Updated on 2025/10/23

写真a

 
SHIOTA Tadashi
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Associate Professor
Position
Associate Professor
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Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Machine elements and tribology

  • Nanotechnology/Materials / Thin film/surface and interfacial physical properties

  • Nanotechnology/Materials / Structural materials and functional materials

Education

  • Osaka University   大学院工学研究科   物質・生命工学専攻

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    Notes： 博士後期課程

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Research History

  • Okayama University   The Graduate School of Natural Science and Technology   Associate Professor

    2018.4

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  • Tokyo Institute of Technology   School of Materials and Chemical Technology   Assistant Professor

    2016.4 - 2018.3

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  • Leiden University   カマリン・オンネス研究所

    2010.3 - 2010.8

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  • Tokyo Institute of Technology   Graduate School of Science and Engineering   Assistant Professor

    2007.4 - 2016.3

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  • Universiteit Leiden   Kamerlingh Onnes Laboratorium   Visiting researcher

    2005.2 - 2006.3

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  • Tokyo Institute of Technology   Graduate School of Science and Engineering   Research Assistant

    2001.10 - 2007.3

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  • 科学技術振興事業団   科学技術特別研究員

    2001.1 - 2001.9

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  • 工業技術院 機械技術研究所   特別技術補助職員

    2000.4 - 2000.12

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Professional Memberships

 

Papers

  • Preparation of (La1 − xSrx)MnO3 − δ thin films on Si (100) substrates by a metal-organic decomposition method for smart radiation devices

    Tadashi Shiota, Yuko Mori, Jun Sugiyama, Osamu Sakurai, Akio Nishiyama, Naoki Wakiya, Sumitaka Tachikawa, Kazuo Shinozaki

    Thin Solid Films   626   154 - 158   2017.3

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier B.V.  

    DOI： 10.1016/j.tsf.2017.02.037

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  • Photon Emission Induced by Fracture of Hard Brittle Materials

    SHIOTA Tadashi, YASUDA Kouichi

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   61 ( 8 )   531 - 538   2016

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    Language：Japanese   Publisher：Japanese Society of Tribologists  

    DOI： 10.18914/tribologist.61.8_531

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  • Thermal radiative properties of (La<inf>1 - x</inf>Sr<inf>x</inf>)MnO<inf>3 - δ</inf> thin films fabricated on yttria-stabilized zirconia single-crystal substrate by pulsed laser deposition Reviewed

    Tadashi Shiota, Kenichi Sato, Jeffrey S. Cross, Naoki Wakiya, Sumitaka Tachikawa, Akira Ohnishi, Osamu Sakurai, Kazuo Shinozaki

    Thin Solid Films   593   1 - 4   2015.10

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.tsf.2015.09.027

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  • A fracture analysis of gadolinium-doped cerla ceramics to improve strength and reliability

    Kouichi Yasuda, Kazuhiro Uemura, Tadashi Shiota

    Ceramic Transactions   230   255 - 263   2012

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：American Ceramic Society  

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  • Theoretical Estimation of Changes in Plane Elastic Waves due to Cylindrical Inclusions Reviewed

    Ryoichi Furushima, Yohtaro Matsuo, Tadashi Shiota, Kouichi Yasuda

    JOURNAL OF NONDESTRUCTIVE EVALUATION   30 ( 1 )   29 - 40   2011.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s10921-010-0087-z

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  • Grain motion statistics of polycrystalline zirconia during superplastic deformation Reviewed

    Taku Okamoto, Kouichi Yasuda, Tadashi Shiota

    SCRIPTA MATERIALIA   64 ( 3 )   253 - 255   2011.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.scriptamat.2010.10.011

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  • Detection of photon emission during crack propagation in silica glass by fast time-resolved measurement Reviewed

    Yoshitaka Sato, Tadashi Shiota, Kouichi Yasuda

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   77 ( 779 )   1028 - 1031   2011

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    Language：Japanese   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1299/kikaia.77.1028

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  • Analysis of Fracture Causes in Gadolinia-Doped Ceria Ceramics

    UEMURA Kazuhiro, YASUDA Kouichi, SHIOTA Tadashi

    Transactions of the Japan Society of Mechanical Engineers Series B   77 ( 775 )   535 - 543   2011

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    Publisher：The Japan Society of Mechanical Engineers  

    The aim of this study is to determine fracture causes of GDC ceramics. GDC ceramics were prepared by sintering Ce0.9Gd0.1O2 powder compacts at 1200, 1300, 1400°C for 2 hours in air. To discuss the effect of doping Gd2O3, pure CeO2 ceramics were also made by sintering at 1300°C. The GDC and CeO2 ceramics were cut into specimens of 3×4 ×36 mm3 and the fracture strength was measured by four-point bending test. After the test, fracture origins of the GDC and CeO2 ceramics were identified by SEM fractography. The experimental results suggest that bending strength of GDC was mainly controlled by large pore generated by nonstoichiometry of ceria.

    DOI： 10.1299/kikaia.77.535

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  • Estimation theory for random force exerted on grains during superplastic deformation of ceramics Reviewed

    T. Okamoto, K. Yasuda, T. Shiota

    3RD INTERNATIONAL CONGRESS ON CERAMICS (ICC3): ADVANCED ENGINEERING CERAMICS AND COMPOSITES   18   2011

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1088/1757-899X/18/20/202007

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  • Simultaneous measurement of the emission of photons and charged particles during fracture of brittle materials Reviewed

    Tadashi Shiota, Kouichi Yasuda

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   173 ( 1-3 )   248 - 252   2010.10

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.mseb.2010.02.002

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  • TZPセラミックスの超塑性変形における粒子流跡線のブラウン運動に基づく解析

    岡本 拓, 安田公一, 塩田 忠

    日本機械学会論文集A編   76 ( 766 )   680 - 681   2010

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  • S0403-1-2 Theory to estimate random force acting on grains in ceramics superplasticity

    OKAMOTO Taku, YASUDA Kouichi, SHIOTA Tadashi

    The proceedings of the JSME annual meeting   2010   289 - 290   2010

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    A motion equation of a Brownian particle is expressed by Generalized Langevin Equation (GLE) which is a stochastic differential equation, and random force in GLE causes zigzag (random walk) motion of the particle. In this study, grain motion during superplastic deformation of ceramics is assumed to be Brownian motion, and random force acting on grains is estimated by solving GLE. From the theoretical approach, we can estimate an auto-correlation function of random force, and also a probability density function of grain motion.

    DOI： 10.1299/jsmemecjo.2010.1.0_289

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  • S0403-1-3 Application of fractography to estimation of strength of porous alumina

    MISAKI Tomoyuki, KOBAYASHI Tomohiro, UEMURA Kazuhiro, SHIOTA Tadashi, NAKA Hironori, OONISHI Hiroshi, YASUDA Kouichi

    The proceedings of the JSME annual meeting   2010   291 - 292   2010

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    The fracture strength of porous ceramics has been studied by many researchers. However, there are few approach on determining fracture mechanism. While fractgraphy is often used to estimate fracture mechanism of dense ceramics. So, in this study, fractography is applied to detect fracture origin of porous ceramics. Porous alumina ceramics (with different porosities 12, 22, 28%) were used. The alumina ceramics were cut into specimens of 5 x 8 x 48 mm, and divided into two groups; polished specimens and as-received specimens. Fracture strengths were measured by 3-point bending test. After the test, fracture origins were identified by optical fractography, and classified into 3 types of defect: inner, surface and edge defects. From the results, we concluded that fractography was the useful technique to understand the fracture mechanism of porous ceramics.

    DOI： 10.1299/jsmemecjo.2010.1.0_291

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  • Estimation of the number of cracks generated by compressive stress in polycrystalline graphite using ultrasonic method Reviewed

    R. Furushima, Y. Matsuo, T. Shiota, J. S. Cross, K. Yasuda

    Journal of Physics: Conference Series   191   2009

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/191/1/012029

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  • Photon emission during fracture of carbon materials

    Kouichi Yasuda, Koji Yamamoto, Tadashi Shiota, Yohtaro Matsuo

    Journal of Vacuum Science and Technology A   27 ( 2 )   187   2009

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  • Asymptotic Characteristic of Exact Distribution of Fracture Strength Based on Gamma Distribution as Initial Flaw Size Distribution

    Chisato WAKABAYASHI, Kouichi YASUDA, Tadashi SHIOTA

    Journal of Solid Mechanics and Materials Engineering   3 ( 2 )   106 - 113   2009

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    Language：English   Publisher：The Japan Society of Mechanical Engineers  

    In this paper, an exact distribution of fracture strength was derived from extreme value statistics for an initial distribution of flaw size, via conversion to an exact distribution of largest flaw size. Gamma distribution was shown as a better function to approximate the initial distribution data measured by immersion liquid technique. The exact distribution of fracture strength was obtained as a function of the number of links in the weakest link theory. With increasing the number of links, the exact distribution gradually became linear on Weibull plot, and almost coincided to Weibull distribution at the number of links larger than 1000. Compared to actual distributions of fracture strength, the number of links in the specimens was estimated to be in the range from 104 to 105. The above discussion showed a verification of this theory.

    DOI： 10.1299/jmmp.3.106

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  • Availability of gamma distribution as initial distribution of flaw size

    Chisato Wakabayashi, Kouichi Yasuda, Tadashi Shiota

    Journal of the Ceramic Society of Japan   117 ( 1362 )   162 - 165   2009

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Ceramic Society of Japan  

    DOI： 10.2109/jcersj2.117.162

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  • S0405-1-1 New estimation method of Weibull parameters based on initial distribution of flaw size

    WAKABAYASHI Chisato, YASUDA Kouichi, SHIOTA Tadashi

    The proceedings of the JSME annual meeting   2009   305 - 306   2009

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    In this paper, gamma distribution is used as the initial distribution of flaw size, and their parameters are estimated from the flaw size data reported previously. Based on extreme value statistics, an exact distribution of the largest flaw size is derived from the initial distribution of flaw size. This distribution is equal to the distribution of fracture origin size. Since the relation between the fracture origin size and the fracture strength is given by fracture mechanics, an exact distribution of fracture strength is derived from the distribution of the largest flaw size by variable transformation. From the fact that the number of links in the specimens is in the range from 10^4 to 10^6, the parameters of Weibull distribution are obtained from the parameters of the initial distribution of flaw size. Thus, a new estimation method of Weibull parameters is proposed here.

    DOI： 10.1299/jsmemecjo.2009.1.0_305

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  • S0405-1-2 New Evaluation Method for Damage Evolution in Porous Ceramics Based on Nonlinearity in Stress/Strain Curve

    YASUDA Kouichi, FURUSHIMA Ryoichi, ZHANG Rui, SHIOTA Tadashi, MATSUO Yohtaro

    The proceedings of the JSME annual meeting   2009   307 - 308   2009

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    This paper describes a new proposal to evaluate damage evolution in porous ceramics according to the present authors' theory. The theory is based on parallel elements model and gives that the second order derivative of a stress/strain curve is proportional to a probability density function of strain at which each element is damaged. Uni-axial compression test was conducted for an insulating brick and its probability density function is obtained from the non-linear stress/strain curve. The function coincides well with acoustic emission data simultaneously measured in the compression test. This fact shows that the theory is useful for quick and brief estimation of damage initiation and its evolution in porous ceramics.

    DOI： 10.1299/jsmemecjo.2009.1.0_307

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  • Estimation of Weibull parameters from parameters of initial distribution of flaw size Reviewed

    C. Wakabayashi, K. Yasuda, T. Shiota

    Journal of Physics: Conference Series   191   2009

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/191/1/012006

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  • Random walk analysis of grain motion during superplastic deformation of TZP Reviewed

    T. Okamoto, K. Yasuda, T. Shiota

    Journal of Physics: Conference Series   191   2009

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/191/1/012004

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  • Detection of damage initiation and its evolution in insulating brick from non-linearity of stress/strain curve Reviewed

    R. Zhang, K. Yasuda, R. Furushima, T. Shiota

    Journal of Physics: Conference Series   191   2009

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/191/1/012005

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  • Influence of beta-tricalcium phosphate dispersion on mechanical properties of hydroxyapatite ceramics

    Tadashi Shiota, Mitsuhiro Shibata, Kottichi Yasuda, Yohtaro Matsuo

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   116 ( 1357 )   1002 - 1005   2008.9

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    DOI： 10.2109/jcersj2.116.1002

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  • Mechanical properties of Pt monatomic chains

    T. Shiota, A. I. Mares, A. M. C. Valkering, T. H. Oosterkamp, J. M. van Ruitenbeek

    PHYSICAL REVIEW B   77 ( 12 )   125411   2008.3

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    DOI： 10.1103/PhysRevB.77.125411

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  • Correlation between the flexure strength and the photon emission intensity during fracture on single crystal and polycrystalline MgO Reviewed

    Tadashi Shiota, Kouichi Yasuda, Yohtaro Matsuo

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   148 ( 1-3 )   230 - 233   2008.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.mseb.2007.09.022

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  • Dependence of the particle emission during the fracture of silica glass on its mechanical property Reviewed

    Tadashi Shiota, Kouichi Yasuda, Yohtaro Matsuo

    PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY   100   2008

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1088/1742-6596/100/7/072041

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  • Estimation of the Maximum Flaw Size and the Fracture Strength Distributions of a Macroscopic Body Taking the Local Flaw-Size Data as an Initial Distribution

    WAKABAYASHI Chisato, MATSUO Yohtaro, YASUDA Kouichi, SHIOTA Tadashi

    Transactions of the Japan Society of Mechanical Engineers Series B   74 ( 737 )   162 - 165   2008

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    In this work a new theory for estimating the maximum flaw-size distribution and the fracture strength distribution of a macroscopic ceramic body is presented, without using any fracture data except the fracture toughness. First, Gamma function was selected as the most suitable distribution function for flaw-size. The unknown parameters were estimated using the local flaw-size data obtained by Yao et al. (5) , who used a small thin ceramic specimen. The maximum flaw-size distribution function for a macroscopic ceramic body, which has an arbitrary volume, was derived based on the extreme statistics by taking the local flaw-size data as an initial distribution. Finally, the strength distribution function was derived using fracture mechanics. The validity of this theory was examined by comparing the Weibull parameters estimated from the theory with the experimental ones by Yao et al.

    DOI： 10.1299/kikaia.74.162

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    Other Link： https://jlc.jst.go.jp/DN/JALC/00307955003?from=CiNii

  • Kinematical Analysis of 748 Grains in TZP Ceramics during Superplastic Deformation

    Kouichi Yasuda, Taku Okamoto, Tadashi Shiota, Yohtaro Matsuo

    Journal of Solid Mechanics and Materials Engineering   2 ( 12 )   1497 - 1507   2008

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    This paper describes motion of 748 grains during superplastic deformation of TZP (Tetragonal Zirconia Polycrystal) ceramics. In the same way as the latest paper of the present authors, the same TZP specimen was 4 times further deformed at 1673K (=1400°C) in air under tensile loading. The increment of true plastic strain was set to be about 2%, and the final true plastic strain reached 25.3%. After each deformation, a position vector of the same grain was read out from a FE-SEM photograph, and thereby its displacement vector was determined. By changing the increment of true plastic strain in calculation, various displacement vector maps were obtained in consideration of the previous data also. At an increment of about 25% of true plastic strain; most of the grains seem to move along stationary streamlines similar to laminar flow. When we look at the grain motion at increments of about 5%, several tens of grains move to the same direction instantaneously, and therefore a kind of domain is formed at the first loading. In a subsequent deformation, however, the domains gradually disappear and each grain seems to move randomly, indicating that grain motion becomes spatially uniform. At increments of about 2%, convergence and divergence in grain motion gradually diminish with increasing the true plastic strain and this tendency corresponds to the observation at increments of about 5%, although each grain moves in a zigzag way gradually turning to the loading direction. From these results, the grain motion has a similarity to diffusion phenomenon because the observed time period makes a profound effect on the motion. As for time evolution of grain structure, by the first 15% of true plastic strain, local deformation resistance (viz. constraint by neighbor grains) is gradually homogenized, and consequently spatially uniform grain motion is attained leading to superplasticity in TZP ceramics.

    DOI： 10.1299/jmmp.2.1497

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  • Bending Strength Dependence of Fractoluminescence Intensity in Silica Glass, Single Crystal and Polycrystalline MgO

    Shiota Tadashi, Yasuda Kouichi, Matsuo Yohtaro

    Tribology Online   3 ( 5 )   264 - 267   2008

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    Language：English   Publisher：Japanese Society of Tribologists  

    Fractoluminescence (FL) intensity and bending strength were simultaneously measured in silica glass, single crystal and polycrystalline MgO to study dependence of the FL on mechanical properties. In the silica glass, the FL intensity was positively correlated with the bending strength. Also, the positive correlation was found in the single crystal MgO. However, there was not clear dependence in the polycrystalline MgO. This suggests that the FL intensity is connected with the energy released by fracture in glasses and single crystal ceramics, and that grain boundary also contributes to the FL in polycrystalline ceramics.

    DOI： 10.2474/trol.3.264

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  • 1441 Elastic Analysis around an Arbitrary-shaped Inclusion with Interlayer

    TEMMYO Kan, YASUDA Kouichi, SHIOTA Tadashi, Matsuo Yohtaro

    The proceedings of the JSME annual meeting   2008   289 - 290   2008

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    This study deals with stress analysis for an arbitrary-shaped inclusion with interlayer under out-of-plane shear loading. The elastic analytical solution is derived by the two-dimensional elastic-theory in complex number expression. Here, boundaries of the arbitrary-shaped inclusion and interlayer in physical plane are mapped into concentric circles in mapping plane by conformal mapping. And the stress function in mapping plane is given by analytical continuation. Using this stress function, stress distribution around the inclusion in physical plane are shown by numerical simulation as several examples.

    DOI： 10.1299/jsmemecjo.2008.1.0_289

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  • 1444 Influence of the flaw-size distribution's parameter on the fracture strength in ceramics

    WAKABAYASHI Chisato, MATSUO Yohtaro, YASUDA Kouichi, SHIOTA Tadashi

    The proceedings of the JSME annual meeting   2008   295 - 296   2008

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    In this report, gamma distribution is used for flaw size distribution, and their parameters are estimated by the most likelihood method by using the flaw size data reported by Nakamura et.al. Taking the logarithms of its probability density function, a term in proportion to the flaw size is several orders of magnitude larger than the other terms. Therefore, linearization of flaw size distribution can be made by neglecting the other terms. To compare the experimental data, the gamma distribution parameters are used for the linearization, so this parameter expresses the character of flaw size distribution well. To consider about the relation between the fracture strength and flaw size distribution, the fracture strength and the shape parameter of gamma distribution are discussed.

    DOI： 10.1299/jsmemecjo.2008.1.0_295

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  • Damage evaluation of refractories under cyclic loading-unloading processes using ultrasonic method

    Ryoichi Furushima, Yohtaro Matsuo, Tadashi Shiota, Kouichi Yasuda

    JOURNAL OF MATERIALS SCIENCE   42 ( 20 )   8652 - 8661   2007.10

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    DOI： 10.1007/s10853-007-1828-y

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  • Photoinduced surface roughness variation in polycrystalline TiO2 thin films under different atmospheres

    Naoki Arimitsu, Akira Nakajima, Ken-Ichi Katsumata, Tadashi Shiota, Toshiya Watanabe, Naoya Yoshida, Yoshikazu Karneshima, Kiyoshi Okada

    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY   190 ( 1 )   53 - 57   2007.7

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    DOI： 10.1016/j.jphotochem.2007.03.013

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  • Evaluation of damage for alumina/graphite refractory using apparent sonic velocity measurement Reviewed

    Ryoichi Furushima, Yohtaro Matsuo, Tadashi Shiota, Kouichi Yasuda

    INNOVATION IN CERAMICS SCIENCE AND ENGINEERING   352   31 - +   2007

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.4028/www.scientific.net/KEM.352.31

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  • The role of strength, fracture cause, and fracture location data on the reliability analysis of ceramics Reviewed

    Yohtaro Matsuo, Tadashi Shiota, Kouichi Yasuda, Kazuyuki Suzuki

    INNOVATION IN CERAMICS SCIENCE AND ENGINEERING   352   17 - +   2007

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  • OPTICAL MICROSCOPY OF MULTIPLE MATRIX CRACKING IN A CARBON FIBER-REINFORCED GLASS MATRIX COMPOSITE Reviewed

    Kouichi Yasuda, Koji Hashimoto, Tadashi Shiota, Yohtaro Matsuo

    FRACTOGRAPHY OF GLASSES AND CERAMICS V   199   93 - 103   2007

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  • Recombinant domain movement mechanism in superplastic deformation of TZP ceramics

    Kouichi Yasuda, Taku Okamoto, Tadashi Shiota, Yohtaro Matsuo

    Materials Science and Engineering A   418 ( 1-2 )   115 - 119   2006.2

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    DOI： 10.1016/j.msea.2005.11.034

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  • Gas pressure dependence of photon emission accompanying fracture of polycrystalline MgO in nitrogen

    Tadashi Shiota, Yasuo Toyoshima, Kouichi Yasuda, Yohtaro Matsuo

    SCIENCE OF ENGINEERING CERAMICS III   317-318   313 - 316   2006

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  • Measurement of Displacement Vector of Grains in Polycrystalline ZrO2 during High-temperature Deformation

    Taku Okamoto, Kouichi Yasuda, Tadashi Shiota, Yohtaro Matsuo

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   72 ( 719 )   1080 - 1087   2006

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1299/kikaia.72.1080

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  • Effect of microstructure on photoinduced hydrophilicity of transparent anatase thin films

    Ken-Ichi Katsumata, Akira Nakajima, Hidemi Yoshikawa, Tadashi Shiota, Naoya Yoshida, Toshiya Watanabe, Yoshikazu Kameshima, Kiyoshi Okada

    Surface Science   579 ( 2-3 )   123 - 130   2005.4

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    DOI： 10.1016/j.susc.2005.01.035

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  • 2319 Theory of the Total Dissipation Energy Accompanying Fracture of Fiber-reinforced Ceramics Composites

    YASUDA Kouichi, MATSUO Yohtaro, SHIOTA Tadashi

    The proceedings of the JSME annual meeting   2005   699 - 700   2005

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    The total dissipation energy accompanying fracture of fiber-reinforced ceramics composites was formulated based on energetics of microfracture processes (viz. interfacial debonding and fiber pullout processes) and also Oh and Finnie's fracture location theory. The theory shows us the total dissipation energy of the composites strongly depends on the shape and scale parameters of Weibull distribution of fiber strength and also fiber/matrix interfacial frictional stress. The theoretical prediction gives a close approximation of the experimental fracture energy values of a C/C composite heat-treated at different temperatures.

    DOI： 10.1299/jsmemecjo.2005.1.0_699

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  • 2325 Strength Distribution Function of Ceramics after Surface Strengthening and Non-destructive Inspection

    MATSUO Yohtaro, SHIOTA Tadashi, YASUDA Kouichi

    The proceedings of the JSME annual meeting   2005   711 - 712   2005

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    A statistical theory of strength for surface strengthened ceramics is proposed based on the fracture statistics and the theory of non-destructive inspection developed by the authors in the previous papers. The strength distribution function of ceramics after surface strengthening was proposed. It was found that there is one-to-one correspondence between surface strengthening and realistic non-destructive inspection if some conditions are fulfilled. A reliability design for surface strengthened ceramics is presented.

    DOI： 10.1299/jsmemecjo.2005.1.0_711

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  • The surface potential of the Si nanostructure on a Si (1 1 1) 7 × 7 surface generated by contact of a cantilever tip

    T. Shiota, K. Nakayama

    Applied Surface Science   202 ( 3-4 )   218 - 222   2002.12

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    DOI： 10.1016/S0169-4332(02)00926-1

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  • Atom-resolved imaging of the potential distribution at Si (111) 7 x 7 surfaces

    T Shiota, K Nakayama

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS   41 ( 10B )   L1178 - L1180   2002.10

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    DOI： 10.1143/JJAP.41.L1178

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  • Computational study of the effect of surface defects and steps on field-stimulated exoelectron emission from aluminum

    T Shiota, M Morita, M Umeno, N Shima, M Tagawa, N Ohmae

    PHYSICAL REVIEW B   65 ( 16 )   165430 - 165433   2002.4

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    DOI： 10.1103/PhysRevB.65.165430

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  • Direct observation of the field-stimulated exoemission sites at tungsten surfaces using field ion microscopy

    T Shiota, M Umeno, K Dohkuni, M Tagawa, N Ohmae

    JOURNAL OF APPLIED PHYSICS   89 ( 9 )   5177 - 5182   2001.5

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    DOI： 10.1063/1.1359421

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  • The effect of an electrostatic force on imageing a surface topography by noncontact atomic force microscope

    T. Shiota, K. Nakayama

    Japanese Journal of Applied Physics Part2   40 ( 9A/B )   L986 - L988   2001

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    Language：English   Publisher：The Japan Society of Applied Physics  

    Noncontact atomic force microscope (NC-AFM) with and without scanning Kelvin probe force microscope (SKPM) has been studied to clarify the effect of an electrostatic force between a cantilever tip and a specimen on the NC-AFM imaging. The NC-AFM image contrast of a quenched Si (111) surface reflected the distribution of the surface potential, while that observed with a feedback of the SKPM signal showed good agreements with the previous results. The experimental results show that the electrostatic force affects the NC-AFM image formation, so that the electrostatic effect must be compensated to obtain an actual surface topography by NC-AFM.

    DOI： 10.1143/JJAP.40.L986

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  • Effect of low-energy ion bombardment upon field-stimulated exoelectron emission from tungsten surfaces

    T Shiota, S Kibi, R Yamamoto, M Tagawa, N Ohmae, M Umeno

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS   39 ( 2A )   L110 - L112   2000.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1143/jjap.39.L110

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  • First-principles calculational study of the exoelectron emission of oxygen-adsorbed aluminum surfaces

    T. Shiota, M. Morita, M. Umeno

    Physical Review B - Condensed Matter and Materials Physics   60 ( 23 )   16114 - 16119   1999

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevB.60.16114

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MISC

  • A Discussion of Micro Leakage Mechanism Based on Microscopic Observation of Metal Flat Gasket Surface

    林大雅, 大宮祐也, 塩田忠, 藤井正浩

    日本トライボロジー学会トライボロジー会議予稿集(CD-ROM)   2021   2021

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  • Influence of Surface Roughness on Behavior of Angle Control Tightening

    玄馬之善, 大竹遼平, 両角由貴夫, 大宮祐也, 塩田忠, 藤井正浩

    日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)   59th   2021

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  • Modeling of Damage Process for Alumina/Graphite Refractory under Uni-Axial Compressive Loading

    FURUSHIMA Ryoichi, MATSUO Yohtaro, SHIOTA Tadashi, YASUDA Kouichi

    59 ( 3 )   139 - 139   2007.3

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  • Theory of NDI for Brittle Materials and Its Application to Surface Strengthening

    MATSUO YOHTARO, SHIOTA TADASHI, YASUDA KOUICHI

    26 ( 3 )   246 - 246   2006.9

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  • Theory of NDI for Brittle Materials and its Application to Surface Strengthening

    MATSUO Yohtaro, SHIOTA Tadashi, YASUDA Kouichi

    58 ( 3 )   167 - 167   2006.3

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  • Densification Process of Powder Compaction by Cyclic CIP

    Kouichi Yasuda Tadashi Kitamura Yohtaro, Matsuo, Tadashi Shiota

    Proceedings of Materials Science and Technology 2006:PROCESSING   495 - 506   2006

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  • 繊維強化セラミックスのワーク・オブ・フラクチャーに関する理論解析

    安田公一, 松尾陽太郎, 塩田忠

    日本セラミックス協会2004年年会講演予稿集   248   2004

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  • 等方性黒鉛の強度のばらつきおよび破壊歪におよぼす応力比の影響

    松尾陽太郎, 山本浩司, 塩田忠, 安田公一

    日本セラミックス協会2004年年会講演予稿集   248   2004

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  • 超音波パルスエコー法による等方性黒鉛の機械的損傷評価

    古嶋亮一, 松尾陽太郎, 塩田忠, 安田公一

    日本セラミックス協会2004年年会講演予稿集   249   2004

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  • 炭素繊維/フラン樹脂系炭素複合材料のmodal work-of-fractureの熱処理温度依存性

    乾浩敏, 安田公一, 塩田忠, 松尾陽太郎

    第42回セラミックス基礎科学討論会講演要旨集   46   2004

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  • 多結晶MgOの破壊に伴うフラクトルミネッセンスの雰囲気依存性

    塩田忠, 豊島康夫, 安田公一, 松尾陽太郎

    日本セラミックス協会2004年年会講演予稿集   247   2004

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  • 炭素繊維/フラン樹脂系炭素複合材料の引張り破壊モードのwork-of-fractureの熱処理温度の影響

    乾浩敏, 安田公一, 塩田忠, 松尾陽太郎

    日本セラミックス協会第17回秋季シンポジウム講演予稿集   119   2004

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  • MgOの破壊に伴うフォトンエミッションに及ぼす粒径の影響

    塩田忠, 豊島康夫, 安田公一, 松尾陽太郎

    日本セラミックス協会第17回秋季シンポジウム講演予稿集   197   2004

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  • 粒子分散複合材料の負荷・除荷過程における音速変化

    古嶋亮一, 松尾陽太郎, 塩田忠, 安田公一

    日本セラミックス協会第17回秋季シンポジウム講演予稿集   206   2004

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  • ワイブル係数の応力比依存性に関する理論的考察

    松尾陽太郎, 塩田忠, 安田公一

    日本セラミックス協会第17回秋季シンポジウム講演予稿集   206   2004

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  • Evaluation of dissipation energies during debonding and fiber-pullout proceese of a C/C composite

    Kouichi Yasuda Takanori, Tadashi Shiota, Shiota Yohtaro Matsuo

    Proceedings of the 20th International Japan-Korea Seminar on Ceramics   367 - 370   2003

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  • In situ observation of damage process of alumina-carbon refractories subjected to compressive stress using ultrasonic pulse-echo method

    Yohtaro Matsuo, Takuma, Yohtaro Matsuo; Takuma Okajima; Tadashi Shiota; Kouichi Yasuda, Tadashi Shiota

    Proceedings of the 22nd forum on basic science of high-temperature ceramics   15   2003

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  • 熱的・機械的損傷を受けたぜい性材料の超音波パルスエコー法による評価

    松尾陽太郎, 岡島琢磨, 塩田忠, 安田公一

    日本機会学会第１１回機械材料・材料加工技術講演会講演論文集   03 ( 32 )   161 - 162   2003

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  • Evaluation of thermal shock induced and mechanically induced damages of heterogeneous brittle materials by means of ultrasonic pulse echo method

    Yohtaro Matsuo, Takuma, Yohtaro Matsuo; Takuma Okajima; Tadashi Shiota; Kouichi Yasuda, Tadashi Shiota

    Abstract of the 8th IUMRS international conference on advanced materials   240   2003

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  • Evaluation of dissipation energies during debonding and fiber-pullout proceese of a C/C composite

    Kouichi Yasuda Takanori, Tadashi Shiota, Shiota Yohtaro Matsuo

    Proceedings of the 20th International Japan-Korea Seminar on Ceramics   367 - 370   2003

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  • In situ observation of damage process of alumina-carbon refractories subjected to compressive stress using ultrasonic pulse-echo method

    Yohtaro Matsuo, Takuma, Yohtaro Matsuo; Takuma Okajima; Tadashi Shiota; Kouichi Yasuda, Tadashi Shiota

    Proceedings of the 22nd forum on basic science of high-temperature ceramics   15   2003

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  • Analysis of total dissipation energy during debonding and pullout processes in fiber-reinforced composites

    Kouichi Yasuda Yohtaro, Matsuo, Tadashi Shiota

    Abstract Book of the 5th International meeting of Pacific Rim Ceramic societies   106   2003

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  • Evaluation of thermal shock induced and mechanically induced damages of heterogeneous brittle materials by means of ultrasonic pulse echo method

    Yohtaro Matsuo, Takuma, Yohtaro Matsuo; Takuma Okajima; Tadashi Shiota; Kouichi Yasuda, Tadashi Shiota

    Abstract of the 8th IUMRS international conference on advanced materials   240   2003

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  • Photon and electron emissions from the fracture of polycrystalline magnesium oxide in ultra high vacuum

    Tadashi Shiota, Kouichi, Yasuda Yohtaro Matsuo

    Abstract Book of the 5th International meeting of Pacific Rim Ceramic societies   85   2003

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  • Photon and electron emissions from the fracture of polycrystalline magnesium oxide in ultra high vacuum

    Tadashi Shiota, Kouichi, Yasuda Yohtaro Matsuo

    Abstract Book of the 5th International meeting of Pacific Rim Ceramic societies   85   2003

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  • Damage evaluation of brittle materials subjected to thermal and mechanical stresses using ultrasonic pulse-echo method

    03 ( 32 )   161 - 162   2003

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  • Analysis of total dissipation energy during debonding and pullout processes in fiber-reinforced composites

    Kouichi Yasuda Yohtaro, Matsuo, Tadashi Shiota

    Abstract Book of the 5th International meeting of Pacific Rim Ceramic societies   106   2003

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  • Si(111)7×7表面における電位分布像の原子スケール観察

    塩田忠

    第62回応用物理学会学術講演会講演予稿集   505   2001

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  • Si表面における接触・摩擦帯電現象

    塩田忠

    トライボロジー会議2001・春、講演予稿集   257 - 258   2001

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  • 異なる電位を有する表面の非接触AFM観察

    塩田忠

    第48回応用物理学関係連合講演会講演予稿集   684   2001

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  • Si表面におけるスクラッチ損傷面の酸化過程

    塩田忠

    トライボロジー会議2001・秋、講演予稿集   263 - 264   2001

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  • Si/Si接触帯電面の走査型ケルビンプローブ顕微鏡観察

    塩田忠

    第20回表面科学講演大会講演予稿集   76   2000

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  • Si/Si接触帯電のナノスケール計測

    塩田忠

    機械技術研究所内研究発表概要集   5   2000

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  • 第一原理計算によるエキソ電子放射機構の解明

    塩田忠

    トライボロジー会議2000・春、講演予稿集   347 - 348   2000

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  • タングステン表面における電界刺激エキソ電子放射サイトの分布

    塩田忠

    第47回応用物理学関係連合講演会講演予稿集   2000

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  • タングステン表面における表面原子拡散に伴う電界刺激エキソ電子放射現象

    塩田忠

    第1回日本表面科学会関西支部学生セッション講演予稿集   27 - 28   2000

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  • Transient exoelectron emission from a clean tungsten tip at 200-450 K triggered by the surface electric field

    T. Shiota, M. Tagawa, M. Umeno, N. Ohmae

    Journal of Applied Physics   85 ( 9 )   6811 - 6815   1999.5

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    Language：English   Publisher：American Institute of Physics Inc.  

    DOI： 10.1063/1.370198

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  • First-principles calculational study of the exoelectron emission of oxygen-adsorbed aluminum surfaes

    T. Shiota, M. Morita M, Umeno, M. Tagawa, N. Ohmae, N. Shima

    Physical Review B   60 ( 23 )   16114 - 16119   1999

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  • 第一原理計算を用いたAl酸素吸着表面からのエキソ電子放射機構の解明

    塩田忠

    第46回応用物理学関係連合講演会講演予稿集   719   1999

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  • Origin of the field-stimulated exoelectron emission from tungsten tip surfaces

    T Shiota, M Morita, M Tagawa, N Ohmae, M Umeno

    ULTRAMICROSCOPY   73 ( 1-4 )   217 - 221   1998.6

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  • エキソ電子放射メカニズム解明のための理論的アプローチ

    塩田忠

    大阪大学大型計算機センターNews   28 ( 3 )   7 - 11   1998

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  • 水素吸着タングステン表面におけるFSEEの温度依存性

    塩田忠

    第59回応用物理学会学術講演会講演予稿集   570   1998

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  • W表面からのエキソ電子放射－清浄表面でFSEEは生じるか－

    塩田忠

    トライボロジー会議1997・春、講演予稿集   1997

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  • タングステン表面における水素吸着がFSEEに及ぼす影響

    塩田忠

    第58回応用物理学会学術講演会講演予稿集   1997

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  • W清浄表面に形成されるエキソ電子放射サイト

    塩田忠

    第44回応用物理学関係連合講演会講演予稿集   1997

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  • 電界刺激エキソ電子放射の放射モデル

    塩田忠

    第57回応用物理学会学術講演会講演予稿集   1996

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Presentations

  • 水潤滑下におけるステンレス基材上の酸化物コーティング膜のトライボロジー特性

    塩見公,塩田忠,大宮祐也,藤井正浩

    日本設計工学会中国支部2020年度研究発表講演会 

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    Event date： 2020.6.6

    Language：Japanese  

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  • 表面テクスチャリングが接着継ぎ手強度に与える影響

    豊田健二,大宮祐也,中西亮太,塩田忠,藤井正浩

    日本機械学会中四国支部第58期総会・講演会 

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    Event date： 2020.3.6

    Language：Japanese  

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  • レーザピーニングが浸炭硬化鋼の転動疲労寿命に及ぼす影響 International conference

    影山大恩,河渕紗英子,塩田忠,大宮祐也,藤井正浩

    日本機械学会中四国支部第58期総会・講演会 

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    Event date： 2020.3.6

    Language：Japanese  

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  • ボルト軸力にばらつきを有する管フランジ締結体の漏えい特性

    朱万玉,大宮祐也,藤井正浩,塩田忠

    日本機械学会中四国支部第58期総会・講演会 

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    Event date： 2020.3.6

    Language：Japanese  

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  • 炭化ケイ素の水潤滑しゅう動における低摩擦状態の発現に及ぼす摩擦帯電の影響

    肖佳シン,塩田忠,大宮祐也,藤井正浩

    日本機械学会中四国支部第58期総会・講演会 

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    Event date： 2020.3.6

    Language：Japanese  

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  • ねじ締結速度がグリース潤滑されたねじ面の損傷に及ぼす影響

    川口隼己,大宮祐也,藤井正浩.塩田忠

    日本機械学会中四国支部第58期総会・講演会 

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    Event date： 2020.3.6

    Language：Japanese  

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  • Al2O3−ZrO2系セラミックスの高温トライボロジー特性

    岡本京介,塩田忠,大宮祐也,藤井正浩

    第26回ヤングセラミストミーティング in 中四国 

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    Event date： 2019.12.7

    Language：Japanese   Presentation type：Poster presentation  

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  • アルミナ基板上へのSiC薄膜合成とその機械特性評価

    谷家大樹,秋山美穂,竹中優加,塩田忠,大宮祐也,藤井正浩

    第26回ヤングセラミストミーティング in 中四国 

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    Event date： 2019.12.7

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  • Resistive switching in Y2O3-doped ZrO2 epitaxial thin films International conference

    T. Shiota, K. Futatsumori, R. Shirata, O. Sakurai, K. Shinozaki

    TACT2019 International Thin Films Conference 

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    Event date： 2019.11.17 - 2019.11.20

    Language：English   Presentation type：Poster presentation  

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  • Mechanical Properties of Amorphous SiC thin films on Al2O3 Ceramic Substrates International conference

    T. Shiota, D. Taniya, M. Okiyama, Y. Takenaka, Y. Omiya, T. Ikoma, M. Fujii

    The 13th Pacific Rim Conference of Ceramic Societies 

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    Event date： 2019.10.27 - 2019.11.1

    Language：English   Presentation type：Poster presentation  

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  • Tribological behavior of silicon carbide coating films for ceramic-on-ceramic artificial joints International conference

    T. Shiota, M. Akiyama, D. Taniya, Y. Omiya, T. Ikoma, M. Fujii

    The 8th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date： 2019.4.24 - 2019.4.27

    Language：English   Presentation type：Oral presentation (general)  

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  • Influence of tightening speed on rapture of screw threads International conference

    Y. Omiya, H. Kawaguchi, T. Shiota, M. Fujii

    The 8th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date： 2019.4.24 - 2019.4.27

    Language：English   Presentation type：Oral presentation (general)  

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  • PVD法による炭化物薄膜の合成と機械的応用

    塩田忠

    日本材料学会中国支部材料研究交流会 

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    Event date： 2019.3.26

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • 面接触摺動下における木材由来カーボン添加グリースのトライボロジー特性

    谷家大樹、大宮祐也、藤井正浩、塩田忠

    日本設計工学会2018年度秋季研究発表講演会 

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    Event date： 2018.9.28 - 2018.9.29

    Language：Japanese   Presentation type：Oral presentation (general)  

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  • PVD法による機能性セラミック薄膜の合成と応用

    塩田 忠

    第69回中国四国機素潤滑設計技術研究会，第67回中国四国支部MD&T研究会 

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    Event date： 2018.7.6

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Al(CH3)3とO2を用いたMOCVD法によるAl2O3製膜に及ぼすH2添加の影響

    林俊甫、西山昭雄、塩田忠、安田公一、篠崎和夫

    日本セラミックス協会2018年年会 

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    Event date： 2018.3.15 - 2018.3.17

    Language：Japanese   Presentation type：Oral presentation (general)  

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  • S042023 Photon Emission Characteristics during Crack Propagation in Glass Materials

    SHIOTA Tadashi, SATO Yoshitaka, YASUDA Kouichi

    Mechanical Engineering Congress, Japan  2011.9.11  The Japan Society of Mechanical Engineers

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    Event date： 2011.9.11

    Language：Japanese  

    2.7eV and 1.9eV photon emissions (PEs) were measured during crack propagation in brittle fracture of silica glass, borosilicate glass and soda-lime glass. In silica glass, an intense 2.7eV-PE was observed at the beginning of the crack propagation, and 1.9eV-PE was detected during the crack propagation. On the other hand, only an intermittent 2.7eV-PE was observed in both of borosilicate glass and soda-lime glass. The difference on the PE characteristics could be related to that on microscopic processes in the crack propagation. This result implies that the PE is a tool to study crack propagation in brittle materials on a microscopic scale.

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  • セラミックスの破壊に伴うフォトンエミッション

    塩田忠

    第48回ガラスおよびフォトニクス材料討論会講演要旨集  2007 

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    Event date： 2007

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  • シリカガラスの破壊の伴う粒子放出特性

    第48回セラミックス基礎科学討論会  2010 

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  • TZPセラミックスの超塑性変形における粒子流跡線の分解

    日本セラミックス協会2010年年会講演予稿集  2010 

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  • チョークの不思議な壊れ方

    日本セラミックス協会2010年年会講演予稿集  2010 

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  • ガドリニアドープセリアセラミックスの破壊源の同定

    日本セラミックス協会2010年年会講演予稿集  2010 

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  • Characteristics of particle emission during fracture of silica glass

    2010 

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  • Decomposition of grain trajectories in TZP ceramics under superplastic deformation

    Abstract Book of Annual Meeting of the Ceramic Society of Japan in 2010  2010 

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  • Wondering shape after breaking of chalk

    Abstract Book of Annual Meeting of the Ceramic Society of Japan in 2010  2010 

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  • Itentification of Fracture Origins in Gadolinia-doped Ceria Ceramics

    Abstract Book of Annual Meeting of the Ceramic Society of Japan in 2010  2010 

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  • 応力／ひずみ曲線の非線形性に基づいた多孔質セラミックスの損傷発展に関する新評価法

    日本機械学会2009年度年次大会講演論文集  2009 

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  • Estimation of Weibull Parameters based on the parameters of the Initial Distribution of Flaw Size

    The international exchange center, Tokyo, Japan  2009 

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  • Evaluation of Damage Evolution of Porous Ceramics based on Nonlinearity in Stress/Strain curve

    Abstract Book of Annual Meeting of the Ceramic Society of Japan in 2009  2009 

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  • Hands-on Learning "Play with Force" for Open Laboratory

    Abstract Book of Annual Meeting of the Ceramic Society of Japan in 2009  2009 

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  • 研究室公開における『力と遊ぼう』体験学習

    日本セラミックス協会2009年年会講演予稿集  2009 

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  • 界面層を有する任意形状介在物問題の弾性解析

    日本セラミックス協会2009年年会講演予稿集  2009 

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  • Random Walk Analysis of Grain motion during Superplastic Deformation of TZP

    The 3rd International Symposium on Atomic Technology and the 3rd Polyscale Technology Workshop  2009 

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  • 炭素材料の破壊におけるフォトンエミッション計測

    日本セラミックス協会2009年年会講演予稿集  2009 

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  • セラミックスの表面形成に伴うミクロ電磁気現象の解明

    2009 

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  • 脆性材料の破壊に伴うルミネッセンス

    2009 

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  • ガドリニアドープセリアセラミックスの破壊源の同定

    日本セラミックス協会2009年年会講演予稿集  2009 

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  • Simultaneous measurement of the emission of photons and charged particles during brittle fracture

    3rd international conference on science and technology for advanced ceramics  2009 

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  • Theoretical Prediction of Work-of-fracture of Carbon/Carbon Composites

    International Conference on Composites or Nano Engineering  2009 

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  • Gas Dischrage Luminescence During Fracture of Ceramic Materials

    Tribochemistry Kyoto 2009  2009 

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  • Random walk analysis of grain motion during superplastic deformation of TZP

    The Third International Symposium on Atomic Technology  2009 

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  • Detection of damage initiation and its evolution in insulating brick from non-linearity of stress/strain curve

    The Third International Symposium on Atomic Technology  2009 

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  • Analysis of Fracture Origin in Gadolinia-Doped Ceria Ceramics

    2009 

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  • Estimation of Damage Evolution of Porous Ceramics by Nonlinearity in Stress-Strain Curve

    The 47th Symposium on Basic Science of Ceramics Abstract Book  2009 

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  • Fractography of Gadolinia-doped Ceria Ceramics

    3rd International Symposium on Atomic Technology and 3rd Polyscale Technology Workshop  2009 

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  • Damage Accumulation of Insulating Brick during Loading/Unloading Cycle estimated from Nonlinearity of Stress/Strain Curve in Compression

    The 3rd International Symposium on Atomic Technology and the 3rd Polyscale Technology Workshop  2009 

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  • High-Temperature Compressive Deformation of Calcium Phosphate Bioceramics

    3rd International Symposium on Atomic Technology and 3rd Polyscale Technology Workshop  2009 

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  • Estimation of the Number of Cracks Generated by Compressive Stress in Polycrystalline Graphite

    3rd International Symposium on Atomic Technology and 3rd Polyscale Technology Workshop  2009 

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  • Estimation of Weibull Parameters based on the parameters of the Initial Distribution of Flaw Size

    The international exchange center, Tokyo, Japan  2009 

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  • 応力／ひずみ曲線の非線形性に基づく多孔質セラミックスの損傷発展の評価

    日本セラミックス協会2009年年会講演予稿集  2009 

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  • Detection of damage initiation and its evolution in insulating brick from non-linearity of stress/strain curve

    The Third International Symposium on Atomic Technology  2009 

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  • ガドリニアドープセリアセラミックスの破面解析

    2009 

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  • 欠陥寸法原分布に基づくワイブルパラメータ新評価法

    日本機械学会2009年度年次大会講演論文集  2009 

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  • 応力／ひずみ曲線の非線形性から見た材料の損傷発展

    日本セラミックス協会第22回秋季シンポジウム講演予稿集  2009 

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  • ガドリニアドープセリアセラミックスの破壊原因の解析

    日本セラミックス協会第22回秋季シンポジウム講演予稿集  2009 

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  • 応力／ひずみ線図の非線形性に基づく損傷評価のための確率モデル

    日本機械学会第17回機械材料・材料加工技術講演会  2009 

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  • ＴＺＰの超塑性変形における粒子流跡線のブラウン運動に基づく解析

    日本機械学会第17回機械材料・材料加工技術講演会  2009 

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  • Estimation of the number of cracks generated by compressive stress in polycrystalline graphite using ultrasonic method

    The Third International Symposium on Atomic Technology  2009 

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  • Estimation of Weibull parameters from parameters of initial distribution of flaw size

    The Third International Symposium on Atomic Technology  2009 

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  • Random walk analysis of grain motion during superplastic deformation of TZP

    The Third International Symposium on Atomic Technology  2009 

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  • Estimation of the Number of Cracks Generated by Compressive Stress in Polycrystalline Graphite

    3rd International Symposium on Atomic Technology and 3rd Polyscale Technology Workshop  2009 

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  • Theoretical Prediction of Work-of-fracture of Carbon/Carbon Composites

    International Conference on Composites or Nano Engineering  2009 

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  • Estimation of Weibull parameters from parameters of initial distribution of flaw size

    The Third International Symposium on Atomic Technology  2009 

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  • Gas Dischrage Luminescence During Fracture of Ceramic Materials

    Tribochemistry Kyoto 2009  2009 

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  • New Evaluation Method for Damage Evolution in Porous Ceramics Based on Nonlinearity in Stress/Strain Curve

    Mechanical Engineering Congess, 2009 Japan  2009 

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  • New Evaluation Method of Weibull Prameters Based on Initial Distribution of Flaw SIze

    Mechanical Engineering Congess, 2009 Japan  2009 

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  • Damage Evolution of Materials from the Aspect of Nonlinearity in Stress/Strain Curve

    The 22nd Fall Meeting of the Ceramic Society of Japan  2009 

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  • Identification of Fracture Origins in Gadolinia-doped Ceria Ceramics

    The 22nd Fall Meeting of the Ceramic Society of Japan  2009 

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  • Statistical Model for Damage Estimation based on Non-linearity of Stress/Strain Curve

    2009 

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  • Statistical analysis of grain trajectories based on Brownian motion during superplastic deformation of TZP

    2009 

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  • Estimation of the number of cracks generated by compressive stress in polycrystalline graphite using ultrasonic method

    The Third International Symposium on Atomic Technology  2009 

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  • Random Walk Analysis of Grain motion during Superplastic Deformation of TZP

    The 3rd International Symposium on Atomic Technology and the 3rd Polyscale Technology Workshop  2009 

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  • Simultaneous measurement of the emission of photons and charged particles during brittle fracture

    3rd international conference on science and technology for advanced ceramics  2009 

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  • Estimation of Damage Evolution of Porous Ceramics by Nonlinearity in Stress-Strain Curve

    The 47th Symposium on Basic Science of Ceramics Abstract Book  2009 

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  • Fractography of Gadolinia-doped Ceria Ceramics

    3rd International Symposium on Atomic Technology and 3rd Polyscale Technology Workshop  2009 

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  • Damage Accumulation of Insulating Brick during Loading/Unloading Cycle estimated from Nonlinearity of Stress/Strain Curve in Compression

    The 3rd International Symposium on Atomic Technology and the 3rd Polyscale Technology Workshop  2009 

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  • High-Temperature Compressive Deformation of Calcium Phosphate Bioceramics

    3rd International Symposium on Atomic Technology and 3rd Polyscale Technology Workshop  2009 

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  • Tilt Angle Dependence of Interfacial Fracture Toughness of <0001> Tilt Boundary of Alumina

    The 2nd International Conference on Science and Technology for Advanced Ceramics (STAC2  2008 

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  • Theoretical analysis on changes in amplitude and phase of elastic incident waves by cylindrical inclusions

    2008 

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  • Bending strength dependence of the photon emission intensity during the fracture of silica glass

    2008 

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  • Nanoscopic distribution of potential and topography on Si (111) surfaces having 1x1 and 7x7 structures with and without scratching

    2008 

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  • Dependence of the particle emission during the fracture of silica glass on its mechanical property

    2008 

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  • Derivation of Distribution Function of Fiber-pullout Length in Unidirectional Fiber-reinforced Composites

    Abustract of Annual Meeting of the Ceramics Society of Japan, 2008  2008 

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  • Theoretical study for the distribution of flaw size at fracture origin of Alumina ceramics under a uniaxial tension

    Abstract of 2008 annual conference of The Ceramics Society of Japan  2008 

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  • Influence of mechanical properties on the fractoluminescence intensity in ceramics and glasses

    2008 

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  • Linearization of Flaw-Size Distribution of Ceramics

    STAC2&STSI  2008 

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  • Correlation between the flexure strength and photo nemission intensity during the fracture of single crystal and polycrystalline MgO

    2008 

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  • Nanoscopic distribution of potential and topography on Si (111) surfaces having 1x1 and 7x7 structures with and without scratching

    2008 

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  • Dependence of the particle emission during the fracture of silica glass on its mechanical property

    2008 

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  • 1方向繊維強化複合材料における繊維の引き抜き長さ分布の導出

    日本セラミックス協会2008年年会  2008 

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  • 一軸引張り応力下におけるアルミナの破壊源欠陥寸法分布に関する理論的考察

    日本セラミックス協会年会2008  2008 

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  • セラミックスおよびガラスにおけるフラクトルミネッセンスの発光強度に及ぼす機械的性質の影響

    トライボロジー会議予稿集東京2008-5  2008 

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  • Linearization of Flaw-Size Distribution of Ceramics

    STAC2&STSI  2008 

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  • Bending strength dependence of fractoluminescence intensity in silica glass, single crystal and polycrystalline MgO

    Tribology Online  2008 

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  • Correlation between the flexure strength and photo nemission intensity during the fracture of single crystal and polycrystalline MgO

    2008 

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  • 円筒介在物による弾性散乱波の位相・振幅に関する理論解析

    日本セラミックス協会2008年年会講演予稿集  2008 

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  • シリカガラスの破壊に伴うフォトンエミッション強度の曲げ強度依存性

    日本セラミックス協会2008年年会講演予稿集  2008 

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  • Estimation of displacement vector of grains in TZP ceramics during superplastic deformation

    Joint conference of STAC2 and STSI1  2008 

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  • Tilt Angle Dependence of Interfacial Fracture Toughness of <0001> Tilt Boundary of Alumina

    The 2nd International Conference on Science and Technology for Advanced Ceramics (STAC2  2008 

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  • Stress analysis for an arbitrary-shaped inclusion with interlayer under out-of-plane shear loading

    The 2nd international conference on science and technology for advanced ceramics  2008 

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  • Influence of the flaw-size distribution's parameter

    MSECJ-08  2008 

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  • Stress analysis around an arbitrary-shaped inclusion with interlayer

    2008 

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  • Theory on the exact value distribution of fracture strength taking the flaw size distribution as an initial distribution

    21st Fall Meeting of The Ceramic Society of Japan  2008 

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  • Detection of damage evolution of refractory by nonlinearity in stress-strain curve

    21st Fall Meeting of The Ceramic Sociaty of Japan  2008 

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  • Estimation of the number of inner cracks in polycrystalline graphite using ultrasonic pulse echo method

    Joint conference of STAC2 and STSI1  2008 

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  • Influence of beta-tricalcium phosphate content on mechanical properties of hydroxyapatite

    Joint conference of STAC2 and SITI1  2008 

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  • The emission of negative charges during fracture of polycrystalline ceramics

    Joint conference of STAC2 and STSI1  2008 

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  • Detection of damage evolution of refractory by nonlinearity in stress-strain curve

    21st Fall Meeting of The Ceramic Sociaty of Japan  2008 

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  • TZPの超塑性変形における結晶粒子の流跡線解析

    日本セラミックス協会第２１回秋季シンポジウム講演予稿集  2008 

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  • Bending strength dependence of fractoluminescence intensity in silica glass, single crystal and polycrystalline MgO

    Tribology Online  2008 

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  • 界面層を有する任意形状介在物問題の面外せん断荷重化の応力解析

    2008 

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  • セラミックスの欠陥寸法原分布のパラメータの破壊強度に及ぼす影響

    2008年度年次大会  2008 

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  • 界面層を有する任意形状介在物周りの弾性応力解析

    日本機械学会2008年度年次大会  2008 

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  • 水酸アパタイト／β－リン酸三カルシウム複合焼結体の機械的性質

    日本セラミックス協会第21回秋季シンポジウム講演予稿集  2008 

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  • 欠陥寸法原分布に基づく厳密極値分布としての破壊強度分布に関する理論解析

    日本セラミックス協会秋季シンポジウム  2008 

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  • Estimation of the number of inner cracks in polycrystalline graphite using ultrasonic pulse echo method

    Joint conference of STAC2 and STSI1  2008 

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  • Influence of beta-tricalcium phosphate content on mechanical properties of hydroxyapatite

    Joint conference of STAC2 and SITI1  2008 

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  • The emission of negative charges during fracture of polycrystalline ceramics

    Joint conference of STAC2 and STSI1  2008 

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  • Estimation of displacement vector of grains in TZP ceramics during superplastic deformation

    Joint conference of STAC2 and STSI1  2008 

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  • Correlation between the flexure strength and photon emission intensity during the fracture of single crystal and polycrystalline MgO

    Joint Confernece of 1st STAC and 2nd JTMC  2007 

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  • Evaluation of Damage for Alumina/Graphite Refractory using Apparent Sonic Velocity Measurement

    Key Engineering Materials  2007 

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  • The Role of Strength, Fracture Cause, and Fracture Location Data on the Reliabiliy Analysis of Ceramics

    Key Engineering Materials  2007 

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  • Influence of grain boundaries on a correlation between the flexure strength and the photon emission during the fracture of MgO

    2007 

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  • Analytical Method of Flaw-Size Data based on the Competing-Risks Model

    20th Fall Meeting of The Ceramic Society of Japan  2007 

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  • Correlation between the flexure strength and photon emission intensity during the fracture of single crystal and polycrystalline MgO

    Joint Confernece of 1st STAC and 2nd JTMC  2007 

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  • Theoretical estimation of work-of-fracture of unidirectional fiber-reinforced composites

    Joint Confernece of 1st STAC and 2nd JTMC  2007 

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  • Optical Microscopy of Multiple Matrix Cracking in a Carbon Fiber-Reinforced Glass Matrix Composite

    Fractography of Glasses and Ceramics  2007 

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  • The Role of Strength, Fracture Cause, and Fracture Location Data on the Reliabiliy Analysis of Ceramics

    Key Engineering Materials  2007 

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  • ＭｇＯの破壊に伴うフォトンエミッションと曲げ強度の相関関係に及ぼす粒界の影響

    日本セラミックス協会 第20回秋季シンポジウム  2007 

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  • 競合リスクモデルにおける欠陥寸法データの解析法

    日本セラミックス協会第20回秋季シンポジウム講演予稿集  2007 

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  • 荷重負荷時に発生した損傷歪分布に基づいた除荷曲線の推定理論

    第20回秋季シンポジウム  2007 

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  • Change in the coordination number distribution during powder compaction by Cyclic CIP

    Materials Science and Technology 2007  2007 

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  • 多結晶MgOの破壊に伴い放出されるフォトンの波長分布に与える粒径の影響

    第15回機械材料・材料加工技術講演会  2007 

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  • 1方向繊維強化複合材料中の繊維の破壊応力と破壊位置に関する周辺分布関数の導出

    第15回機械材料・材料加工技術講演会  2007 

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  • Theoretical estimation of work-of-fracture of unidirectional fiber-reinforced composites

    Joint Confernece of 1st STAC and 2nd JTMC  2007 

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  • Optical Microscopy of Multiple Matrix Cracking in a Carbon Fiber-Reinforced Glass Matrix Composite

    Fractography of Glasses and Ceramics  2007 

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  • Evaluation of Damage for Alumina/Graphite Refractory using Apparent Sonic Velocity Measurement

    Key Engineering Materials  2007 

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  • Estimation theory for unloading curve based on damage strain distribution on loading

    2007 

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  • Change in the coordination number distribution during powder compaction by Cyclic CIP

    Materials Science and Technology 2007  2007 

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  • Influence of a grain size on the wavelength distribution of photons emitted during the fracture of polycrystalline MgO

    2007 

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  • 構造用セラミックスの破壊に伴うエレクトロンエミッションとフォトンエミッションの同時計測

    日本セラミックス協会 2007年年会  2007 

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  • 多結晶黒鉛の損傷発生歪密度関数の決定法に関する考察

    日本セラミックス協会 2007年年会  2007 

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  • 熱衝撃および機械的応力を受けたアルミナー黒鉛質耐火物の超音波パルスエコー法による損傷評価

    第２０回耐火物技術協会年次講演会  2007 

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  • Simultaneous measurement of stiffness and conductacnce in a platinum atomic chain

    2006 

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  • 極値統計に基づく最大欠陥寸法分布の導出と強度分布との関係

    日本セラミックス協会 第19回秋季シンポジウム  2006 

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  • 応力/ひずみ曲線の非線形性から推定されたマイクロクラック発生応力分布に関する理論

    日本セラミックス協会 第19回秋季シンポジウム  2006 

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  • 応力ー歪曲線による多結晶黒鉛の損傷評価

    日本セラミックス協会 第19回秋季シンポジウム  2006 

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  • Derivation of probability distribution of maximim flaw size based on extreme value statistics and the relation to strength distribution

    Proceeding of 19th Fall Meeting of The Ceramics Society of Japan  2006 

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  • Densification Process of Powder Compaction by Cyclic CIP

    Material Science and Technology (MS&S) 2006  2006 

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  • 耐火物の負荷・除荷過程における損傷の評価

    日本セラミックス協会 2006年年会  2006 

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  • 極値統計に基づく最大欠陥寸法分布の導出と強度分布との関係

    第19回秋季シンポジウム講演予稿集  2006 

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  • Densification Process of Powder Compaction by Cyclic CIP

    Material Science and Technology (MS&S) 2006  2006 

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  • The role of strength, fracture,cause and fracture location data on the realiability analysis of ceramics

    The 3rd International Symposium on Advanced Ceramics  2006 

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  • Evaluation of damage for alumina/graphite refractory using apparent sonic velocity measurement

    The 3rd International Symposium on Advanced Ceramics  2006 

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  • The role of strength, fracture,cause and fracture location data on the realiability analysis of ceramics

    The 3rd International Symposium on Advanced Ceramics  2006 

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  • Simultaneous measurement of stiffness and conductacnce in a platinum atomic chain

    2006 

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  • Evaluation of damage for alumina/graphite refractory using apparent sonic velocity measurement

    The 3rd International Symposium on Advanced Ceramics  2006 

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  • 多結晶ジルコニアの超塑性変形における結晶粒子の運動学

    日本セラミックス協会２００６年年会  2006 

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  • 多結晶ジルコニアの超塑性変形における結晶粒子の運動学

    日本セラミックス協会 2006年年会  2006 

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  • セラミックスの強度信頼性解析における各種情報の役割

    日本セラミックス協会 2006年年会  2006 

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  • 長繊維強化セラミックス複合材料の破壊に伴う全散逸エネルギーに関する理論

    日本機械学会 2005年度年次大会  2005 

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  • Search for stable metallic nanowires by conductance and force measurements

    FOM meeting December 2005  2005 

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  • 長繊維強化複合材料の破壊エネルギーに関する評価理論の実験的検証

    日本セラミックス協会 2005年年会  2005 

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  • アルミナ/黒鉛質耐火物の負荷・除荷過程における損傷形成

    日本セラミックス協会 2005年年会  2005 

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  • 高温変形に伴う多結晶ジルコニア結晶粒子の変位ベクトル分布の変化

    日本セラミックス協会 第18回秋季シンポジウム  2005 

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  • 炭素繊維強化ガラスにおける多重マトリックスき裂の生成過程

    日本セラミックス協会 第18回秋季シンポジウム  2005 

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  • Ｃ/Ｃコンポジットの破壊エネルギーに関する理論の実験的検証

    日本セラミックス協会 第18回秋季シンポジウム  2005 

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  • 繰り返し負荷・除荷試験におけるアルミナ/黒鉛質耐火物の音速および減衰率の変化

    日本セラミックス協会 第18回秋季シンポジウム  2005 

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  • 表面および内部を強化したセラミックスの強度信頼性設計理論

    日本セラミックス協会 第18回秋季シンポジウム  2005 

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  • 表面を強化したセラミックスの強度信頼性設計理論

    日本セラミックス協会 2005年年会  2005 

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  • Search for stable metallic nanowires by conductance and force measurements

    FOM meeting December 2005  2005 

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  • 高温変形に伴う多結晶ジルコニア結晶粒子の変位ベクトル分布の変化

    日本セラミックス協会第１８回秋季シンポジウム  2005 

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  • 多結晶ジルコニアの高温変形における結晶粒子の運動学

    第４３回セラミックス基礎科学討論会  2005 

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  • 炭素繊維強化ガラスにおける多重マトリックスき裂の空間分布

    第４３回セラミックス基礎科学討論会  2005 

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  • 多結晶ジルコニアの高温変形における結晶粒子の運動学

    第４３回セラミックス基礎科学討論会  2005 

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  • 多結晶アナターゼ薄膜の光誘起親水性に関するドメインサイズの影響

    2004年 日本セラミックス協会 秋季シンポジウム  2004 

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  • Effect of Grain Size on the Photo-induced Hydrophilicity of the Polycrystalline TiO2 Thin Films by Sol-Gel Process

    The Ninth International Conference on TiO2 Photocatalysis: Fundamentals & Applications  2004 

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  • Effect of Grain Size on the Photo-induced Hydrophilicity of the Polycrystalline TiO2 Thin Films by Sol-Gel Process

    The Ninth International Conference on TiO2 Photocatalysis: Fundamentals & Applications  2004 

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  • Si(111)からの非定常イオン放出現象

    第22回表面科学講演大会講演要旨集  2002 

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  • 走査型ケルビンプローブ顕微鏡によるSi(111)の高分解能表面電位分布観察

    第22回表面科学講演大会講演要旨集  2002 

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  • NC-AFMにおける静電気力の影響

    2001 

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  • Application of the first-principles calculation in the exoemission of electrons from aluminum tips

    2000 

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  • Exoemission of electrons from tungsten surfaces under the effect of high electric field

    Latvian Journal of Physics and Technical Sciences  2000 

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  • Field-stimulated exoemission of electrons induced by the distortion of atomic arrangement at tungsten surfaces

    2000 

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  • Application of the first-principles calculation in the exoemission of electrons from aluminum tips

    2000 

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  • Exoemission of electrons from tungsten surfaces under the effect of high electric field

    Latvian Journal of Physics and Technical Sciences  2000 

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  • Field-stimulated exoemission of electrons induced by the distortion of atomic arrangement at tungsten surfaces

    2000 

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  • 表面原子拡散に伴う電界刺激エキソ電子放射

    第46回応用物理学関係連合講演会講演予稿集  1999 

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  • Origin of the field stimulated exoelectron emission from tungsten tip surfaes

    Ultramicroscopy  1998 

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  • Origin of the field stimulated exoelectron emission from tungsten tip surfaes

    Ultramicroscopy  1998 

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  • Emission behavior of field stimulated exoelectrons from tungsten surfaces under various hydrogen exposures

    Proceedings of the 12th international symposium on exoemission and its applications  1997 

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  • Field stimulated exoelectron emission -A survey of recent result-

    Proceedings of the 2nd symposium on Tribochemistry  1997 

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  • Emission characteristics of the field stimulated exoelectrons from tungsten tips -Does clean surface liberate exoelectrons-

    Proceedings of the 12th international symposium on exoemission and its applications  1997 

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  • Emission behavior of field stimulated exoelectrons from tungsten surfaces under various hydrogen exposures

    Proceedings of the 12th international symposium on exoemission and its applications  1997 

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  • Field stimulated exoelectron emission -A survey of recent result-

    Proceedings of the 2nd symposium on Tribochemistry  1997 

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  • Emission characteristics of the field stimulated exoelectrons from tungsten tips -Does clean surface liberate exoelectrons-

    Proceedings of the 12th international symposium on exoemission and its applications  1997 

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Research Projects

  • 長寿命セラミック人工関節を実現する高機能酸炭化ケイ素コーティングの開発

    Grant number：23K26392  2023.04 - 2026.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    塩田 忠, 吉岡 朋彦

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    Grant amount：\19240000 （ Direct expense: \14800000 、 Indirect expense：\4440000 ）

    本研究は，セラミック人工関節のしゅう動性向上を目指した酸炭化ケイ素（SiCxOy）コーティングの開発を目的としている．今年度は，成膜装置の構築，コーティングの密着性を確保する中間層材料の探索手法の検討，摩擦による疑似関節液中の生体高分子の変化を分析する手法の検討，を実施した．以下に今年度の成果を示す．
    ・ 既存の装置を改造して超高真空スパッタリング装置を構築することにより，残留酸素の低減，および，中間層とSiCxOyコーティングの連続成膜を可能とした．SiCターゲットを用いてSiCxOyコーティングを成膜し，コーティング中の酸素割合が，従来よりも低減したことを確認した．これより，コーティングの炭素（C）と酸素（O）の組成比を従来よりも広範囲に変化させることが可能となった．
    ・ コーティングの密着性を向上させる中間層材料探索のため，中間層材料とアルミナの界面結合エネルギーを第一原理計算により計算した．その結果，Ti系材料とアルミナとの結合が強いことが分かり，Ti系材料が中間層材料に適していることが示唆された．
    ・ 疑似関節液中における往復しゅう動試験により，アルミナ基板および炭化ケイ素基板の摩擦摩耗特性を測定した．疑似関節液中に含まれるタンパク質が摩擦摩耗特性に影響を及ぼすことが明らかとなり，今後測定するSiCxOyコーティングの摩擦摩耗特性に対する比較データを得た．
    ・ 既存の赤外吸収分光（FT-IR）装置に全反射測定ユニットを追加することにより，潤滑液中のタンパク質（アルブミン）のFT-IRスペクトルを得た．amide I 由来のピークをピーク分離することにより二次構造（α-helix）の割合を算出したところ，潤滑液中のアルブミンに変性は見られなかった．

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  • Development of smart radiation device by metal-insulator phase transition for artificial satellites

    Grant number：26630308  2014.04 - 2016.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Shinozaki Kazuo, SAKURAI Osamu, SHIOTA Tadashi, WAKIYA Naoki, TACHIKAWA Sumitaka

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    Grant amount：\3900000 （ Direct expense: \3000000 、 Indirect expense：\900000 ）

    (Lal-xSrx)Mn03(LSMO) thin films were deposited on Si substrate by the sputtering and the chemical solution deposition (CSD) methods for controlling the thermal emissivity with changing the ambient temperature using the metal-insulator phase transition of LSMO. This is useful for control the internal temperature of the artificial satellite. In the RF magnetron-sputtering method, it is clear that RF power is the most important process factor to determine the composition of the LSMO film. Since the composition varied both La/Sr ratio and (La+Sr)/Mn ratio in the sputtering compared with PLD, we introduce the special factor named the apparent Mn valence number = 2(3-δ)-a(3-x) in (La1-xSrx)aMnO3, The apparent Mn valence number is useful to explain consistently the tendency of phase transition temperature. In the CSD method, we determined the optimum fabrication conditions and clarified the effect of composition and annealing in various Po2 on the phase transition temperatures.

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  • Development of homogeneous solid electrolyte/electrode structureby chemical vapor deposition method

    Grant number：23656426  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    SHINOZAKI Kazuo, SAKURAI Osamu, SHIOTA Tadashi, WAKIYA Naoki, KIGUCHI Takanori

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    Grant amount：\3900000 （ Direct expense: \3000000 、 Indirect expense：\900000 ）

    Typical fabrication process of making solid electrolyte for the fuel cell is sintering. However it brings the inhomogeneity of cations from the in sufficient mixing of the raw materials and local diffusion during the sintering and also during long time running of power generation. These inhomogeneity is enhanced the large amount of trivalent cation doping, such as 20-30 at%. We proposed the chemical vapor deposition (CVD) using Ce(EtCp)_4 (Ce (C_5H_4C_2H_5)_4) and Gd(EtCp)_3 (Gd(C_5H_4C_2H_5)_3) as the source materials. In this research, we determined the optimum condition of these raw materials for CVD process for low-pressure coldwall-type-CVD apparatus. We succeeded to fabricate the columnar type GDC film on Al_2O_3, SiO_2/Si substrates. It was found that the film was grown at around 300℃ and has columnar structure that means no grain boundary in the out of plane direction. Since thinner thickness of the film and almost no grain boundary along the out of plane direction, oxide ion can be able to diffuse even at 180℃ by AC measurement. New type atmospheric pressure CVD apparatus was developed to grow the film with very fast growth rate. We also tried to fabricated the porous electrodes with dense surface layer for the anode: Ni-GDC and the cathode: LaSrCoO_3-GDC. GDC thin films by low pressure CVD were fabricated on the porous electrodes, and tried to generate the electric power in the H_2-O_2 system. Since the power generation test system is preliminary, but we have several important point to realize the CVD derived electrolyte system.

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  • Kinematical Theory for Grain Motion during Superplastic Deformation

    Grant number：20560067  2008 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    YASUDA Kouichi, SHIOTA Tadashi, OKAMOTO Taku

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    Grant amount：\4550000 （ Direct expense: \3500000 、 Indirect expense：\1050000 ）

    The displacement vectors of 748 grains of tetragonal zirconia ceramics were measured by electron microscopic observation of grain structure before and after superplastic deformation. Trajectory analysis showed that grains moved in zigzag way. So, the displacement vector was divided into the random walk vector and the drift vector calculated by finite element analysis Variances of random walk vectors for tensile direction and lateral direction had an inverse correlation at the beginning of superplastic deformation, however, these two variances became the almost same value with the deformation. The tendency was analyzed with Langevin equation.

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  • Phonon analysis and crystal chemical simulation of dielectrics based on sub-millimeter wave ellipsometry

    Grant number：19206068  2007 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    TSURUMI Takaaki, TAKEDA Hiroaki, HOSHINA Takuya

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    Grant amount：\47450000 （ Direct expense: \36500000 、 Indirect expense：\10950000 ）

    Sub-millimeter wave spectroscopic ellipsometry has been developed to study the size effect of barium titanate and the phase transition behaviors of barium titanate-based relaxors. Ellipsometer is equipment which measures the change of polarizing state of reflected light to determine the complex dielectric permittivity of materials. Accuracy of the ellipsometer developed in this study was verified and the complex permittivity of a barium titanate single crystal was directly determined using it. S for the size effect, the permittivity of barium titanate ceramics increased with decreasing grain size when the grain size was over 1.1μm, while that decreased when the grain size was below 1μm. Most of the domains in BaTiO_3 grains had simple lamellar structures, and 90° domain width decreased with decreasing grain size. Based on wide band dielectric spectroscopy, the domain contribution to the permittivity was investigated. In BaTiO_3 ceramics with grain sizes over 1μm, the dipole and ionic polarizabilities were enhanced by the high domain density. In contrast, for the BaTiO_3 ceramics with grain sizes below 1μm, these polarizabilities were weakened. As for the phase transition of barium titanate-based relaxors, wideband dielectric spectra from kHz to THz were measured for ceramics of BaTiO_3 (BT), Ba_<0.6>Sr_<0.4>TiO_3 (BST-0.6) and BaZr_<0.25>Ti_<0.75>O_3 (BZT-0.25). The behavior in the dipole polarization near the dielectric maximum temperature (T_m) in BST-0.6 and BZT-0.25 could be explained by the behavior in polar nanoregions (PNRs), while the ferroelectric domains contribute to dipole polarization in BT. Relaxation in BT could be interpreted as successive change in polarization behavior from normal ferroelectrics to relaxor ferroelectric via DPT ferroelectrics.

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Class subject in charge

  • Tribological Machine Design （2025academic year） Prophase  - 火3～4,木1～2

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  • Basic Physics （Classical Mechanics） 1 （2022academic year） Third semester  - 火5～6

  • Basic Physics （Classical Mechanics） 1 （2022academic year） Third semester  - 火5～6

  • Basic Physics （Classical Mechanics） 1 （2022academic year） Third semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） 2 （2022academic year） Fourth semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics （Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Basic Physics 1（Classical Mechanics） （2022academic year） 3rd and 4th semester  - 火5～6

  • Seminar on Industrial Technologies （2022academic year） Late  - 水5,水6,水7,水8

  • Surface Engineering （2022academic year） Prophase  - 木3,木4

  • CAD （2022academic year） 1st and 2nd semester  - 水1～2

  • CAD （2022academic year） 1st and 2nd semester  - 水1～2

  • Basic Mechanical System Drawing （2021academic year） 1st and 2nd semester  - 木5,木6,木7,木8

  • Basic Mechanical System Drawing （2021academic year） 1st and 2nd semester  - 木5,木6,木7,木8

  • Applied Surface Engineering （2021academic year） Late  - その他

  • Fundamentals of Vibration （2021academic year） 1st semester  - 月3,月4,木1,木2

  • Seminar for Mechanical Engineers II （2021academic year） Third semester  - 水5,水6,水7,水8

  • Seminar for Mechanical and Systems Engineers II （2021academic year） Third semester  - 水5,水6,水7,水8

  • Seminar for Mechanical and Systems Engineers II （2021academic year） Third semester  - 水5,水6,水7,水8

  • Seminar for Mechanical Engineers I （2021academic year） 1st semester  - 水5,水6,水7,水8

  • Seminar for Mechanical and Systems Engineers I （2021academic year） 1st semester  - 水5,水6,水7,水8

  • Seminar for Mechanical and Systems Engineers I （2021academic year） 1st semester  - 水5,水6,水7,水8

  • Introduction to Mechanical and Systems Engineering （2021academic year） Prophase  - 金1,金2

  • Research Works for Mechanical and Systems Engineering 1 （2021academic year） Prophase  - その他

  • Research Works for Mechanical and Systems Engineering 2 （2021academic year） Late  - その他

  • Seminar in Machine Design and Tribology （2021academic year） Year-round  - その他

  • Basic Physics （Classical Mechanics） 1 （2021academic year） Third semester  - 火5,火6

  • Basic Physics （Classical Mechanics） 2 （2021academic year） Fourth semester  - 火5,火6

  • Basic Physics （Classical Mechanics） （2021academic year） 3rd and 4th semester  - 火5,火6

  • Basic Physics 1（Classical Mechanics） （2021academic year） 3rd and 4th semester  - 火5,火6

  • Surface Engineering （2021academic year） Prophase  - 木3,木4

  • CAD （2021academic year） 1st and 2nd semester  - 水1,水2

  • CAD （2021academic year） 1st and 2nd semester  - 水1,水2

  • Basic Mechanical System Drawing （2020academic year） 1st and 2nd semester  - 木5,木6,木7,木8

  • Basic Mechanical System Drawing （2020academic year） 1st and 2nd semester  - 木5,木6,木7,木8

  • Applied Surface Engineering （2020academic year） special  - その他

  • Fundamentals of Vibration （2020academic year） 1st semester  - 月3,月4,木1,木2

  • Fundamentals of Vibration （2020academic year） 1st semester  - 月3,月4,木1,木2

  • Research Works for Mechanical and Systems Engineering 1 （2020academic year） Prophase  - その他

  • Research Works for Mechanical and Systems Engineering 2 （2020academic year） Late  - その他

  • Seminar in Machine Design and Tribology （2020academic year） Year-round  - その他

  • Surface Engineering （2020academic year） Prophase  - 木3,木4

  • CAD （2020academic year） 1st and 2nd semester  - 水1,水2

  • CAD （2020academic year） 1st and 2nd semester  - 水1,水2

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