研究者詳細 - 多田　直哉

論文 - 多田　直哉

分割表示 154 件中 61 - 80 件目／全件表示 >>

Study on Compressive Forming Limit of Cast AZ31 Magnesium Alloy under Non-Proportional Strain Paths

Ichiro Shimizu, Naoya Tada, Daisuke Akiyama, Seiki Hirano

Proceedings of Joint International Conference of The 2nd International Symposium on Experimental Mechanics, The 11th Asian Conference on Experimental Mechanics and 2012 Society for Experimental Mechanics Fall Conference, 7th International Symposium on ・・・ 61 No.0110 - 382 2012年

記述言語：日本語出版者・発行元：日本材料学会

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Tensile Test of Small Lead-Free Solder Joint Using Permanent Magnet 査読

Naoya Tada, Ryo Nishihara, Hiroyasu Masago

2012 7TH INTERNATIONAL MICROSYSTEMS, PACKAGING, ASSEMBLY AND CIRCUITS TECHNOLOGY CONFERENCE (IMPACT) 346 - 349 2012年

NON-DESTRUCTIVE CRACK DETECTION BY NANOMETRIC CHANGE IN SURFACE PROFILE USING DIGITAL HOLOGRAPHIC MICROSCOPE 査読

Naoya Tada, Makoto Uchida, Yuki Uenoyama

PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, PVP 2012, VOL 5 251 - 257 2012年

Effect of Spherulite Size on Macroscopically Non-Uniform Deformation of Semi-Crystalline Polymer 査読

Makoto Uchida, Naoya Tada

Proceedings of PLASTICITY '12: The Eighteenth International Symposium on Plasticity and Its Current Applications 316 - 318 2012年

Computational Simulation of Polymer RVE Model under Boundary Condition with Macroscopic Strain Gradient 査読

M. Uchida, N. TADA

Proceedings of 4th International Conference on Computational Methods ID197 2012年

Sequential evaluation of continuous deformation field of semi-crystalline polymers during tensile deformation accompanied by neck propagation 査読

Makoto Uchida, Naoya Tada

INTERNATIONAL JOURNAL OF PLASTICITY 27 ( 12 ) 2085 - 2102 2011年12月

リバース式差動回転直動変換機構を用いたプレス装置の開発査読

清水一郎, 關正憲, 松井崇史, 多田直哉, 藤井正浩, 吉田彰

設計工学 46 ( 1 ) 40 - 47 2011年1月

解説直流電位差法を用いた配管内外表面き裂と肉厚評価の最新技術査読

多田直哉

検査技術 16 ( 5 ) 21 - 28 2011年

Influence of Plastic Anisotropy on Compressive Forming Limit of AZ31 Magnesium Alloy

Ichiro SHIMIZU, Kosuke Okada, Seiki Hirano, Naoya TADA

Proceedings of International Symposium on Advanced Science and Technology in Experimental Mechanics (6th ISEM '11-Sendai/Kansai) 121 2011年

Experimental Modeling of Vehicle Deformation in Pole Side Impact by Means of Lateral Compression of Rectangular Steel Tube

Tadanori Ono, Ichiro Shimizu, Naoya Tada, Nobuaki Takubo

Proc. International Conference on Advanced Technology in Experimental Mechanics 2011 (ATEM '11) 2011 ( 10 ) OS09-4-2 - 4-2-1" 2011年

Deformation Behavior of Multilayered Ceramic Sheets with Printed Electrodes under Compression

Fumio Naruse, Naoya Tada

Proc. International Conference on Advanced Technology in Experimental Mechanics 2011 (ATEM '11) 6 ( 6 ) OS18F003 - 770 2011年

記述言語：英語出版者・発行元：一般社団法人日本機械学会

Deformation behavior of multi-layered ceramic capacitors (MLCCs) during production press process is very important to reduce over all MLCC size and increase the capacity of the MLCC through the enlargement of the electrode area. In this study, compression tests of MLCC blocks, which were composed of stacked ceramic dielectric sheets and printed internal electrodes, were carried out, and the deformation process was clarified based on the results of cross-sectional observation. Deformation of MLCC block was modeled and predicted using the area fraction of dielectric sheets, internal electrodes, and internal space. The prediction agreed well with the experimental results and helps the optimization of MLCC design.

DOI： 10.1299/jmmp.6.760

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Effect of Distribution of Spherulite on the Non-Uniform Plastic Deformation Behaviour of Semi-Crystalline Polymer

M. Uchida, N. Tada

Computational Plasticity XI, Fundamentals and Applications (COMPLAS XI) 2011年

Detection of stress corrosion cracking by direct-current potential difference method 査読

Naoya Tada, Makoto Uchida, Hiroki Maeda, Atsushi Hozuki

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP 5 217 - 224 2011年

A method of crack detection in the turbine blade using digital holographic microscopy (DHM) 査読

Naoya Tada, Seiichi Hamada, Tetsuo Teramae, Shin Yoshino, Takehiko Suzuki

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP 5 211 - 216 2011年

解説デジタルホログラフィック顕微鏡を用いた材料表面特性評価査読

多田直哉, 内田真

非破壊検査 60 ( 10 ) 592 - 598 2011年

解説直流電位差計測に基づくき裂評価手法の展開

武尾文雄, 多田直哉

非破壊検査 60 ( 10 ) 572 - 578 2011年

積層複合体モデルに基づく結晶性高分子材料のミクロ・メゾスケールの変形挙動のモデル化

内田真, 多田直哉, 冨田佳宏

日本機械学会論文集 A編 77 ( 778 ) 902 - 915 2011年

出版者・発行元：The Japan Society of Mechanical Engineers

Since semi-crystalline polymer has very complex hierarchical structure, it is essential to construct a suitable multiscale mechanical model for the prediction of its mechanical characteristics. For the establishment of the triple scale mechanical model of semi-crystalline polymer, which can reflect the non-uniform deformations in micro-, meso- and macroscopic scales, computationally efficient model to relate structures and deformations in micro- to mesoscopic scales is indispensable. In this paper, to solve the problems, tangent modulus method was introduced into the constitutive equations for crystalline and amorphous phases consisting of the microstructure of semi-crystalline polymer. Furthermore, we proposed a new laminar composite model connecting deformations in micro- to mesoscopic scales based on the equilibrium of stress acting on the interface between the phases and the compatibility of deformation along the interface. Appropriate time steps for stable simulation and validity of the proposed model were examined through the computational simulation of uniaxial tension of single lamellar and spherulite models of high density polyethylene. It has been clarified that the proposed model could predict an elasto-viscoplastic deformation behavior of semi-crystalline polymer in markedly less computational time and memory.

DOI： 10.1299/kikaia.77.902

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Finite element simulation of deformation behavior of semi-crystalline polymers with multi-spherulitic mesostructure 査読

Makoto Uchida, Tsuruyo Tokuda, Naoya Tada

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 52 ( 2 ) 158 - 167 2010年2月

A Study on the Fatigue Life Evaluation of Vibration Insulator Considering the Effect of Creep 査読

Prabhakar Soma, Naoya Tada, Makoto Uchida, Kazunari Nakahara, Tetsuya Miyake

Conference Proceeding (Programme and Abstracts), International Rubber Conference & Exhibition 2010 426 - 429 2010年

Influence of Initial Texture on Plastic Behavior of Pure Titanium in Biaxial Compression 査読

Ichiro SHIMIZU, Junya IDEI, Naoya TADA

Proceedings of the 5th International Symposium on Advanced Science and Technology in Experimental Mechanics 2010年

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