Faculty Profiles - TADA Naoya

Papers - TADA Naoya

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625 Compressive Forming Limit of Cast AZ31 Magnesium Alloy during Nonproportional Strain Paths

AKIYAMA Daisuke, SHIMIZU Ichiro, HIRANO Seiki, TADA Naoya

61 No.0110 - 382 2012

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

Naoya Tada, Ryo Nishihara, Hiroyasu Masago

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

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

Naoya Tada, Makoto Uchida, Yuki Uenoyama

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

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

Makoto Uchida, Naoya Tada

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

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

M. Uchida, N. TADA

Proceedings of 4th International Conference on Computational Methods ID197 2012

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

Makoto Uchida, Naoya Tada

INTERNATIONAL JOURNAL OF PLASTICITY 27 ( 12 ) 2085 - 2102 2011.12

Development of Press Machine by Means of Reverse-type Differential Rotary to Linear Conversion Mechanism Reviewed

SHIMIZU Ichiro, SEKI Masanori, MATSUI Takafumi, TADA Naoya, FUJII Masahiro, YOSHIDA Akira

Journal of Japan Society for Design Engineering 46 ( 1 ) 40 - 47 2011.1

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 Reviewed

多田直哉

検査技術 16 ( 5 ) 21 - 28 2011

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

OS09-4-2 Experimental Modeling of Vehicle Deformation in Pole Side Impact by Means of Lateral Compression of Rectangular Steel Tube

ONO Tadanori, SHIMIZU Ichiro, TADA Naoya, TAKUBO Nobuaki

Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011 ( 10 ) OS09-4-2 - 4-2-1" 2011

Deformation Behavior of Multilayered Ceramic Sheets with Printed Electrodes under Compression

NARUSE Fumio, TADA Naoya

Journal of Solid Mechanics and Materials Engineering 6 ( 6 ) OS18F003 - 770 2011

Language：English Publisher：The Japan Society of Mechanical Engineers

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

CiNii Article

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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

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

Naoya Tada, Makoto Uchida, Hiroki Maeda, Atsushi Hozuki

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

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

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

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 Reviewed

多田直哉, 内田真

非破壊検査 60 ( 10 ) 592 - 598 2011

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

Modeling of Micro- to Mesoscopic Deformation Behavior of Semi-Crystalline Polymer Based on Laminar Composite Model

UCHIDA Makoto, TADA Naoya, TOMITA Yoshihiro

Transactions of the Japan Society of Mechanical Engineers Series B 77 ( 778 ) 902 - 915 2011

Publisher：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 Reviewed

Makoto Uchida, Tsuruyo Tokuda, Naoya Tada

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 52 ( 2 ) 158 - 167 2010.2

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

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

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

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

Ichiro SHIMIZU, Junya IDEI, Naoya TADA

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

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