Papers - Omiya, Masaki

Crack formation in Membrane Electrode Assembly Under Static and Cyclic Loadings

KAI Yusuke, KITAYAMA Yuki, OMIYA Masaki, UCHIYAMA Tomoyuki, KATO Manabu

Journal of Fuel Cell Science and Technology (ASME)  10   021007-1-8 2013.04

Research paper (scientific journal), Joint Work, Accepted

Experimental and numerical evaluation of interfacial adhesion on Cu/SiN in LSI interconnect structures

OMIYA Masaki, KOIWA Kozo, SHISHIDO Nobuyuki,KAMIYA Shoji, CHEN Chuantong, SATO Hisashi, NISHIDA Masahiro, SUZUKI Takashi, NAKAMURA Tomoji, SUZUKI Toshiaki, NOKUO Takeshi

Microelectronics Reliability (Elsevier)  53 ( 4 ) 612 - 621 2013.04

Research paper (scientific journal), Joint Work, Accepted

　View Summary

The local interfacial strength is a key factor in designing and fabricating advanced three-dimensional large-scale integration interconnect structures. In this paper, both local fracture tests and three-dimensional elastic–plastic crack propagation analysis for a 10 μm × 10 μm specimen were performed, and the local interfacial adhesion between a Cu interconnect and a SiN cap layer were evaluated. The three-dimensional elastic–plastic crack propagation simulation was developed to evaluate the interfacial adhesion that eliminated the effect of progressive plastic dissipation energy during crack propagation. The results show that the average interfacial adhesion for Cu/SiN is 4.46 ± 0.17 J/m2. The crack propagation behavior and fracture pattern depend on the interfacial adhesion, and these differences are due to the plastic yielding of the side edge of the specimen. The critical interfacial adhesion for the onset of shear fracture is 4.92 J/m^2, which is the upper bound of the interfacial adhesion evaluation for the 10 μm × 10 μm specimen.

Specimen Size Effect of Interface Strength Distribution Induced by Grain Structure of Cu Line

CHEN Chuantong, SHISHIDO Nobuyuki, KOIWA Kozo, KAMIYA Shoji, SATO Hisashi, NISHIDA Masahiro, OMIYA Masaki, SUZUKI Takashi, NAKAMURA Tomoji, SUZUKI Toshiaki, NOKUO Takeshi

日本機械学会論文集（A 編）ノート (日本機械学会)  79 ( 799 ) 354-358 2013.03

Research paper (scientific journal), Joint Work, Accepted

柔道における後頭衝突時の急性硬膜下血種発生評価指標の比較と頭部保護の効果

AIBA Kazuki, OMIYA Masaki, ITEYA Misaki, KAMITANI Takeshi, TOMATSU Taisuke

日本機械学会論文集A編 (日本機械学会)  78 ( 796 ) 1631 - 1641 2012.12

Research paper (scientific journal), Joint Work, Accepted

固体高分子形燃料電池のイオン交換膜・電極接合体の疲労特性

KITAYAMA Yuki, KAI Yusuke, OMIYA Masaki

第31回疲労シンポジウム講演論文集 (日本材料学会疲労部門委員会)     196-197 2012.11

Research paper (conference, symposium, etc.), Joint Work

ショットピーニングにおける疲労強度特性向上の予測

KATO Yuki, OMIYA Masaki, HOSHINO Hiroaki

第31回疲労シンポジウム講演論文集 (日本材料学会疲労部門委員会)     11 - 15 2012.11

Research paper (conference, symposium, etc.), Joint Work

後頭部衝突時における頭部外傷の発生防止に対する衝撃緩和材の効果

SUZUKI Ryutaro, OMIYA Masaki

シンポジウム：スポーツ・アンド・ヒューマンダイナミクス2012 (日本機械学会)     469-472 2012.11

Research paper (conference, symposium, etc.), Joint Work

Effect of Molding Condition on the Compressive Properties of PLA-PBAT Blend Materials

GUSHIKEN Tomohiko, OMIYA Masaki

ISEM-ACEM-SEM-7thISEM'12 (National Tsing Hua University, Taiwan Society for Experimental Mechanics, U. S. A. Asian Society of Experimental Mechanics Japanese Society for Experimental Mechanics)     A152 2012.11

Research paper (conference, symposium, etc.), Joint Work

Characteristics of Ionic Polymer Metal Composite Actuator in several pH solutions

AOYAGI Wataru, OMIYA Masaki

ISEM-ACEM-SEM-7thISEM'12 (National Tsing Hua University, Taiwan Society for Experimental Mechanics, U. S. A. Asian Society of Experimental Mechanics Japanese Society for Experimental Mechanics)     F108 2012.11

Research paper (conference, symposium, etc.), Joint Work

Grain-scale adhesion strength mapping of copper wiring structures in integrated circuits

Shoji Kamiya, Nobuyuki Shishido, Shinsuke Watanabe, Hisashi Sato, Kozo Koiwa, Masaki Omiya, Masahiro Nishida, Takashi Suzuki, Tomoji Nakamura, Takeshi Nokuo, Tadahiro Nagasawa

Surface and Coatings Technology (Elsevier)  215 ( 25 ) 280 - 284 2012.11

Research paper (scientific journal), Joint Work, Accepted

ナノ構造を有するTiO2薄膜

FUJIWARA Keisuke, OMIYA Masaki

第56回日本学術会議材料工学連合講演会講演論文集 (日本学術会議材料工学委員会)     367-368 2012.10

Research paper (conference, symposium, etc.), Joint Work

構造物の荷重経路U*解析と乗用車車体における伝達荷重分担のバランス

OMIYA Masaki

日本機械学会集A編 (日本機械学会)  78 ( 794 ) 1462 - 1472 2012.10

Research paper (scientific journal), Joint Work, Accepted

　View Summary

The authors investigate the overall structural balance of stiffness from the viewpoint of load transfer and load paths. The concept of load transfer balance is examined and graphically expressed using U*. Index U* is a new concept introduced by the authors to express load transfer in structures. The load transfer balance is calculated for an automotive body structure under conditions of vertical loading on the front suspension. The load transfer balance of a body affects the drivability of an automobile. Through the use of figures showing the U* distribution along load transfer paths, the balance of load transfer is clearly expressed. From these figures, it is shown that frontal load is mainly transferred to the lower structure rather than to the upper structure in the vehicle body used in this study. Diagrams and histograms for U*sum, which is the summation of two kinds of U*s, are presented in this study to show the load transfer balance more precisely. These figures show that the transition of load transfer balance to the lower structure is caused by the stiffened support effect near the rear supporting points.

ナノ構造体を形成した層間絶縁膜の機械的特性の評価

MAENO Ryota, FUJII Toshiki, OMIYA Masaki

M&M2012カンファレンス (日本機械学会)     OS1906(2pp) 2012.09

Research paper (conference, symposium, etc.), Joint Work

Failure Prediction for Membrane Electrode Assembly

VERMOT DES ROCHES Thibaud, OMIYA Masaki

M&M2012カンファレンス (日本機械学会)     OS0620(2pp) 2012.09

Research paper (conference, symposium, etc.), Joint Work

柔道における急性硬膜下血種発生評価指標の比較と頭部保護具の効果

OMIYA Masaki

日本機械学会2012年度年次大会講演論文集 (日本機械学会)     J021014(4pp) 2012.09

Research paper (conference, symposium, etc.), Joint Work

イオン導電性高分子アクチュエータの変形挙動に関するpH特性

AOYAGI Wataru, OMIYA Masaki

日本機械学会2012年度年次大会講演論文集 (日本機械学会)     J044111(5pp) 2012.09

Research paper (conference, symposium, etc.), Joint Work

Deformation behaviors of ionic-polymer–metal composite actuator with palladium electrodes for various solvents, temperatures, and frequencies

KOBAYASHI Takuma, OMIYA Masaki

Smart Materials and Structures (IOP Publishing)  21 ( 10 ) 105031 2012.08

Research paper (scientific journal), Joint Work, Accepted

　View Summary

An ionic-polymer–metal composite (IPMC) actuator with palladium electrodes was fabricated by non-electrolytic plating. It is cheaper and lighter than actuators with electrodes made from conventional materials such as gold and platinum. The deformation properties of the IPMC actuator were evaluated and its bending response was found to increase with increasing ionic radius of the cation. The solvent temperature affects the deformation speed, but not the maximum curvature. The IPMC actuator exhibits a good response at frequencies below its resonant frequency. The resonant frequency was reasonably estimated by a cantilever beam model. The generative mechanical power increased with both the effective length and the width of IPMC actuator. To increase the mechanical power, making longer IPMC actuators is more efficient than making wider IPMC actuators.

Multibody Dynamics Modeling of Particle Behaviors in Shot Peening Process

KATO Yuki, OMIYA Masaki, HOSHINO Hiroaki

The 6th Asian Conference on Multibody Dynamics (Shanghai Jiao Tong University)   2012.08

Research paper (conference, symposium, etc.), Joint Work

破壊力学研究の最新動向

OMIYA Masaki

日本機械学会誌 (日本機械学会)  115 ( 1125 ) 16-17 2012.08

Research paper (other academic), Single Work

後頭部衝突時における頭蓋内挙動のモデル化

鈴木隆太郎，相場一希，小畑智笑子，大宮正毅

第61回理論応用力学講演会 (日本学術会議　機械工学委員会，土木工学・建築学委員会合同IUTAM分科会)     OS15-22 2012.03

Research paper (conference, symposium, etc.), Joint Work