Faculty Profiles - SAKAMOTO Junji

Presentations -

Division display 21 - 40 of about 70 ／ All the affair displays >>

Numerical Investigation on Rolling Texture of Aluminum by Crystal Plasticity Theory

TANABE Takuya, UEMORI Takeshi, TADA Naoya, SAKAMOTO Junji, MITSUI Kousuke, ONODERA Kouki

The Proceedings of Conference of Chugoku-Shikoku Branch 2021 The Japan Society of Mechanical Engineers

Analytical Study on Evaluation of Bauschinger Effect of Aluminum Sheet by L-bending Test

NISHIYAMA Daigo, UEMORI Takeshi, TADA Naoya, SAKAMOTO Junji

The Proceedings of Conference of Chugoku-Shikoku Branch 2021 The Japan Society of Mechanical Engineers

Study on slip deformation behavior of crystal grains in notched thin sheet specimens of pure titanium during tension

ISHIDA Takashi, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, ISHIMARU Keita

The Proceedings of Conference of Chugoku-Shikoku Branch 2021 The Japan Society of Mechanical Engineers

面内反転時の6056アルミニウム合金の応力-ひずみ応答に関する解析的検討

酒匂麻帆, 上森武, 多田直哉, 坂本惇司

日本金属学会講演大会(Web) 2021

アルミニウム合金の温間二軸引張変形挙動の解析的検討

村尾侑亮, 上森武, 多田直哉, 坂本惇司

日本金属学会講演大会(Web) 2021

リーン型二相ステンレス鋼板の二軸応力状態下における塑性変形挙動の実験的検討

藤田隼輔, 上森武, 多田直哉, 坂本惇司, 石丸詠一朗

塑性加工連合講演会講演論文集 2020.11.14

Crystal plastic homogenization finite element analysis of Ti-6242 alloy subjected to in-plane reverse loading

MITSUI Kousuke, UEMORI Takeshi, TADA Naoya, SAKAMOTO Junji

The Proceedings of Mechanical Engineering Congress, Japan 2020.9.14 The Japan Society of Mechanical Engineers

Event date： 2020.9.13 - 2020.9.16

Language：Japanese Presentation type：Oral presentation (general)

<p>To investigate effects of dislocation density on microscopic stress distribution and macroscopic stress-strain relation, we conducted crystal plastic homogenization finite element analysis of Ti-6242 alloy subjected to in-plane reverse loading with dislocation density calculation. As a result, Statistically Stored (SS) dislocation density increased with occurrence of slip deformation for all conditions. On the other hand, Geometrically Necessary (GN) dislocation density was less likely to accumulate at the interface in the parallel relationship between primary slip systems of hcp and bcc. Although GN dislocations only develop near the interface, a large increase in GN dislocation density affects the macroscopic stress-strain relation.</p>

researchmap

Evaluation of Stress Reversal Deformation Behavior of 590 MPa High Tensile Strength Steel Sheet by Using L-Bending Analysis

上森武, 多田直哉, 坂本惇司, 中本浩聖, 西山大悟, 松村宗一郎, 成田忍

日本材料学会学術講演会講演論文集 2020.5

Evaluation of Tensile and Bending Damages of CFRP Laminates by DC Potential Difference Method

SATO Kazuma, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, KOMOTO Shohei, SUZUKI Natsumi, TAKANASHI Masahiro

The Proceedings of Conference of Chugoku-Shikoku Branch 2020.3 The Japan Society of Mechanical Engineers

Experimental study on strength differential effect of stainless steel sheet

柴井宏治, 上森武, 多田直哉, 坂本惇司

材料とプロセス(CD-ROM) 2020.3

Effect of resin film lamination on tensile deformation characteristics of stainless steel foil

信定宥杜, 多田直哉, 坂本惇司, 上森武

材料とプロセス(CD-ROM) 2020.3

Numerical analysis for inhomogeneous compressive deformation of Multi-Layered Ceramic Capacitor block

TAMAO Seijiro, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji

The Proceedings of Conference of Chugoku-Shikoku Branch 2020.3 The Japan Society of Mechanical Engineers

Surface height change during tensile deformation of natural rubber reinforced with cellulose nanofibers.

榊原桃, 多田直哉, 上森武, 坂本惇司, 石田諭史, 岩本伸一朗

日本機械学会年次大会講演論文集(CD-ROM) 2020

Evaluation of Fatigue Characteristics of Ti-6Al-4V Alloy Thin Wire

築原京香, 坂本惇司, 多田直哉, 上森武, 島田侑紀

日本機械学会年次大会講演論文集(CD-ROM) 2020

Evaluation of Joint Strength between Pure Titanium with Different Surface Properties and High-Density Polyethylene by Tensile Shear Test

萱嶋千紘, 多田直哉, 上森武, 坂本惇司, 西川紘平

日本機械学会年次大会講演論文集(CD-ROM) 2020

Analysis of Relationship between Potential Difference and Fiber Distribution inside CFRP Focusing on the Current Path

河本詳平, 多田直哉, 上森武, 坂本惇司

日本機械学会年次大会講演論文集(CD-ROM) 2020

Study on the Relationship between Surface Roughness, Residual Stress, and Fatigue Life of High Speed Tool Steel with Precision Shot Peening and Polishing

川西志朗, 多田直哉, 上森武, 坂本惇司, KARUNATHILAKA Nuwan

日本機械学会年次大会講演論文集(CD-ROM) 2020

Fatigue strength evaluation of aluminum alloy under multiaxial random vibration

SAKAMOTO Junji, YAMADA Tomoka, TADA Naoya, UEMORI Takeshi, SHIBUTANI Tadahiro

The Proceedings of the Materials and Mechanics Conference 2019.11.4 The Japan Society of Mechanical Engineers

Event date： 2019.11.2 - 2019.11.4

Language：Japanese Presentation type：Oral presentation (general)

<p>Various mechanical components are subjected to random multiaxial vibration. For their safe and effective operation, it is essential to precisely evaluate the fatigue strength of the materials under multiaxial random vibration. However, the mechanisms and evaluation methods remain unclear. In this study, we performed the multiaxial random vibration experiments using aluminum alloy A5056 specimens in order to discuss a method for evaluating the vibration fatigue strength of materials. The multiaxial random vibration experiments were conducted at an acceleration input of 70 G_rms within a frequency band of 10–5000 Hz under a nitrogen gas environment at a room temperature. During the multiaxial random vibration experiments the strains of the specimen were measured using 3-axis and 1-axis strain gauges and the maximum principal strains and their directions of a fracture part were estimated. Based on the results, the method for evaluating the vibration fatigue strength of materials was discussed.</p>

researchmap

オーステナイト系ステンレス鋼XM-19の疲労強度と破面解析

坂本惇司, 山本翔太, 澁谷忠弘, 志賀優多, 竹花立美, 佐野尊

構造物の安全性および信頼性(CD-ROM) 2019.10

Study on Defect Detection Method using Surface Height Change due to Low Loading

SAKAMOTO Junji, KUNIYASU Hayato, TADA Naoya, UEMORI Takeshi

The Proceedings of Mechanical Engineering Congress, Japan 2019.9.9 The Japan Society of Mechanical Engineers

　 PREV - NEXT 　

< SAKAMOTO Junji >

Presentations -