Sakamoto Junji 坂本惇司

Researcher Number	50752052
Other IDs
Affiliation (Current)	2025: 岡山大学, 環境生命自然科学学域, 助教
Affiliation (based on the past Project Information) *help	2023 – 2024: 岡山大学, 環境生命自然科学学域, 助教 2021 – 2022: 岡山大学, 自然科学学域, 助教 2018 – 2020: 岡山大学, 自然科学研究科, 助教 2017: 横浜国立大学, 先端科学高等研究院, 特任教員(助教)
Review Section/Research Field	Principal Investigator Basic Section 18010:Mechanics of materials and materials-related / Materials/Mechanics of materials Except Principal Investigator Basic Section 18010:Mechanics of materials and materials-related
Keywords	Principal Investigator 共振 / 長寿命化 / 非破壊検査 / き裂 / 振動モード / 振動疲労 / 試験方法 / 振動周波数 / 振動 / せん断 … More / ピーニング / 固有振動数 / 伸び / き裂進展 / 疲労 / 曲げ振動 / アルミニウム合金 / 非比例負荷 / 多軸ランダム振動 / 疲労損傷 … More Except Principal Investigator 純チタン / 破壊 / 変形の局所化 / 不均一変形 / チタン合金 / 表面あれ / 多結晶金属材料 / 表面高度分布 / 塑性不均一変形 / 弾性不均一変形 Less

Development of non-destructive inspection and life extension methods using vibration mode change caused by material damagePrincipal Investigator
- Principal Investigator
  
  坂本惇司
- Project Period (FY)
  2024 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 18010:Mechanics of materials and materials-related
- Research Institution
  Okayama University
Prediction of deformation localization and fracture in polycrystalline titanium alloy based on 3D measurement of ultra-small inhomogeneous deformation
- Principal Investigator
  
  Tada Naoya
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 18010:Mechanics of materials and materials-related
- Research Institution
  Okayama University
Investigation of vibration fatigue crack growth behavior and vibration fatigue strength improvement by peeningPrincipal Investigator
- Principal Investigator
  
  Sakamoto Junji
- Project Period (FY)
  2020 – 2022
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 18010:Mechanics of materials and materials-related
- Research Institution
  Okayama University
Prediction of Development of Inhomogeneous Plastic Deformation and Fracture Based on Change in Elastic Height Distribution in Polycrystalline Metals
- Principal Investigator
  
  Tada Naoya
- Project Period (FY)
  2018 – 2020
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 18010:Mechanics of materials and materials-related
- Research Institution
  Okayama University
Mechanism of fatigue damage of materials under six-axial random vibration and evaluation testing methodPrincipal Investigator
- Principal Investigator
  
  Sakamoto Junji
- Project Period (FY)
  2017 – 2019
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Materials/Mechanics of materials
- Research Institution
  Okayama University
  Yokohama National University

All 2024 2023 2022 2021 2020 2019 2018 2017

All Journal Article Presentation

[Journal Article] Tensile properties and slip deformation behavior of pure titanium thin wire with a small diameter-to-grain-size ratio2023
- Author(s)
  Junji Sakamoto, Naoya Tada, Takeshi Uemori
- Journal Title
  
  Materials Science and Engineering A
  
  Volume: 863 Pages: 144532-144532
- DOI
  10.1016/j.msea.2022.144532
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21H01214
[Journal Article] Prediction of slip activity of crystal grains around semi-circular and semi-elliptical notches in thin-sheet specimens of pure titanium using formulated macroscopic stress distribution and crystal orientation2023
- Author(s)
  Naoya Tada, Takeshi Uemori, Junji Sakamoto
- Journal Title
  
  Engineering Failure Analysis
  
  Volume: 153 Pages: 107623-107623
- DOI
  10.1016/j.engfailanal.2023.107623
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21H01214
[Journal Article] Prediction of the Fracture Location by Tensile Tests of Gray Cast Iron Based on the Dimensional Changes of Graphite Flakes2021
- Author(s)
  Naoya Tada, Takeshi Uemori, Junji Sakamoto
- Journal Title
  
  Transactions of the ASME, Journal of Pressure Vessel Technology
  
  Volume: 143 Issue: 2 Pages: 1-8
- DOI
  10.1115/1.4048063
- NAID
  120007161126
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H01337
[Journal Article] Analysis of the change of direct current potential difference and diameter distribution of thin pure titanium wire subjected to tensile and fatigue loads for fracture prediction2020
- Author(s)
  坂本惇司，高木佑輔，上森武，多田直哉
- Journal Title
  
  Transactions of the JSME (in Japanese)
  
  Volume: 86 Issue: 882 Pages: 19-00351-19-00351
- DOI
  10.1299/transjsme.19-00351
- NAID
  130007801826
- ISSN
  2187-9761
- Language
  Japanese
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18H01337
[Journal Article] Finite Element Study of the Effect of Internal Crack on Surface Profile Change due to Low Loading of Turbine Blade2020
- Author(s)
  Junji Sakamoto, Naoya Tada, Takeshi Uemori, Hayato Kuniyasu
- Journal Title
  
  Applied Sciences
  
  Volume: 10 Issue: 14 Pages: 1-14
- DOI
  10.3390/app10144883
- NAID
  120006877907
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18H01337
[Journal Article] Analysis of fatigue damage of aluminium alloy under multiaxial random vibration2018
- Author(s)
  Junji Sakamoto, Tadahiro Shibutani
- Journal Title
  
  Procedia Structural Integrity
  
  Volume: 13 Pages: 529-534
- DOI
  10.1016/j.prostr.2018.12.087
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 純チタン薄膜試験片の繰返し引張試験における除荷後の結晶方位変化と表面高度変化の関係2024
- Author(s)
  大橋弘晃，多田直哉，上森武，坂本惇司
- Organizer
  日本機械学会中国四国支部第62期総会・講演会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 純チタン細線の引張特性に及ぼす結晶粒径の影響についての検討2024
- Author(s)
  田中洸多，坂本惇司，多田直哉，上森武，大石滉葉
- Organizer
  日本機械学会中国四国支部第62期総会・講演会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 結晶塑性有限要素解析による多結晶純チタン薄膜の活動すべり系予測2023
- Author(s)
  土居雅利，上森武，多田直哉，坂本惇司
- Organizer
  日本機械学会中国四国支部第61期総会・講演会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] Prediction of active slip system for commercially pure titanium sheet by crystal plasticity finite element analysis2023
- Author(s)
  Takeshi UEMORI, Naoya TADA, Junji SAKAMOTO, Masatoshi DOI
- Organizer
  The Advanced Technology in Experimental Mechanics and International DIC Society Joint Conference 2023 (ATEM-iDICs '23)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] Effect of artificial defect on tensile properties of thin titanium alloy wire2023
- Author(s)
  Koyo OISHI, Junji SAKAMOTO, Naoya TADA, Takeshi UEMORI
- Organizer
  The Advanced Technology in Experimental Mechanics and International DIC Society Joint Conference 2023 (ATEM-iDICs '23)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] Ti-6Al-4V平滑試験片の引張試験における微視的塑性変形から破壊へのプロセス2023
- Author(s)
  丸一紘大，上森武，多田直哉，坂本惇司，緒方隆太
- Organizer
  日本機械学会中国四国支部第61期総会・講演会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 円孔付き純チタン平板試験片の弾性および塑性域引張における結晶粒中心と粒界近傍における表面高度変化2023
- Author(s)
  緒方隆太，多田直哉，上森武，坂本惇司
- Organizer
  日本機械学会M&M2023材料力学カンファレンス
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] アルミニウム合金における曲げ振動時の疲労損傷に関する検討2023
- Author(s)
  坂本惇司，多田直哉，上森武
- Organizer
  日本材料学会第72期学術講演会
- Data Source
  KAKENHI-PROJECT-20K14610
[Presentation] チタン合金の曲げ振動寿命に及ぼす微粒子ピーニングの影響2023
- Author(s)
  畑昂輝，坂本惇司，多田直哉，上森武，杉澤拓海
- Organizer
  日本機械学会中国四国支部第61期講演会
- Data Source
  KAKENHI-PROJECT-20K14610
[Presentation] 純チタン薄膜試験片の段階的荷重増加繰返し引張試験における除荷後の結晶方位と表面高度の変化2023
- Author(s)
  大橋弘晃，多田直哉，上森武，坂本惇司
- Organizer
  日本機械学会M&M2023材料力学カンファレンス
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] Microscopic Deformation of Thin Sheet of Polycrystalline Pure Titanium Under Tension2022
- Author(s)
  Naoya TADA, Kentaro KISHIMOTO, Takeshi Uemori, Junji Sakamoto
- Organizer
  ASME PVP Mini Conference in Japan (PMCJ 2022)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] アルミニウム合金の曲げ振動におけるき裂進展に伴う曲げ振幅の変化とそのき裂進展寿命への影響2022
- Author(s)
  小林大悟，坂本惇司，多田直哉，上森武
- Organizer
  日本材料学会第71期学術講演会
- Data Source
  KAKENHI-PROJECT-20K14610
[Presentation] 多結晶純チタン薄膜の引張における各結晶粒のすべり活動条件に関する検討2022
- Author(s)
  多田直哉，上森武，坂本惇司，石丸恵太
- Organizer
  日本機械学会M&M2022材料力学カンファレンス
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 修正シュミット因子による多結晶純チタン薄膜の活動すべり系予測に関する解析的検討2022
- Author(s)
  土居雅利，上森武，多田直哉，坂本惇司
- Organizer
  軽金属学会中国四国支部第14回講演大会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 微視的残留ひずみ測定による多結晶純チタンの引張変形挙動の検討2022
- Author(s)
  松本大樹，多田直哉，坂本惇司，上森武，石丸恵太
- Organizer
  日本機械学会中国四国支部第60期総会・講演会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 純チタン薄膜試験片の引張における不均一弾性応力分布と活動すべり系の関係2022
- Author(s)
  石丸恵太，多田直哉，坂本惇司，上森武，松本大樹
- Organizer
  日本機械学会中国四国支部第60期総会・講演会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] Slip Activity of Crystal Grains around Notch in Thin Sheet Specimen of Pure Titanium2022
- Author(s)
  Naoya Tada, Takeshi Uemori, Junji Sakamoto
- Organizer
  17th Asia-Pacific Conference on Fracture and Strength and 13th Conference on Structural Integrity and Failure (APCFS/SIF 2022)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 疲労初期段階の表面高度変化を用いた純チタンの疲労き裂発生箇所の予測の検討2021
- Author(s)
  彭安瑞，多田直哉，坂本惇司，上森武
- Organizer
  軽金属学会中国四国支部第13回講演大会
- Data Source
  KAKENHI-PROJECT-21H01214
[Presentation] 切欠きを有する純チタン薄膜試験片の引張に伴う結晶粒のすべり変形挙動に関する検2021
- Author(s)
  石田諭史，多田直哉，上森武，坂本惇司，石丸恵太
- Organizer
  日本機械学会中国四国支部第59期総会・講演会
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] 多軸ランダム振動を受ける材料の疲労寿命2020
- Author(s)
  坂本惇司
- Organizer
  日本金属学会・日本鉄鋼協会中国四国支部第47回若手フォーラム
- Invited
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 多結晶純チタンの繰返し引張後の微視的残留応力とすべり線の関係2020
- Author(s)
  松本大樹，多田直哉，上森武，坂本惇司
- Organizer
  日本材料学会第6回材料WEEK材料シンポジウム
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] 多軸ランダム振動下のA5056アルミニウム合金の疲労寿命予測2020
- Author(s)
  山田朋佳、坂本惇司、多田直哉、上森武
- Organizer
  日本金属学会・日本鉄鋼協会中国四国支部第47回若手フォーラム
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] Microscopic Deformation of Thin Sheet of Polycrystalline Pure Titanium Under Tension2020
- Author(s)
  Naoya TADA, Kentaro KISHIMOTO, Takeshi Uemori, Junji Sakamoto
- Organizer
  ASME 2020 Pressure Vessels and Piping Conference (PVP2020)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] 多軸ランダム振動を受ける材料の疲労損傷とは？2019
- Author(s)
  坂本惇司
- Organizer
  日本機械学会「中国四国機素潤滑設計技術研究会」第72回「中国四国支部MD&T研究会」第70回
- Invited
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 六軸ランダム振動による疲労破壊2019
- Author(s)
  坂本惇司
- Organizer
  機能限界加速試験による高品質設計技術コンソーシアム公開シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 多軸ランダム振動下のアルミニウム合金の応力場とそれに及ぼすショットピーニングの影響2019
- Author(s)
  坂本惇司
- Organizer
  日本材料学会第68期学術講演会
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 低荷重負荷による表面性状変化を用いた内在欠陥の検出2019
- Author(s)
  坂本惇司，國安隼人，多田直哉，上森武
- Organizer
  日本機械学会材料力学部門M&M若手シンポジウム2019
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] 多軸ランダム振動によるA5056アルミニウム合金の疲労破壊挙動2019
- Author(s)
  山田朋佳、坂本惇司、多田直哉、上森武
- Organizer
  日本塑性加工学会中国四国支部第20回学生研究発表会
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 多軸ランダム振動下のアルミニウム合金の疲労強度評価2019
- Author(s)
  坂本惇司、山田朋佳、多田直哉、上森武、澁谷忠弘
- Organizer
  日本機械学会M&M2019材料力学カンファレンス
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 純チタン薄膜の引張変形に伴う表面と裏面の微視的高度分布の関係2019
- Author(s)
  岸本健太郎，多田直哉，上森武，坂本惇司
- Organizer
  日本材料学会第5回材料WEEK材料シンポジウム
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] Slip Deformation of Crystal Grains in Semi-Circular Notched Thin Sheet Specimen of Pure Titanium during Tensile Test2019
- Author(s)
  Takashi Ishida, Naoya Tada, Takeshi Uemori, Junji Sakamoto
- Organizer
  International Conference on Advanced Technology in Experimental Mechanics 2019 (ATEM ‘19)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] 多結晶純チタンの引張りにおける結晶方位変化を考慮に入れた微視的すべり変形の評価2019
- Author(s)
  佐藤宏樹，多田直哉，上森武，坂本惇司
- Organizer
  日本金属学会2019年春期(第164回)講演大会
- Data Source
  KAKENHI-PROJECT-18H01337
[Presentation] 多軸ランダム振動を受けるアルミニウム合金の疲労破壊挙動2018
- Author(s)
  坂本惇司、澁谷忠弘
- Organizer
  日本材料学会第67期学術講演会
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] Analysis of fatigue damage of aluminium alloy under multiaxial random vibration2018
- Author(s)
  Junji Sakamoto, Tadahiro Shibutani
- Organizer
  22nd European Conference on Fracture
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14556
[Presentation] 多軸ランダム振動下の材料の応力場の算出方法の検討2017
- Author(s)
  坂本惇司、澁谷忠弘
- Organizer
  2017年度春季ばね及び復元力応用講演会
- Data Source
  KAKENHI-PROJECT-17K14556

1. Tada Naoya (70243053)

# of Collaborated Projects: 2 results

# of Collaborated Products: 26 results
2. 上森武 (70335701)

# of Collaborated Projects: 2 results

# of Collaborated Products: 26 results

Sakamoto Junji 坂本 惇司

Research Projects

Research Products

Co-Researchers

Development of non-destructive inspection and life extension methods using vibration mode change caused by material damagePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Prediction of deformation localization and fracture in polycrystalline titanium alloy based on 3D measurement of ultra-small inhomogeneous deformation

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Investigation of vibration fatigue crack growth behavior and vibration fatigue strength improvement by peeningPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Prediction of Development of Inhomogeneous Plastic Deformation and Fracture Based on Change in Elastic Height Distribution in Polycrystalline Metals

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Mechanism of fatigue damage of materials under six-axial random vibration and evaluation testing methodPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Tensile properties and slip deformation behavior of pure titanium thin wire with a small diameter-to-grain-size ratio2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Prediction of slip activity of crystal grains around semi-circular and semi-elliptical notches in thin-sheet specimens of pure titanium using formulated macroscopic stress distribution and crystal orientation2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Prediction of the Fracture Location by Tensile Tests of Gray Cast Iron Based on the Dimensional Changes of Graphite Flakes2021

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Analysis of the change of direct current potential difference and diameter distribution of thin pure titanium wire subjected to tensile and fatigue loads for fracture prediction2020

Author(s)

Journal Title

DOI

NAID

ISSN

Language

Data Source

[Journal Article] Finite Element Study of the Effect of Internal Crack on Surface Profile Change due to Low Loading of Turbine Blade2020

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Analysis of fatigue damage of aluminium alloy under multiaxial random vibration2018

Author(s)

Journal Title

DOI

Data Source

[Presentation] 純チタン薄膜試験片の繰返し引張試験における除荷後の結晶方位変化と表面高度変化の関係2024

Author(s)

Organizer

Data Source

[Presentation] 純チタン細線の引張特性に及ぼす結晶粒径の影響についての検討2024

Author(s)

Organizer

Data Source

[Presentation] 結晶塑性有限要素解析による多結晶純チタン薄膜の活動すべり系予測2023

Author(s)

Organizer

Sakamoto Junji 坂本惇司