Yokohama National University   Center for Creation of Symbiosis Society with Risk   Assistant Professor

2015.10 - 2017.5

Yokohama National University   Center for Risk Management and Safety Sciences   Researcher

2014.11 - 2015.9

Seoul National University of Science and Technology   Department of Mechanical & Automotive Engineering

2013.5 - 2014.10

Kyushu University   Department of Mechanical Engineering

2013.4 - 2013.8

Relationship between cyclic tensile properties of cellulose nanofiber reinforced natural rubber and volume fraction of bound rubber obtained from swelling tests Reviewed

OKUI Kento, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, SAKAKIBARA Keita

Transactions of the JSME (in Japanese)   90 ( 932 )   24-00008 - 24-00008   2024.4

Vibration change and crack propagation under bending vibration of aluminum alloy Reviewed

SAKAMOTO Junji, TADA Naoya, UEMORI Takeshi

Transactions of the JSME (in Japanese)   90 ( 930 )   23-00246 - 23-00246   2024.2

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 orientation Reviewed

Naoya Tada, Takeshi Uemori, Junji Sakamoto

Engineering Failure Analysis   107623 - 107623   2023.9

Tensile properties and slip deformation behavior of pure titanium thin wire with a small diameter-to-grain-size ratio Reviewed

Junji Sakamoto, Naoya Tada, Takeshi Uemori

Materials Science and Engineering A   863   144532   2023.1

Application of Complex-Step Derivative Approximation Method to Crystal Plasticity Analysis of Commercially Pure Titanium Sheet

上森武, 多田直哉, 坂本惇司

チタン   70 ( 2 )   158 - 163   2022.4

Effect of mechanical surface treatment and post-treatment polishing on tensile strength and fatigue life of high-speed tool steel Reviewed

N. Karunathilaka, N. Tada, T. Uemori, J. Sakamoto, R. Hamamitsu, M. Fujii, Y. Omiya, M. Kawano

International Journal of Peening Science and Technology   2 ( 1 )   35 - 60   2022

Effect of resin lamination on tensile strength characteristics of SUS304 stainless steel thin film Reviewed

Junji Sakamoto, Naoya Tada, Takeshi Uemori

The International Journal of Advanced Manufacturing Technology   116 ( 3-4 )   1081 - 1088   2021.9

Prediction of the fracture location by tensile tests of gray cast iron based on the dimensional changes of graphite flakes

Naoya Tada, Takeshi Uemori, Junji Sakamoto

Journal of Pressure Vessel Technology, Transactions of the ASME   143 ( 2 )   2021.4

Finite element study of the effect of internal cracks on surface profile change due to low loading of turbine blade Reviewed

Junji Sakamoto, Naoya Tada, Takeshi Uemori, Hayato Kuniyasu

Applied Sciences (Switzerland)   10 ( 14 )   4883 - 4883   2020.7

Leak frequency analysis for hydrogen-based technology using bayesian and frequentist methods Reviewed

Mahesh Kodoth, Shu Aoyama, Junji Sakamoto, Naoya Kasai, Yehia Khalil, Tadahiro Shibutani, Atsumi Miyake

Process Safety and Environmental Protection   136   148 - 156   2020.4

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 prediction Reviewed

SAKAMOTO Junji, TAKAGI Yusuke, UEMORI Takeshi, TADA Naoya

Transactions of the JSME (in Japanese)   86 ( 882 )   19 - 00351-19-00351   2020.2

How knowledge about or experience with hydrogen fueling stations improves their public acceptance Reviewed

Shunichi Hienuki, Yoshie Hirayama, Tadahiro Shibutani, Junji Sakamoto, Jo Nakayama, Atsumi Miyake

Sustainability (Switzerland)   11 ( 22 )   6339 - 6339   2019.11

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 Reviewed

坂本惇司, 山本翔太, 澁谷忠弘, 志賀優多, 竹花立美, 佐野尊

JCOSSAR2019論文集   9   2019.10

Prediction of fracture location in tensile test of short-fiber-self-reinforced polyethylene composite plates Reviewed

Naoya Tada, Ming Jin, Takeshi Uemori, Junji Sakamoto

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP   3   2019

Analysis of fatigue damage of aluminium alloy under multiaxial random vibration Reviewed

Junji Sakamoto, Tadahiro Shibutani

Procedia Structural Integrity   13   529 - 534   2018.12

Evaluating uncertainty in accident rate estimation at hydrogen refueling station using time correlation model Reviewed

Mahesh Kodoth, Shu Aoyama, Junji Sakamoto, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

International Journal of Hydrogen Energy   43 ( 52 )   23409 - 23417   2018.12

Evaluation of safety measures of a hydrogen fueling station using physical modeling Reviewed

Junji Sakamoto, Hitoshi Misono, Jo Nakayama, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

Sustainability (Switzerland)   10 ( 11 )   3846 - 3846   2018.10

Potential failure mode identification of operational amplifier circuit board by using high accelerated limit test Reviewed

Junji Sakamoto, Ryoma Hirata, Tadahiro Shibutani

Microelectronics Reliability   85   19 - 24   2018.6

Effects of the shape of small flaws and damage due to a focused ion beam on the fatigue strength characteristics of annealed medium‑carbon steel Reviewed

Junji Sakamoto, Shigeru Hamada, Hiroshi Noguchi

Engineering Failure Analysis   87   49 - 68   2018.5

Risk assessment of hydrogen fueling station and its implementation to society

三宅 淳巳, 坂本 惇司

空気清浄 : コンタミネーションコントロール   55 ( 5 )   311 - 318   2018

Applying a comprehensive societal risk framework to hydrogen fueling stations

Atsumi Miyake, Junji Sakamoto, Shunichi Hienuki, Jo Nakayama, Yu Ichiro Izato, Kazuhiko Noguchi

Global Congress on Process Safety 2018, GCPS 2018 - Topical Conference at the 2018 AIChE Spring Meeting and 14th Global Congress on Process Safety   4   2538 - 2547   2018

Finite element analysis of thermal and mechanical stresses due to the grain anisotropy of polycrystalline beta-Sn Reviewed

Junji Sakamoto, Hisakazu Ohara, Tadahiro Shibutani

MICROELECTRONICS RELIABILITY   71   29 - 34   2017.4

Simulation-based safety investigation of a hydrogen fueling station with an on-site hydrogen production system involving methylcyclohexane Reviewed

Jo Nakayama, Hitoshi Misono, Junji Sakamoto, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

International Journal of Hydrogen Energy   42 ( 15 )   10636 - 10644   2017.4

Safety assessment of hydrogen energy carrier from a perspective of social comprehensive risk

中山 穣, 稗貫 峻一, 坂本 惇司, 笠井 尚哉, 澁谷 忠弘, 野口 和彦, 三宅 淳巳

水素エネルギーシステム = Journal of the Hydrogen Energy Systems Society of Japan   42 ( 3 )   138 - 144   2017

Leakage-type-based analysis of accidents involving hydrogen fueling stations in Japan and USA Reviewed

Junji Sakamoto, Ryunosuke Sato, Jo Nakayama, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

International Journal of Hydrogen Energy   41 ( 46 )   21564 - 21570   2016.12

Preliminary hazard identification for qualitative risk assessment on a hybrid gasoline-hydrogen fueling station with an on-site hydrogen production system using organic chemical hydride Reviewed

Jo Nakayama, Junji Sakamoto, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

International Journal of Hydrogen Energy   41 ( 18 )   7518 - 7525   2016.5

Effect of gasoline pool fire on liquid hydrogen storage tank in hybrid hydrogen-gasoline fueling station Reviewed

Junji Sakamoto, Jo Nakayama, Toyoaki Nakarai, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

International Journal of Hydrogen Energy   41 ( 3 )   2096 - 2104   2016.1

Risk assessment for a gas and liquid Hydrogen fueling station Reviewed

Jo Nakayama, Junji Sakamoto, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake

49th Annual Loss Prevention Symposium 2015, LPS 2015 - Topical Conference at the 2015 AIChE Spring Meeting and 11th Global Congress on Process Safety   138 - 150   2015.1

Effect of surface flaw on fatigue strength of shot-peened medium-carbon steel Reviewed

Junji Sakamoto, Yong-Sung Lee, Seong-Kyun Cheong

Engineering Fracture Mechanics   133   99 - 111   2015.1

Effect of shot peening coverage on fatigue limit in round bar of annealed medium carbon steel Reviewed

Junji Sakamoto, Yong-Sung Lee, Seong-Kyun Cheong

Journal of Mechanical Science and Technology   28 ( 9 )   3555 - 3560   2014.9

Role of eutectic silicon particles in fatigue crack initiation and propagation and fatigue strength characteristics of cast aluminum alloy A356 Reviewed

Lei Zeng, Junji Sakamoto, Atsushi Fujii, Hiroshi Noguchi

Engineering Fracture Mechanics   115   1 - 12   2014.1

Method for Assessing Applicability of an Artificial Flaw as a Small Initial Crack for Fatigue Limit Evaluation and Its Application to a Drill Hole and an FIB Processed Sharp Notch in Annealed 0.45% Carbon Steel Reviewed

Junji Sakamoto, Yoshimasa Takahashi, Yuuta Aono, Hiroshi Noguchi

Journal of Testing and Evaluation   41 ( 2 )   194 - 199   2013.3

Small fatigue crack growth behavior from artificial notch with focused ion beam in annealed 0.45% carbon steel Reviewed

Junji Sakamoto, Yoshimasa Takahashi, Hiroshi Noguchi

Key Engineering Materials   488-489   319 - +   2011.9

Effect of hydrogen on dislocation structures around a mixed-mode fatigue crack tip in a single-crystalline iron silicon alloy Reviewed

Yoshimasa Takahashi, Junji Sakamoto, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Scripta Materialia   64 ( 8 )   721 - 724   2011.4

Characterization of dislocation structures around a mixed-mode fatigue crack tip in a single-crystalline iron-silicon alloy Reviewed

Yoshimasa Takahashi, Junji Sakamoto, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Scripta Materialia   64 ( 2 )   157 - 160   2011.1

TEM analysis on the effect of hydrogen on cyclic deformation around an oblique fatigue crack tip in single-crystalline Fe-3.2wt.%Si alloy Reviewed

Yoshimasa Takahashi, Junji Sakamoto, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   76 ( 767 )   1002 - 1004   2010.7

TEM observation of cyclic deformation around an oblique fatigue crack tip in single-crystalline fe-3.2wt.%si alloy Reviewed

Yoshimasa Takahashi, Junji Sakamoto, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   76 ( 762 )   251 - 253   2010.2

Effect of gaseous hydrogen on cyclic slip behavior around a stage i fatigue crack tip in an iron alloy Reviewed

Takahashi Y, Sakamoto J, Tanaka M, Higashida K, Noguchi H

18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale   2010

Effect of Carbon Fibers on Tensile Properties of Onyx Specimens with Circular Hole Fabricated by 3D Printer

田中亮至, 多田直哉, 上森武, 坂本惇司, 池田皇士郎

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2024 

Microscopic Deformation of Contact Surface in Pressure Test of Pure Aluminum Small Block

前田春輝, 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)  2024 

Study on Joining Aluminum Alloy and Aluminum-Plated Steel by Forging

千田亮, 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)  2024 

Observation of Surface Profile Change and Estimation of Contact Area Ratio in High Contact Pressure Tests of Small Pure Aluminum Blocks

中村怜司, 多田直哉, 上森武, 坂本惇司, 福本学

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2024 

Relationship between Crystal Orientation Change and Surface Height Change during Cyclic Tension of Pure Titanium Thin Sheet Specimen after Unloading

大橋弘晃, 多田直哉, 上森武, 坂本惇司, 長谷川博章

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2024 

純アルミニウム薄膜の引張変形に及ぼす接着剤スポットの影響

池田皇士郎, 多田直哉, 上森武, 坂本惇司

日本金属学会講演大会(Web)  2024 

Study on method for predicting crack size using amplitude change in titanium alloy under bending vibration

坂本惇司, 多田直哉, 上森武

日本材料学会学術講演会講演論文集(CD-ROM)  2024 

Investigation on Deformation Constraint Near Fiber/Rubber Interface in Cellulose-Nanofiber-Reinforced Natural Rubber by Swelling Test

奥井健斗, 多田直哉, 上森武, 坂本惇司, 増田廉, 榊原圭太

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2023 

Study on Fatigue Damage under Bending Vibration in Aluminum Alloy

坂本惇司, 多田直哉, 上森武

日本材料学会学術講演会講演論文集(CD-ROM)  2023 

Surface Height Change at Grain Center and Near Grain Boundaries in Pure Titanium Plate Specimen with Circular Notch under Elastic and Plastic Tensions

緒方隆太, 多田直哉, 上森武, 坂本惇司

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2023 

Changes in Crystal Orientation and Surface Height after Unloading in Stepwise Load Increasing Repeated Tensile Test of Pure Titanium Thin Sheet Specimen

大橋弘晃, 多田直哉, 上森武, 坂本惇司

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2023 

Effect of Fine Particle Peening on Bending Vibration Life of Titanium Alloy

畑昂輝, 坂本惇司, 多田直哉, 上森武, 杉澤拓海

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2023 

Predictions of active slip system in polycrystalline pure titanium thin film using crystal plasticity finite element analysis

土居雅利, 上森武, 多田直哉, 坂本惇司

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2023 

Microscopic Plastic Deformation and Fracture Processes in Smooth Specimen of Ti-6Al-4V during Tensile Test

丸一紘大, 多田直哉, 上森武, 坂本惇司, 緒方隆太

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2023 

Investigation on the Interface Bonding Strength of Fe-Al Joint Specimens Made by Forging

両保侑希, 多田直哉, 上森武, 坂本惇司, 西本泰己, KARUNATHILAKA Nuwan

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2023 

Change in bending amplitude with crack growth and its effect on crack propagation life in bending vibration of aluminum alloy

小林大悟, 坂本惇司, 多田直哉, 上森武

日本材料学会学術講演会講演論文集(CD-ROM)  2022 

Evaluation of Early Fatigue Damage of CFRP Laminates by DC Potential Difference Method

KOMOTO Shohei, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, NAKAMURA Shunji, SAKURAI Kaori, TAKANASHI Masahiro

The Proceedings of Conference of Chugoku-Shikoku Branch  2022  The Japan Society of Mechanical Engineers

Effect of Titanium Dioxide Particle Content on Tensile Properties of Ultra-High Molecular Weight Polyethylene/Titanium Dioxide Composites

丸一紘大, 多田直哉, 上森武, 坂本惇司, 田中亮至

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2022 

二相組織材料に発生する不均一応力が等塑性仕事曲面に与える影響に関する均質化有限要素解析

稲毛駿介, 上森武, 多田直哉, 坂本惇司

塑性加工連合講演会講演論文集(CD-ROM)  2022 

Slip Activation Condition for Each Crystal Grain in Thin Sheet of Polycrystalline Pure Titanium under Tension

多田直哉, 上森武, 坂本惇司, 石丸恵太

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2022 

Observation of Pull-out and Fracture Behaviour of Fibers in Cracked Specimen of Natural Rubber Reinforced with Cellulose Nanofibers during Tension

SAKAKIBARA Momo, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, OKUI Kento, SAKAKIBARA Keita

The Proceedings of Conference of Chugoku-Shikoku Branch  2022  The Japan Society of Mechanical Engineers

Changes in Diameter and Nominal Strain of Ti-6Al-4V Alloy Thin Wire under Fatigue Loading

TSUKIHARA Kyoka, SAKAMOTO Junji, TADA Naoya, UEMORI Takeshi, OISHI Koyo

The Proceedings of Conference of Chugoku-Shikoku Branch  2022  The Japan Society of Mechanical Engineers

Evaluation of Joint Strength between Anodized Pure Titanium and High-Density Polyethylene by Tensile Shear Tests

KAYASHIMA Chihiro, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, MARUICHI Koudai, TANAKA Ryoji

The Proceedings of Conference of Chugoku-Shikoku Branch  2022  The Japan Society of Mechanical Engineers

Study on Tensile Deformation Behavior of Polycrystalline Pure Titanium by Microscopic Residual Strain Measurement

MATSUMOTO Daiki, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, ISHIMARU Keita

The Proceedings of Conference of Chugoku-Shikoku Branch  2022  The Japan Society of Mechanical Engineers

Relationship between Inhomogeneous Elastic Stress Distribution and Activated Slip System in Thin Sheet Specimen of Pure Titanium during Tension

ISHIMARU Keita, TADA Naoya, UEMORI Takeshi, SAKAMOTO Junji, MATSUMOTO Daiki

The Proceedings of Conference of Chugoku-Shikoku Branch  2022  The Japan Society of Mechanical Engineers

Effect of Cyclic Bending Deformation on Tensile Strength of Aluminum Foil

田辺太一, 多田直哉, 上森武, 坂本惇司, 白神修

日本材料学会学術講演会講演論文集(CD-ROM)  2021.5.30 

Observation of slip lines of pure titanium thin wire in stepwise tensile test

坂本惇司, 島田侑紀, 多田直哉, 上森武

日本材料学会学術講演会講演論文集(CD-ROM)  2021.5.29 

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

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

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 

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 

Simple Method for Evaluating Fatigue Life using Cyclic Hardness Test and Its Application to Small Materials

Junji Sakamoto

Annual Report of the Murata Science Foundation  2020.12 

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

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

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

Study on Application of Direct-Current Potential Difference Method to Fatigue of Titanium Alloy Thin Wire

TADA Naoya, TAKAGI Yusuke, SHIMADA Yuki, UEMORI Takeshi, SAKAMOTO Junji

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

Experimental observations of cyclic plastic deformation behaviors of 590MPa class high tensile strength steel sheet and its modeling

UEMORI Takeshi, NAKAMOTO Hiromasa, TADA Naoya, SAKAMOTO Junji

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

振動疲労強度におけるショットピーニングによる表面塑性加工の効果の検討

Report of grant-supported researches the Amada Foundation  2019 

Applying a comprehensive societal risk framework to hydrogen fueling stations

Atsumi Miyake, Junji Sakamoto, Shunichi Hienuki, Jo Nakayama, Yu Ichiro Izato, Kazuhiko Noguchi

Global Congress on Process Safety 2018, GCPS 2018 - Topical Conference at the 2018 AIChE Spring Meeting and 14th Global Congress on Process Safety  2018 

590MPa級DP鋼の繰返し引張‐圧縮試験とその構成モデル

中本浩聖, 上森武, 多田直哉, 坂本惇司, 早川邦夫

材料とプロセス(CD-ROM)  2019.8.26 

引張せん断試験によるアルミニウム合金/高密度ポリエチレンの接合強度評価

多田直哉, 阿部俊太朗, 上森武, 坂本惇司

日本材料学会学術講演会講演論文集  2019.5.24 

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

坂本惇司

日本材料学会学術講演会講演論文集  2019.5.24 

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

佐藤宏樹, 多田直哉, 上森武, 坂本惇司

日本金属学会講演概要(CD-ROM)  2019.3.6 

高張力鋼板の面内繰返し応力‐ひずみ応答に与えるひずみ速度の影響

上森武, 多田直哉, 坂本惇司, 中本浩聖, 早川邦夫

材料とプロセス(CD-ROM)  2019.3.1 

精密ショットピーニング処理と研磨を施した高速度工具鋼の疲労寿命

花光崚太, KARUNATHILAKA Nuwan, 多田直哉, 上森武, 坂本惇司

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM)  2019 

リスク共生設計の提案:極限環境試験を用いた機器の故障モード特定による機器設計

坂本惇司, 澁谷忠弘, 伊里友一朗, 野口和彦, 中山穣, 三宅淳巳

安全工学シンポジウム講演予稿集  2018.7.3 

多軸ランダム振動下のアルミニウム合金の疲労破壊挙動

坂本惇司, 澁谷忠弘

日本材料学会学術講演会講演論文集  2018.5.25 

Qualitative evaluation of hydrogen station with HAZID study

KASAI Naoya, NAKAYAMA Jo, SAKAMOTO Junji, SHIBUTANI Tadahiro, MIYAKE Atsumi

The Proceedings of Mechanical Engineering Congress, Japan  2017.9.5 

Modeling of a hydrogen fueling station using physical modeling and quantitative estimation of hydrogen release based on accident scenarios

SAKAMOTO Junji, MISONO Hitoshi, NAKAYAMA Jo, KASAI Naoya, SHIBUTANI Tadahiro, MIYAKE Atsumi

The Proceedings of Mechanical Engineering Congress, Japan  2017.9.5 

微小傷から発生したき裂の応力場に及ぼす傷形状および微視組織の影響の有限要素解析

坂本惇司, 澁谷忠弘

日本機械学会年次大会講演論文集(CD-ROM)  2016.9.10 

水素スタンドにおける継手からの水素漏洩の検討

佐藤龍之介, 中山穣, 坂本惇司, 笠井尚哉, 澁谷忠弘, 三宅淳巳

日本機械学会年次大会講演論文集(CD-ROM)  2016.9.10 

多結晶体モデルにおける仮想的なマルテンサイト変態導入の検討

山本翔太, 坂本惇司, 澁谷忠弘

日本機械学会年次大会講演論文集(CD-ROM)  2016.9.10 

物理モデリングを用いた水素ステーションにおける緊急時の水素放散法の評価

彌園仁志, 坂本惇司, 中山穣, 笠井尚哉, 澁谷忠弘, 三宅淳巳

日本機械学会年次大会講演論文集(CD-ROM)  2016.9.10 

Analysis of Peeling Behavior and Thermal Stress in Adhesion Strength Test of High Temperature Mold Resin

平田 諒磨, 澁谷 忠弘, 坂本 惇司

マイクロエレクトロニクスシンポジウム論文集  2016.9.8 

有機ハイドライド型水素ステーションにおける蓄圧器に及ぼすプール火災の影響

中山穣, 彌園仁志, 坂本惇司, 半井豊明, 笠井尚哉, 澁谷忠弘, 三宅淳巳

日本火災学会研究発表会概要集  2016.5.11 

液化水素型水素スタンド併設給油取扱所に関するHAZID Studyを用いたSafety Critical Elementsの抽出

中山穣, 坂本惇司, 笠井尚哉, 澁谷忠弘, 三宅淳巳

安全工学研究発表会講演予稿集  2015.12.3 

CNGスタンドにおけるディスペンサー周辺の防爆エリアに関する検討

塩田謙人, 中山穣, 坂本惇司, 熊崎美枝子, 笠井尚哉, 澁谷忠弘, 三宅淳巳

安全工学研究発表会講演予稿集  2015.12.3 

スズおよびスズ銅合金における結晶異方性に基づく熱応力の有限要素解析

坂本惇司, 大原久和, 澁谷忠弘

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2015.11.20 

液化水素型水素スタンド併設給油取扱所におけるガソリン火災時の液化水素貯槽に及ぼす輻射熱の影響

坂本惇司, 中山穣, 半井豊明, 笠井尚哉, 澁谷忠弘, 三宅淳巳

日本機械学会年次大会講演論文集(CD-ROM)  2015.9.12 

液化水素型水素スタンド併設給油取扱所におけるHAZID解析とETAを用いた損傷発生確率の検討

佐藤龍之介, 中山穣, 坂本惇司, 笠井尚哉, 澁谷忠弘, 三宅淳巳

日本機械学会年次大会講演論文集(CD-ROM)  2015.9.12 

S45C焼入れ焼戻し材を用いた欠陥形状が疲労き裂の停留挙動に及ぼす影響の検討

HAMANO YASUAKI, ZAIZEN KENGO, MATSUEDA TAKAHIRO, SAKAMOTO JUNJI, HAMADA SHIGERU, NOGUCHI HIROSHI

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2013.10.10 

Applicability of a FIB-notch as a small initial crack for fatigue limit evaluation

Sakamoto J, Takahashi Y, Noguchi H

19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012  2012.1.1 

FIB加工による人工欠陥を有するS45C焼鈍し材の微小疲労き裂進展挙動

坂本惇司, 高橋可昌, 野口博司

日本機械学会M&M材料力学カンファレンス(CD-ROM)  2011 

Effect of gaseous hydrogen on cyclic slip behavior around a stage i fatigue crack tip in an iron alloy

Takahashi Y, Sakamoto J, Tanaka M, Higashida K, Noguchi H

18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale  2010.12.1 

透過型電子顕微鏡による傾斜疲労き裂先端の微視的すべり挙動におよぼす水素の影響解析

坂本惇司, 高橋可昌, 田中將己, 東田賢二, 野口博司

日本材料学会学術講演会講演論文集  2010.5.21 

Optimization of Shape of Stress-relief Groove for Improvement of Fretting Fatigue Strength

SAKAMOTO JUNJI, KONDO YOSHIYUKI, KUBOTA MASANOBU

日本機械学会年次大会講演論文集  2009.9.12 

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

Grant number：18H01337  2018.04 - 2021.03

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

Tada Naoya

振動疲労強度におけるショットピーニングによる表面塑性加工の効果の検討

2017.10 - 2019.03

公益財団法人天田財団  奨励研究助成B（萌芽的研究） 

坂本 惇司

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

Grant number：17K14556  2017.04 - 2020.03

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

Sakamoto Junji

Research Works for Mechanical and Systems Engineering 2 （2024academic year） Late  - その他

Seminar on Mechanical Engineering 1 （2024academic year） Prophase  - その他

Seminar on Mechanical Engineering 2 （2024academic year） Late  - その他

Advanced Study （2024academic year） Other  - その他

Experiments in Mechanical Engineering （2023academic year） Other  - [第１学期]火5～8, [第２学期]不開講, [第３学期]火5～8, [第４学期]火5～8

Experiments in Mechanical Engineering （2023academic year） Other  - [第１学期]火5～8, [第２学期]不開講, [第３学期]火5～8, [第４学期]火5～8

Experiments in Mechanical EngineeringⅡ （2023academic year） 3rd and 4th semester  - 火5～8

Experiments in Mechanical EngineeringI （2023academic year） 1st semester  - 火5～8

Research Works for Mechanical and Systems Engineering 1 （2023academic year） Prophase  - その他

Research Works for Mechanical and Systems Engineering 2 （2023academic year） Late  - その他

Seminar on Mechanical Engineering 1 （2023academic year） Prophase  - その他

Seminar on Mechanical Engineering 2 （2023academic year） Late  - その他

Advanced Study （2023academic year） Other  - その他

Experiments in Mechanical Engineering （2022academic year） 1st-4th semester  - [第１学期]火5～8, [第２学期]その他, [第３学期]火5～8, [第４学期]火5～8

Experiments in Mechanical EngineeringⅡ （2022academic year） 3rd and 4th semester  - 火5～8

Experiments in Mechanical EngineeringI （2022academic year） 1st semester  - 火5～8

Research Works for Mechanical and Systems Engineering 1 （2022academic year） Prophase  - その他

Research Works for Mechanical and Systems Engineering 2 （2022academic year） Late  - その他

Experiments in Mechanical Engineering （2021academic year） 1st-4th semester  - [第１学期]火5,火6,火7,火8, [第２学期]その他, [第３学期]火5,火6,火7,火8, [第４学期]火5,火6,火7,火8

Experiments in Mechanical Engineering （2021academic year） 1st-4th semester  - [第１学期]火5,火6,火7,火8, [第２学期]その他, [第３学期]火5,火6,火7,火8, [第４学期]火5,火6,火7,火8

Experiments in Mechanical EngineeringⅡ （2021academic year） 3rd and 4th semester  - 火5,火6,火7,火8

Experiments in Mechanical EngineeringI （2021academic year） 1st semester  - 火5,火6,火7,火8

Research Works for Mechanical and Systems Engineering 1 （2021academic year） Prophase  - その他

Research Works for Mechanical and Systems Engineering 2 （2021academic year） Late  - その他

Experiments in Mechanical Engineering （2020academic year） 1st-4th semester  - 火5,火6,火7,火8

Experiments in Mechanical Engineering （2020academic year） 1st-4th semester  - 火5,火6,火7,火8

Experiments in Mechanical EngineeringⅡ （2020academic year） 3rd and 4th semester  - 火5,火6,火7,火8

Experiments in Mechanical EngineeringI （2020academic year） 1st semester  - 火5,火6,火7,火8

Seminar for Mechanical Engineers II （2020academic year） Third semester  - 水5,水6,水7,水8

Seminar for Mechanical and Systems Engineers II （2020academic year） Third semester  - 水5,水6,水7,水8