SADAMATSU Sunao 定松直

Researcher Number	10709554
Other IDs
Affiliation (Current)	2025: 鹿児島大学, 理工学域工学系, 准教授
Affiliation (based on the past Project Information) *help	2019 – 2023: 鹿児島大学, 理工学域工学系, 准教授 2015 – 2018: 鹿児島大学, 理工学域工学系, 助教 2015: 鹿児島大学, 工学部, 助教 2014: 鹿児島大学, 理工学研究科, 助教
Review Section/Research Field	Principal Investigator Basic Section 18010:Mechanics of materials and materials-related / Materials/Mechanics of materials Except Principal Investigator Medium-sized Section 26:Materials engineering and related fields / Structural/Functional materials
Keywords	Principal Investigator 金属強度 / 電子顕微鏡 / 転位 / デジタル画像相関法 / 電子顕微鏡法透過型 / 力学特性 / 転位論 / 材料工学 / 塑性変形 / 脆性-延性遷移 … More / 力学的性質 / 電子線トモグラフィー / 超高圧電子顕微鏡 / 靭性 / 金属物性 / 構造材料 / 亀裂 / 脆性－延性遷移 / 脆性破壊 … More Except Principal Investigator 靭性 / 転位 / 破壊 / 脆化 / 応力遮蔽効果 / 水素 / 転位遮蔽効果 / 亀裂 / 水素脆化 / 破壊靭性 / 遮蔽効果 / き裂 / 水素脆性 / 強度・破壊靭性 / 電子顕微鏡 / 機能・構造材料 / 構造・機能材料 Less

Elucidation of Stress-Strain Response Dominant Factors in Crystalline Materials by Multiscale Strain AnalysisPrincipal Investigator
- Principal Investigator
  
  定松直
- Project Period (FY)
  2023 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 18010:Mechanics of materials and materials-related
- Research Institution
  Kagoshima University
Multi-scale modeling and experimental study for the mechanism of hydrogen embrittlement based on the theory of crack-tip shielding by dislocations
- Principal Investigator
  
  Higashida Kenji
- Project Period (FY)
  2018 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 26:Materials engineering and related fields
- Research Institution
  Kyushu University
  Sasebo National College of Technology
Investigation of multiplication process of crack tip dislocations by 4D-HVEM-tomographPrincipal Investigator
- Principal Investigator
  
  SADAMATSU Sunao
- Project Period (FY)
  2015 – 2017
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Materials/Mechanics of materials
- Research Institution
  Kagoshima University
Study on fracture toughness unifying nanomaterials science and micro fracture mechanics.
- Principal Investigator
  
  Higashida Kenji
- Project Period (FY)
  2014 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Structural/Functional materials
- Research Institution
  Sasebo National College of Technology
  Kyushu University

All 2023 2022 2020 2017 2016 2015

All Journal Article Presentation

[Journal Article] Effect of Crack-tip Shielding by Dislocations on Fracture Toughness – in Relation to Hydrogen Embrittlement –2022
- Author(s)
  Kenji Higashida, Masaki Tanaka, Sunao Sadamatsu
- Journal Title
  
  ISIJ International
  
  Volume: 62 Issue: 10 Pages: 2074-2080
- DOI
  10.2355/isijinternational.ISIJINT-2022-237
- ISSN
  0915-1559, 1347-5460
- Year and Date
  2022-10-15
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18H03848, KAKENHI-PLANNED-18H05451
[Journal Article] Crack-tip Dislocations and Brittle-to-Ductile Transition2017
- Author(s)
  田中將己、定松直、東田賢二
- Journal Title
  
  Materia Japan
  
  Volume: 56 Issue: 10 Pages: 597-603
- DOI
  10.2320/materia.56.597
- NAID
  130006109915
- ISSN
  1340-2625, 1884-5843
- Language
  Japanese
- Data Source
  KAKENHI-PROJECT-26249106, KAKENHI-PROJECT-15H04147
[Journal Article] Transmission electron microscopy of bulk specimens over 10 μm in thickness2016
- Author(s)
  S. Sadamatsu, M. Tanaka, K. Higashida, S. Matsumura
- Journal Title
  
  Ultramicroscopy
  
  Volume: 162 Pages: 10-16
- DOI
  10.1016/j.ultramic.2015.09.001
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26249106
[Journal Article] Observation of Dislocations in Thick Specimens Using by The High-Voltage Electron Microscopy with an Energy Filter2016
- Author(s)
  定松直, 田中將己, 東田賢二, 松村晶
- Journal Title
  
  Materia Japan
  
  Volume: 55 Issue: 12 Pages: 597-597
- DOI
  10.2320/materia.55.597
- NAID
  130005170145
- ISSN
  1340-2625, 1884-5843
- Language
  Japanese
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26249106, KAKENHI-PROJECT-15H04147
[Presentation] リューダース変形する鉄鋼材料の微視的不均一変形2023
- Author(s)
  定松直
- Organizer
  日本鉄鋼協会
- Data Source
  KAKENHI-PROJECT-23K03578
[Presentation] 応力遮蔽理論に基づく亀裂先端転位増殖機構2020
- Author(s)
  田中將己, 定松直,
- Organizer
  MRM Forum 2020
- Data Source
  KAKENHI-PROJECT-18H03848
[Presentation] HVEMによるSi単結晶中の亀裂先端転位群の三次元構造解析2017
- Author(s)
  山崎俊二，定松直
- Organizer
  平成29年度　合同学術講演大会
- Data Source
  KAKENHI-PROJECT-15K21250
[Presentation] 超高圧電子顕微鏡を用いたSi単結晶中亀裂先端転位群の三次元構造解析2017
- Author(s)
  山崎俊二，定松直
- Organizer
  金属学会2017年秋季講演大会
- Data Source
  KAKENHI-PROJECT-15K21250
[Presentation] 超高圧電子顕微鏡によるSi結晶中の亀裂先端転位三次元構造解析2015
- Author(s)
  田中將己, 定松直, 東田賢二
- Organizer
  日本学術振興会第161委員会第90回研究会
- Place of Presentation
  九州大学
- Year and Date
  2015-03-05
- Data Source
  KAKENHI-PROJECT-26249106

1. Higashida Kenji (70156561)

# of Collaborated Projects: 2 results

# of Collaborated Products: 2 results
2. SHIMOKAWA Tomotsugu (40361977)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. 田中將己 (40452809)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
4. MATSUMURA Syo (60150520)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
5. YAMAGUCHI Masatake (50360417)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 森川龍哉 (00274506)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 西口廣志 (00580862)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 川崎仁晴 (10253494)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 大橋鉄也 (80312445)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. YAMAZAKI Syunji

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results

SADAMATSU Sunao 定松 直

Research Projects

Research Products

Co-Researchers

Elucidation of Stress-Strain Response Dominant Factors in Crystalline Materials by Multiscale Strain AnalysisPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Multi-scale modeling and experimental study for the mechanism of hydrogen embrittlement based on the theory of crack-tip shielding by dislocations

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Investigation of multiplication process of crack tip dislocations by 4D-HVEM-tomographPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Study on fracture toughness unifying nanomaterials science and micro fracture mechanics.

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Effect of Crack-tip Shielding by Dislocations on Fracture Toughness – in Relation to Hydrogen Embrittlement –2022

Author(s)

Journal Title

DOI

ISSN

Year and Date

Language

Data Source

[Journal Article] Crack-tip Dislocations and Brittle-to-Ductile Transition2017

Author(s)

Journal Title

DOI

NAID

ISSN

Language

Data Source

[Journal Article] Transmission electron microscopy of bulk specimens over 10 μm in thickness2016

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Observation of Dislocations in Thick Specimens Using by The High-Voltage Electron Microscopy with an Energy Filter2016

Author(s)

Journal Title

DOI

NAID

ISSN

Language

Data Source

[Presentation] リューダース変形する鉄鋼材料の微視的不均一変形2023

Author(s)

Organizer

Data Source

[Presentation] 応力遮蔽理論に基づく亀裂先端転位増殖機構2020

Author(s)

Organizer

Data Source

[Presentation] HVEMによるSi単結晶中の亀裂先端転位群の三次元構造解析2017

Author(s)

Organizer

Data Source

[Presentation] 超高圧電子顕微鏡を用いたSi単結晶中亀裂先端転位群の三次元構造解析2017

Author(s)

Organizer

Data Source

[Presentation] 超高圧電子顕微鏡によるSi結晶中の亀裂先端転位三次元構造解析2015

Author(s)

Organizer

Place of Presentation

Year and Date

Data Source

SADAMATSU Sunao 定松直