TAKAHASHI Koji

Affiliation

Faculty of Engineering, Division of Materials Science and Chemical Engineering

Job Title

Professor

Research Fields, Keywords

Surface treatment, Stress analysis, Metal fatigue, Self healing material, 3D積層造形

Mail Address

E-mail address

Related SDGs




ORCID  https://orcid.org/0000-0001-5971-0582

The Best Research Achievement in Research Career 【 display / non-display

The Best Research Achievement in the last 5 years 【 display / non-display

Education 【 display / non-display

  •  
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    2000

    Kyushu University   Completed

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    1995

    Kyushu University   Graduated

Degree 【 display / non-display

  • Doctor of Engineering - Kyushu University

Campus Career 【 display / non-display

  • 2012.1
     
     

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Professor  

  • 2007.4
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    2011.12

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Associate Professor  

  • 2005.1
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    2007.3

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Associate Professor  

  • 2003.1
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    2004.12

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Lecturer  

  • 2001.4
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    2002.12

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Research Assistant  

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External Career 【 display / non-display

  • 2000.4
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    2001.2

    Kyushu University   Special researcher of the Japan Society for the Promotion of Science  

Academic Society Affiliations 【 display / non-display

  • 2018.10
     
     
     

    ショットピーニング技術協会

  • 2003
     
     
     

    Japan Society of Spring Engineers

  • 1997
     
     
     

    The Society of Materials Science Japan

  • 1995
     
     
     

    The Japan Society of Mechanical Engineers

  • 2023
     
     
     

    Japan Society for Heat Treatment

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Research Areas 【 display / non-display

  • Nanotechnology/Materials / Structural materials and functional materials

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Mechanics of materials and materials

 

Research Career 【 display / non-display

  • Improvement of fatigue strength of metals and acceptable surface defects by mechanical surface treatment

    Cooperative Research  

    Project Year:

  • Improvement of reliability in ceramics by shot peening and crack-healing

    Grant-in-Aid for Scientific Research  

    Project Year:

  • Improvement of contact strength in ceramics by crack-healing

    Grant-in-Aid for Scientific Research  

    Project Year:

  • Self-crack-healing behavior of ceramics during service

    Grant-in-Aid for Scientific Research  

    Project Year:

  • Effects of overload on fatigue strength and SCC behavior of metals

    Project Year:

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Books 【 display / non-display

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Thesis for a degree 【 display / non-display

  • 多軸疲労強度に及ぼす微小欠陥および微小き裂の影響に関する研究

    高橋宏治

    2000.3

    Doctoral Thesis   Single Work  

Papers 【 display / non-display

  • 3D積層したマルエージング鋼の疲労強度に及ぼす時効処理およびレーザピーニングの影響

    土屋詩織, 髙橋宏治

    ショットピーニング技術   36 ( 1 )   2 - 8   2024.1  [Reviewed]

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Joint Work  

  • Effect of Crystal Structure of Compound Layer on Bending Fatigue Strength of Nitrided Medium Carbon Steel

    KONDO Ryota, TAKAHASHI Koji, TAKAMURA Kosuke, WATANABE Yoichi

    NETSUSHORI   63 ( 5 )   282 - 289   2023.10

    DOI CiNii Research

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society for Heat Treatment   Joint Work  

    <p>The effect of the crystal structure of the compound layer on the plane bending fatigue strength of nitrided carbon steel S45C was evaluated. When the compound layer consisted mainly of ε phase, the plane bending fatigue limit was higher than that of γ’ phase. The fatigue failure originated from the surface of the ε-phase at high stresses, but all other conditions resulted in an internal origin. The fatigue limit was affected by the internal properties of the specimen. The local fatigue limit of the diffusion layer calculated from hardness and residual stress was higher for the ε phase than for the γ’ phase, which was consistent with the experimental results.</p>

  • Effect of Shot and Laser Peening on Fatigue Strength of Additively Manufactured Aluminum Alloy with Rough Surfaces

    Nakamura Misato, Takahashi Koji, Saito Yuta

    Journal of Materials Engineering and Performance   32 ( 4 )   1589 - 1600   2023.2  [Reviewed]

    DOI Web of Science

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    Language:English   Publishing type:Research paper (scientific journal)   Joint Work  

    Other Link: https://doi.org/10.1007/s11665-022-07225-1

  • Fatigue Limit Improvement and Rendering Surface Defects Harmless by Shot Peening for Carburized Steel

    Tsuji Toshiya, Fujino Masashi, Takahashi Koji

    Metals   13 ( 1 )   2023.1  [Reviewed]

    DOI Web of Science

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Joint Work  

    Other Link: https://doi.org/10.3390/met13010042

  • Effects of Shot Diameter on Fatigue Strength of Shot Peened Spring Steel

    KONDO Ryota, TAKAHASHI Koji

    Transactions of Japan Society of Spring Engineers   2022 ( 67 )   69 - 73   2022.10  [Reviewed]

    DOI CiNii Research

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Spring Engineers   Joint Work  

    Other Link: https://doi.org/10.5346/trbane.2022.69

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Review Papers 【 display / non-display

  • 3D積層造形した金属材料のレーザーピーニングによる疲労強度向上

    高橋宏治

    月刊トライボロジー   ( 432 )   36 - 39   2023.8

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)   Single Work  

  • 各種ピーニング技術による金属材料の疲労強度向上

    高橋宏治

    月刊トライボロジー   ( 408 )   38 - 41   2021.8

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)   Single Work  

  • ショットピーニング技術の原理と疲労強度向上メカニズム

    高橋宏治

    機械設計   65 ( 1 )   14 - 18   2021.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Single Work  

  • レーザピーニングによる高強度アルミ合金の表面欠陥の無害化

    高橋宏治

    メカニカル・サーフェステック   ( 58 )   32 - 34   2020.10

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)   Single Work  

  • ショットピーニングと自己き裂治癒によるセラミックスの転がり疲労強度の向上

    高橋宏治

    砥粒加工学会誌   63 ( 5 )   226 - 229   2019.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Single Work  

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Industrial Property Rights 【 display / non-display

  • 表面欠陥材の疲労限度向上方法

    高橋文雄,小野芳樹,安藤柱,高橋宏治

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    Applicant:日本発条㈱,横浜国立大学

    Application no:2008-289400  Date applied:2008.11

    Announcement no:2010-117191  Date announced:2010.5

    Country of applicant:Domestic  

  • セラミックス製品の製造方法,セラミックス製品

    高橋宏治,安藤柱,木村芳貴,西尾嘉唯

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    Applicant:横浜国立大学

    Application no:2008-207859  Date applied:2008.8

    Announcement no:2010-42957  Date announced:2010.2

    Patent/Registration no:5273529  Date issued:2013.5

    Country of applicant:Domestic  

    ショットピーニングにより表面層に大きな圧縮残留応力を導入するとともに,加工等により生じたき裂を治癒することにより,セラミックスの破壊靱性値,曲げ強度,接触強度を向上する.

  • 表面硬化高強度セラミックス及びその製造方法

    中尾航,千葉洋平,安藤柱,高橋宏治,岩田圭祐,西義武

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    Applicant:横浜国立大学,東海大学

    Application no:2007-240484  Date applied:2007.9

    Announcement no:2009-067659  Date announced:2009.4

    Patent/Registration no:5152837  Date issued:2012.12

    Country of applicant:Domestic  

Awards 【 display / non-display

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 3D積層造形した高強度鋼の超高サイクル疲労強度向上法の確立

    2022.4 - 2025.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(B)

    Investigator(s):高橋宏治

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    Authorship:Principal investigator  Grant type:Competitive

  • レーザピーニングによる3D積層造形金属の疲労強度向上と表面欠陥の無害化

    2019.4 - 2022.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(B)

    Investigator(s):高橋宏治

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    Authorship:Principal investigator  Grant type:Competitive

  • レーザーピーニングと自己き裂治癒によるセラミックスの高温域における信頼性向上

    2016.4 - 2019.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(B)

    Investigator(s):高橋宏治

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    Authorship:Principal investigator  Grant type:Competitive

  • ショットピーニングと自己き裂治癒の併用によるセラミックスの摩擦・摩耗特性の向上

    2013.4 - 2016.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(B)

    Investigator(s):高橋宏治

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    Authorship:Principal investigator  Grant type:Competitive

  • 自己き裂治癒の応用によるセラミックスの転がり疲労強度向上

    2010.4 - 2013.3

    科学研究費補助金  Grant-in-Aid for Young Scientists(A)

    Investigator(s):高橋宏治

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    Grant type:Competitive

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Other external funds procured 【 display / non-display

  • 極限環境対応構造材料研究拠点

    2022.10 - 2031.3

    Ministry of Education, Culture, Sports, Science and Technology 

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    Authorship:Coinvestigator(s) 

  • レーザピーニングを利用した医療用純チタンの信頼性向上 ―表面欠陥の無害化-

    2022.4 - 2024.3

    Private Foundations  教育研究資金

    Investigator(s):高橋宏治

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    Authorship:Principal investigator 

  • レーザピーニングによる3D造形セラミック部材の長寿命化

    2021.9 - 2024.3

    Private Foundations  天田財団助成

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    Authorship:Principal investigator 

  • レーザピーニングを利用したチタニウム合金およびマグネシウム合金の信頼性向上 ―表面欠陥の無害化-

    2021.4 - 2022.3

    Private Foundations  教育研究資金

    Investigator(s):高橋宏治

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    Authorship:Principal investigator 

  • ピーニングによる圧力容器の安全性向上に関する基礎研究

    2012.4 - 2013.3

    平成23年度ボイラー・圧力容器等研究助成

    Investigator(s):高橋宏治

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    Authorship:Principal investigator 

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Presentations 【 display / non-display

  • 合金鋼の疲労強度に及ぼす表面硬化熱処理の影響

    熊谷航太、高橋宏治

    2023年度極限環境対応構造材料研究拠点成果報告会  2024.3  極限環境対応構造材料研究拠点(RISME)

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    Event date: 2024.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学  

  • レーザピーニングおよびショットピーニングによる金属の疲労強度向上と表面欠陥無害化

    高橋宏治  [Invited]

    ショットピーニング技術協会 見学会  2023.12  ショットピーニング技術協会

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    Event date: 2023.12

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:新東工業株式会社 一宮事業所  

  • Effect of crystal structure of compound layer on bending fatigue strength of nitrided medium carbon steel

    Koji TAKAHASHI, Ryota KONDO, Kosuke TAKAMURA, Yoichi WATANABE

    MRM2023 

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    Event date: 2023.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Kyoto  

  • Effects of laser peening on the very high cycle fatigue strength of additively manufactured maraging steel

    Koji TAKAHASHI  [Invited]

    28th IFHTSE2023 

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    Event date: 2023.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Yokohama  

  • 3D積層造形技術で作製したアルミナの強度向上

    野口裕也、高橋宏治、中根孝弥

    2023年度秋季「ばね及び復元力応用講演会」  日本ばね学会

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:明治大学  

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Preferred joint research theme 【 display / non-display

  • 表面改質による金属材料の疲労強度向上と表面欠陥の無害化

  • エネルギー機器の信頼性向上

  • 構造用セラミックスの強度および信頼性向上に関する研究

Past of Collaboration and Commissioned Research 【 display / non-display

  • 表面硬化部材の疲労損傷研究部会

    Offer organization: 神奈川産技総研,東北大学,富山大学,企業12社   Cooperative Research within Japan  

    Project Year: 2013.4  -  2024.3 

  • バニシングによるアルミニウム合金における表面欠陥の無害化

    Offer organization: 株式会社シマノ   Cooperative Research within Japan  

    Project Year: 2022.4  -  2024.3 

  • ローディングアーム用ステンレス鋼の劣化度評価

    Offer organization: TBグローバルテクノロジーズ株式会社   Cooperative Research within Japan  

    Project Year: 2018  -  2021 

  • 表面圧縮残留応力の分布形態が内部起因疲労破壊に及ぼす影響に関する研究

    Offer organization: 日本発条   Funded Research offered by Enterprises  

    Project Year: 2017.10  -  2018.9 

  • 変位制御下の亀裂付き配管の破壊強度に関する研究

    Offer organization: テプコシステムズ   Funded Research offered by Enterprises  

    Project Year: 2017.7  -  2020.9 

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Charge of on-campus class subject 【 display / non-display

  • 2024   Exercise in Technology for Energy Creation F

    Graduate school of Engineering Science

  • 2024   Exercise in Technology for Energy Creation S

    Graduate school of Engineering Science

  • 2024   Exercise in Analysis for Energy Creation F

    Graduate school of Engineering Science

  • 2024   Exercise in Analysis for Energy Creation S

    Graduate school of Engineering Science

  • 2024   Seminar D in Chemistry Applications and Life Science

    Graduate school of Engineering Science

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Committee Memberships 【 display / non-display

  • 一般社団法人日本機械学会

    2022.4 - 2023.3  材料力学部門表彰部会 委員長

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    Committee type:Academic society 

  • 窒素を活用した新熱処理研究部会

    2022.12  委員

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    Committee type:Academic society 

  • ISO/TC227ばね国内委員会

    2021.4 - 2024.3  委員

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    Committee type:Government 

  • 日本機械学会材料力学部門

    2021.4 - 2022.3  表彰部会副委員長

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    Committee type:Academic society 

  • 圧縮コイルばねの時間強度線図研究委員会

    2020.4  アドバイザー

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    Committee type:Academic society 

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Social Contribution(Extension lecture) 【 display / non-display

  • 令和5年度 第1回 熱処理技術セミナー

    Role(s): Lecturer

    熱処理技術協会  東京都  2023.5

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    Audience: General public

    Type:Seminar, workshop

    金属疲労の基礎と応用-金属疲労のメカニズムと疲労破壊の防止-

  • 機械構造用鋼表面硬化部材の疲労損傷Ⅲシンポジウム

    Role(s): Host, Planner

    日本鉄鋼協会  第184 回秋季講演大会  福岡工業大学  2022.9

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    Audience: Researchers, Company

    Type:Lecture

    横浜国立大学・表面硬化部材の疲労損傷研究部会(第3期)の成果を報告した。

  • 令和4年度 第1回 熱処理技術セミナー

    Role(s): Lecturer

    熱処理技術協会  東京都  2022.5

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    Audience: General public

    Type:Seminar, workshop

    金属疲労の基礎と応用-金属疲労のメカニズムと疲労破壊の防止-

  • 令和3年度 第1回 熱処理技術セミナー

    Role(s): Lecturer

    熱処理技術協会  東京都  2021.7

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    Audience: General public

    Type:Seminar, workshop

    金属疲労の基礎と応用-金属疲労のメカニズムと疲労破壊の防止-

  • 令和2年度 第1回 熱処理技術セミナー

    Role(s): Lecturer

    熱処理技術協会  東京都  2020.11

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    Audience: General public

    Type:Seminar, workshop

    金属疲労の基礎と応用の講師を担当

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Media Coverage 【 display / non-display

  • 表面欠陥をレーザピーニング により無害化

    https://www.ynu.ac.jp/hus/koho/23800/detail.html  2020.3

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    Author:Myself 

    横浜国大プレスリリース, 2020年3月30日