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Investigation of the dominant mechanics of fatigue crack propagation in freestanding metallic nano-films considering cyclic plasticity

Research Project

Project/Area Number 16H06061
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Materials/Mechanics of materials
Research InstitutionOsaka University

Principal Investigator

Kondo Toshiyuki  大阪大学, 工学研究科, 助教 (70735042)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥26,390,000 (Direct Cost: ¥20,300,000、Indirect Cost: ¥6,090,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
Keywords材料強度学 / ナノ材料 / 薄膜 / 疲労 / 破壊 / 塑性/繰返し塑性 / 塑性・繰返し塑性 / 繰返し塑性
Outline of Final Research Achievements

To investigate the dominant mechanics of fatigue crack propagation in submicrometer-thick freestanding metallic nano-films, a tensile/cyclic tensile testing system for small nano-film specimen and a method for evaluating cyclic deformation field around a fatigue crack on the basis of in situ field emission scanning electron microscope observations were developed. The quantitative evaluations of the elasto-plastic properties of the nano-films in a large stress-strain range and the strain field around a fatigue crack were achieved in submicrometer-thick copper films. These methods are able to clarify the dominant mechanics of fatigue crack propagation.

Academic Significance and Societal Importance of the Research Achievements

マイクロ・ナノ材料の変形・破壊の支配力学は未解明であり,これはき裂先端などの破壊進行領域近傍の力学状態の詳細な解明が困難なことに因る。本研究で得た知見や確立した技術は,マイクロ・ナノ材料の機械的特性の高精度な評価や破壊箇所近傍の力学状態の解明を実現し,マイクロ・ナノ材料における破壊の支配力学を解明するための基盤となるものである。特に,マイクロ・ナノデバイスの長期信頼性を確保するうえで重要である疲労破壊の解明に大きく貢献するものであり,学術的・社会的意義が大きいものである。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (26 results)

All 2019 2018 2017 2016 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (21 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Vacuum effects on fatigue crack growth in submicrometre-thick freestanding copper films2019

    • Author(s)
      Toshiyuki Kondo, Akihiro Shin, Masaya Akasaka, Hiroyuki Hirakata and Kohji Minoshima
    • Journal Title

      Fatigue & Fracture of Engineering Materials & Structures

      Volume: 42 Issue: 5 Pages: 1118-1129

    • DOI

      10.1111/ffe.12976

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fracture toughness of freestanding copper films with a thickness of 39 nm2018

    • Author(s)
      Toshiyuki Kondo, Kazuki Hiramine, Hiroyuki Hirakata and Kohji Minoshima
    • Journal Title

      Engineering Fracture Mechanics

      Volume: 200 Pages: 521-531

    • DOI

      10.1016/j.engfracmech.2018.08.019

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of <i>In Situ</i> FESEM Fatigue/Creep Experimental Technique for Freestanding Metallic Nano-Films2016

    • Author(s)
      近藤俊之, 秦彰宏, 平方寛之, 﨑原雅之, 箕島弘二
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 65 Issue: 12 Pages: 869-876

    • DOI

      10.2472/jsms.65.869

    • NAID

      130005251201

    • ISSN
      0514-5163, 1880-7488
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Fatigue crack propagation properties of submicron-thick freestanding copper films in vacuum environment2016

    • Author(s)
      Toshiyuki KONDO, Akihiro SHIN, Hiroyuki HIRAKATA, Kohji MINOSHIMA
    • Journal Title

      Procedia Structural Integrity

      Volume: 2 Pages: 1359-1366

    • DOI

      10.1016/j.prostr.2016.06.173

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 単結晶銅薄膜微小試験片を用いた引張・疲労特性評価2019

    • Author(s)
      森國友章, 近藤俊之, 箕島弘二
    • Organizer
      日本機械学会関西支部 第94期定時総会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] サブミクロン銅薄膜の破壊じん性に及ぼす表面酸化被膜の影響2019

    • Author(s)
      三木大輝, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部 第94期定時総会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] サブミクロン単結晶金薄膜のクリープ特性2019

    • Author(s)
      高山篤史, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部 第94期定時総会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] サブミクロン銅薄膜の疲労き裂開閉口挙動に及ぼす真空環境効果2018

    • Author(s)
      近藤俊之, 赤坂昌哉, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会 第67期学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 表面酸化層を制御したサブミクロン銅薄膜の破壊じん性2018

    • Author(s)
      三木大輝, 近藤俊之, 平方寛之,箕島弘二
    • Organizer
      日本材料学会 第67期学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] マイクロ引張試験片を用いたサブミクロン銅薄膜の機械的特性評価2018

    • Author(s)
      森國友章, 近藤俊之, 箕島弘二
    • Organizer
      日本機械学会 2018年度年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Fracture Toughness of 39-nm-Thick Freestanding Copper Films2018

    • Author(s)
      Toshiyuki Kondo, Kazuki Hiramine, Hiroyuki Hirakata and Kohji Minoshima
    • Organizer
      Asia-Pacific Conference on Fracture and Strength (APCFS2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] サブミクロン単結晶金薄膜のクリープ特性評価法の開発2018

    • Author(s)
      高山篤史, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会関西支部 第13回若手シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] サブミクロン単結晶銅薄膜の引張・疲労特性評価法の開発2018

    • Author(s)
      森國友章, 近藤俊之, 箕島弘二
    • Organizer
      日本材料学会関西支部 第13回若手シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 金属ナノ薄膜の疲労2018

    • Author(s)
      近藤 俊之
    • Organizer
      日本機械学会 M&M2018材料力学カンファレンス
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 表面酸化層制御銅ナノ薄膜のその場FESEM観察破壊じん性試験2018

    • Author(s)
      近藤 俊之, 三木 大輝, 平方 寛之, 箕島 弘二
    • Organizer
      日本機械学会 M&M2018材料力学カンファレンス
    • Related Report
      2018 Annual Research Report
  • [Presentation] 切欠きを有するナノワイヤの強度試験法の開発2018

    • Author(s)
      原田 雄斗, 近藤 俊之, 箕島 弘二
    • Organizer
      日本機械学会 M&M2018材料力学カンファレンス
    • Related Report
      2018 Annual Research Report
  • [Presentation] 表面酸化層制御銅ナノ薄膜の疲労き裂進展特性2018

    • Author(s)
      伊達 虹貴, 近藤 俊之, 平方 寛之, 箕島 弘二
    • Organizer
      日本機械学会 M&M2018材料力学カンファレンス
    • Related Report
      2018 Annual Research Report
  • [Presentation] サブミクロン銅薄膜の疲労き裂進展特性に及ぼす新生面酸化/表面酸化層の影響2018

    • Author(s)
      赤坂昌哉, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会 関西支部 第93期定時総会講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] サブミクロン銅薄膜の疲労き裂進展の下限界特性に及ぼす酸化の影響2017

    • Author(s)
      赤坂昌哉, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会 第66期学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Effects of vacuum on fatigue crack propagation in freestanding copper submicron films2017

    • Author(s)
      Toshiyuki Kondo, Masaya Akasaka, Hiroyuki Hirakata, and Kohji Minoshima
    • Organizer
      14th International Conference on Fracture (ICF14)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] サブミクロン銅薄膜の疲労き裂進展に及ぼす表面酸化層の影響2017

    • Author(s)
      近藤俊之, 秦彰宏, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会 M&M2017 材料力学カンファレンス
    • Related Report
      2017 Annual Research Report
  • [Presentation] 10 nmオーダー厚自立銅薄膜のその場FESEM観察破壊じん性試験2017

    • Author(s)
      近藤俊之, 平峰一樹, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会 高温強度・破壊力学合同シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 銅ナノ薄膜の疲労き裂進展特性に及ぼす表面酸化層の影響2016

    • Author(s)
      近藤俊之, 秦彰宏, 赤坂昌哉, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会 M&M2016 材料力学カンファレンス
    • Place of Presentation
      神戸大学,神戸市
    • Year and Date
      2016-10-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] Fatigue crack propagation properties of submicron-thick freestanding copper films in vacuum environment2016

    • Author(s)
      Toshiyuki Kondo, Akihiro Shin, Hiroyuki Hirakata and Kohji Minoshima
    • Organizer
      21st European Conference on Fracture (ECF21)
    • Place of Presentation
      The Sheraton Catania Hotel & Conference Center, Catania, Italy
    • Year and Date
      2016-06-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 銅ナノ薄膜の疲労き裂進展の下限界特性に及ぼす真空環境効果2016

    • Author(s)
      近藤俊之, 秦彰宏, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会 第65期学術講演会
    • Place of Presentation
      富山大学,富山市
    • Year and Date
      2016-05-27
    • Related Report
      2016 Annual Research Report
  • [Remarks] 大阪大学大学院工学研究科

    • URL

      http://www-micro.mech.eng.osaka-u.ac.jp/home.html

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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