• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Evaluation of large-strain plasticity of nano-films by a hybrid digital image correlation method

Research Project

Project/Area Number 25630012
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Materials/Mechanics of materials
Research InstitutionOsaka University

Principal Investigator

MINOSHIMA Kohji  大阪大学, 工学(系)研究科(研究院), 教授 (50174107)

Co-Investigator(Kenkyū-buntansha) HIRAKATA Hiroyuki  大阪大学, 大学院工学研究科, 准教授 (40362454)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords薄膜 / 塑性変形特性 / 材料強度学 / マイクロ材料強度学
Outline of Final Research Achievements

We developed a method for estimating large-strain plasticity of metallic nano-films on the basis of local large-strain deformation field, which was intentionally introduced and was evaluated by a digital image correlation (DIC) method. We conducted in situ field emission scanning electron microscopy (FESEM) tensile testing for a 500-nm-thick Cu film with a notch, and evaluated the large-strain deformation field around the notch root by DIC. Based on the deformation field, we estimated the plastic properties of the films with the aid of elastic-plastic finite element analysis. This method enabled us to estimate large-strain plasticity up to ~6% of the films whose fracture strain was less than 1% in conventional tensile testing. As an application, we applied the method to the fatigue crack closure of Cu films. The results showed that the method could quantitatively evaluate the fatigue crack closure.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (10 results)

All 2015 2014 2013 Other

All Presentation (8 results) Remarks (2 results)

  • [Presentation] 自立銅ナノ薄膜の疲労き裂進展におけるき裂開閉口挙動2015

    • Author(s)
      石井孝樹, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部第90期定時総会講演会
    • Place of Presentation
      京都大学,京都市
    • Year and Date
      2015-03-16 – 2015-03-17
    • Related Report
      2014 Annual Research Report
  • [Presentation] FESEM局所変形場評価によるナノ薄膜の高ひずみ塑性特性評価法の開発2015

    • Author(s)
      田村拓, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部第90期定時総会講演会
    • Place of Presentation
      京都大学,京都市
    • Year and Date
      2015-03-16 – 2015-03-17
    • Related Report
      2014 Annual Research Report
  • [Presentation] 自立銅ナノ薄膜の疲労き裂進展機構と膜厚依存性2014

    • Author(s)
      近藤俊之, 石井孝樹, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会第32回疲労シンポジウム
    • Place of Presentation
      高山市民文化会館,高山市
    • Year and Date
      2014-11-06 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] 自立銅ナノ薄膜の疲労き裂進展下限界近傍におけるき裂開閉口挙動2014

    • Author(s)
      石井孝樹, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      第58回日本学術会議材料工学連合講演会
    • Place of Presentation
      京都テルサ,京都市
    • Year and Date
      2014-10-27 – 2014-10-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] 結晶方位解析による自立銅ナノ薄膜の疲労き裂発生強度の力学的評価2014

    • Author(s)
      畢暁晨, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部第89期定時総会講演会講演論文集No.144-1, p.12-17.
    • Place of Presentation
      大阪府立大学,堺市
    • Related Report
      2013 Research-status Report
  • [Presentation] ナノ観察とEBSD援用応力解析による自立銅ナノ薄膜の疲労損傷発生機構の解明2013

    • Author(s)
      近藤俊之, 畢暁晨, 田村拓, 平方寛之, 箕島弘二
    • Organizer
      日本材料学会第62期学術講演会講演論文集, 講演番号505.
    • Place of Presentation
      東京工業大学, 東京都
    • Related Report
      2013 Research-status Report
  • [Presentation] 自立銅ナノ薄膜の疲労き裂進展過程のその場FESEM観察2013

    • Author(s)
      近藤俊之, 平方寛之, 﨑原雅之, 箕島弘二
    • Organizer
      日本機械学会M&M2013材料力学カンファレンス講演論文集, OS1202.
    • Place of Presentation
      岐阜大学,岐阜市
    • Related Report
      2013 Research-status Report
  • [Presentation] 自立ナノ薄膜の疲労損傷形成過程のナノ観察2013

    • Author(s)
      畢暁晨, 田村拓, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会M&M2013材料力学カンファレンス講演論文集, PS24.
    • Place of Presentation
      岐阜大学,岐阜市
    • Related Report
      2013 Research-status Report
  • [Remarks] 大阪大学大学院工学研究科機械工学専攻

    • URL

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

    • Related Report
      2014 Annual Research Report
  • [Remarks] 大阪大学大学院工学研究科機械工学専攻

    • URL

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

    • Related Report
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi