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Development of Coupling Analysis Method of Electric Field and Stress Field to Predict Corrosion Rate in Corrosion Fatigue

Research Project

Project/Area Number 26289004
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionUniversity of Fukui

Principal Investigator

Kuwazuru Osamu  福井大学, 学術研究院工学系部門, 准教授 (40334362)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Keywords環境強度 / 腐食疲労 / 応力腐食割れ / 腐食電場解析 / 腐食/応力連成解析 / 分極曲線 / 応力腐食 / 腐食・応力連成解析
Outline of Final Research Achievements

Aiming at the development of corrosion-stress coupling analysis method, a new methodology to evaluate the effect of stress on electrochemical property was established. Although the coupling analysis code could not developed since the examination of experimental conditions required an excessive time, a method to evaluate the polarization curve of microscopically-damaged potion of oxide film by using a damage model. We measured the variation of polarization curve of the cast aluminum alloy by the effect of stress in sodium chloride solution, and found that the spontaneous potential decreased about 40 mV under the influence of stress. The casting skin has lower spontaneous potential than the polished surface, and easy to corrode by the effect of stress. Moreover, as a result of boundary-element electric field analysis on the damaged oxide film, we found that the damaged potion of oxide film has about 120 mV lower spontaneous potential than the intact potion.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • 2014 Annual Research Report

Research Products

(9 results)

All 2017 2016 2015 Other

All Int'l Joint Research Journal Article Presentation Remarks

  • [Int'l Joint Research] 中央フロリダ大学/エンブリーリドル航空大学/ウォルトディズニー(アメリカ合衆国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Electrostatic Corrosion Analysis with Damaged Passive Film Model of Stainless Steel2017

    • Author(s)
      O. Kuwazuru, K. Ode, W. Liu
    • Journal Title

      International Journal of Computational Methods and Experimental Measurements

      Volume: 5 Pages: 271-280

    • DOI

      10.2495/cmem-v5-n3-271-280

    • Related Report
      2016 Annual Research Report
    • Open Access / Acknowledgement Compliant
  • [Presentation] Electrostatic Corrosion Analysis with Damaged Passive Film Model of Stainless Steel2016

    • Author(s)
      O. Kuwazuru, K. Ode, W. Liu
    • Organizer
      39th International Conference on Boundary Elements and Other Mesh Reduction Methods
    • Place of Presentation
      Siena (Italy)
    • Year and Date
      2016-09-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microscopic Corrosion Electric Field Analysis with Damaged Passive Film of Stainless Steel2016

    • Author(s)
      O. Kuwazuru, M. Yamada, K. Ode, W. Liu
    • Organizer
      24th International Congress on Theoretical and Applied Mechanics
    • Place of Presentation
      Montreal (Canada)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of stress on electrochemical property of high pressure die cast aluminum alloy in corrosive environment2015

    • Author(s)
      O. Kuwazuru, K. Ode, W. Liu, K. Watanabe
    • Organizer
      The 6th TSME International Conference on Mechanical Engineering
    • Place of Presentation
      Cha-Am, Thailand
    • Year and Date
      2015-12-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アルミニウム合金ダイカストの電気化学特性に対する応力と鋳肌の影響2015

    • Author(s)
      大出知寛, 劉文利, 桑水流理
    • Organizer
      日本機械学会M&M2015材料力学カンファレンス
    • Place of Presentation
      慶應義塾大学 矢上キャンパス
    • Year and Date
      2015-11-21
    • Related Report
      2015 Annual Research Report
  • [Remarks] 福井大学大学院工学研究科桑水流研究室ホームページ

    • URL

      http://csm.npes.u-fukui.ac.jp

    • Related Report
      2016 Annual Research Report
  • [Remarks] 福井大学 大学院工学研究科 計算固体力学研究室

    • URL

      http://csm.npes.u-fukui.ac.jp

    • Related Report
      2015 Annual Research Report
  • [Remarks] 計算固体力学研究室

    • URL

      http://csm.npes.u-fukui.ac.jp/

    • Related Report
      2014 Annual Research Report

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Published: 2014-04-04   Modified: 2018-03-22  

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