2022 Fiscal Year Final Research Report
Research on cyclic stress measurement method using metal foil applying XRD analysis
| Project/Area Number |
20K04239
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 18040:Machine elements and tribology-related
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| Research Institution | Tottori University |
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Principal Investigator |
Ono Yuichi 鳥取大学, 工学研究科, 教授 (50335501)
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| Co-Investigator(Kenkyū-buntansha) |
森戸 茂一 島根大学, 学術研究院理工学系, 教授 (00301242)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 応力・ひずみ測定 / 実験応力解析 / 金属疲労 / めっき法 |
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| Outline of Final Research Achievements |
A new principal stress measurement method was proposed using the crystallographic features of grains grown by cyclic loading of electrodeposited metal foils (copper and nickel foils). That is, the grown grains were analyzed by the XRD method and quantified by the Lotgering factor, and a calibration equation for principal stress measurement was established. This method is effective for stress measurement in microscopic areas such as stress concentration points.
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| Free Research Field |
材料力学，機械設計学
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| Academic Significance and Societal Importance of the Research Achievements |
繰返し負荷により金属薄膜に発生する成長粒子をXRD法により詳細に解析した報告はこれまでになく，配向性が二軸応力に依存するという新たな知見が得られた．この結果はEBSD法により解析した結果とよく一致しており，妥当な結果であるといえる．この結晶学的特徴を応力測定に応用するという考え方が独創的であり，新規性があると考えられる．また，応力集中箇所などの微視的領域の繰返し応力を本手法により計測できるようになれば，安全・安心な機械の設計に貢献できるので，社会的意義も高いと言える．
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