2021 Fiscal Year Final Research Report
Development of non destructive techinique using opto-acoustic method
| Project/Area Number |
18H01722
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 26030:Composite materials and interfaces-related
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| Research Institution | Niigata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
坂本 秀一 新潟大学, 自然科学系, 准教授 (40211932)
プラムディタ ジョナス 日本大学, 工学部, 准教授 (50615458)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | 光学計測 / 残留応力 / 非破壊検査 / 異種材料接合 |
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| Outline of Final Research Achievements |
Against the background of "Maltimatrialization", development of a non-destructive techinique for disimiller bonded materials including metals, plastics are performed. The analysis focuses on residual stress in the vicinity of the bonded interface. An optical interferrometer is deviced to visuliaze the deforamtion behavior of material in two dimension and full field. The device is capable of visuallizing dynamic deformation when the materials are subjected to a minimul and reversible deformation. This project demonstrates the feasibility of a new technique of reisdual stress estimation.
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| Free Research Field |
材料加工 光計測
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| Academic Significance and Societal Importance of the Research Achievements |
機械的，化学的性質の異なる材料が接する異種材料接合体では，接合界面に生成する反応相や接合プロセス中に発生した残留応力が様々なスケールで，界面強度や疲労強度に重大な影響を及ぼす．接合評価で重要な残留応力の全視野可視化を試みた例はこれまでにほとんどない．また，従来の接合法の評価は，主に同種材の接合体を対象に考案されたものが多く，異材接合部の信頼性を評価するには十分とは言えない．本研究の実施によりにより光金属／プラスチック接合体などの接合材質の多様化に対応した信頼性評価の可能性が示された．
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