2015 Fiscal Year Final Research Report
Evaluation of fatigue damage of short-fober reinforced plastics based on simultaneous stress measurement and microimaging by synchrotron radiation
| Project/Area Number |
26630014
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Meijo University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KIMACHI HIROHISA 名城大学, 理工学部, 教授 (30324453)
SHOBU TAKAHISA 日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (90425562)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 機械材料・材料力学 / 疲労 / 短繊維強化樹脂 / 応力評価 / 放射光イメージング / X線 / き裂 / 破壊力学 |
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| Outline of Final Research Achievements |
Macrostresses are evaluated from the measurement of matrix stress by X-rays using the stress-partitioning coefficient which can be determined experimentally or theoretically. In the measurement of residual macrostresses, the microstress due to mismatch of thermal expansion coefficient need to be subtracted from the measured value. A fracture mechanics parameter controlling the fatigue crack propagation behavior is the crack-tip opening range evaluated based on anisotropic elasticity. Prediction of fatigue crack becomes possible based on simultaneous measurement of stress and fiber orientation, combined with fracture mechanics approach.
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| Free Research Field |
材料強度学、疲労
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