2013 Fiscal Year Final Research Report
Explication of competition between self-healing and crack propagation in fiber-reinforced self-healing ceramics
| Project/Area Number |
24760072
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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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 | Yokohama National University |
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Principal Investigator |
NAKAO Wataru 横浜国立大学, 工学研究院, 准教授 (60361870)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | インテリジェント材料 / 構造材料 / 破壊力学 / き裂 / 高温構造材料 / FRC |
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| Research Abstract |
The most attractive feature of fiber-reinforced self-healing ceramics, which is anticipated to be one of the candidates as next generation structural materials, is to enable to autonomically self-heal the cracks introduced in service. To utilize the feature, it is necessary to know competition relation between crack propagation and self-healing in service.
In the present study, the experimental method to clear the competition relation was established. Subsequently, the self-healing behaviors with crack propagation under stress were systematically investigated. From the experimental data, it was found that the time at which the crack propagation was arrested by self-healing is quite shorter than the time at which complete strength recovery was attained by self-healing.
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[Remarks] 解説 中尾 航,ジェットエンジン用タービン翼を目指した自己治癒セラミックスの開発,金属, 2013, Vol. 83, No. 12, 1021-1027
