Explication of competition between self-healing and crack propagation in fiber-reinforced self-healing ceramics

纤维增强自修复陶瓷中自修复与裂纹扩展之间竞争的解释

• 批准号: 24760072
• 负责人: NAKAO Wataru
• 金额: $ 2.91万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760072/
• 关键词: 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

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.

纤维增强自修复陶瓷最吸引人的特点是能够对使用中产生的裂纹进行自主自修复，有望成为下一代结构材料的候选材料之一。为了利用这一特性，有必要了解服役过程中裂纹扩展和自愈之间的竞争关系，建立了明确这种竞争关系的实验方法。随后，系统地研究了应力作用下裂纹扩展的自愈行为。从实验数据中发现，裂纹自愈合停止扩展的时间比完全恢复强度的时间要短得多。

项目成果

Advanced Self-Healing Ceramics for Turbine Blade

涡轮叶片先进自愈陶瓷

• 发表时间: 2013
• 期刊: Proceedings of the 38 International Conference on Advanced Ceramics and Composites
• 作者: 渡邉究;桑水流理;半谷禎彦;宇都宮登雄;北原総一郎;W. NAKAO
• 通讯作者: W. NAKAO

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

评论 Wataru Nakao，喷气发动机涡轮叶片自修复陶瓷的开发，金属，2013 年，第 83 卷，第 12 期，1021-1027

Quantitation of the usefulness of self-healing under crack propagation

裂纹扩展下自修复有效性的定量

• 发表时间: 2014
• 作者: Shousei MIYAMOTO;Wataru NAKAO
• 通讯作者: Wataru NAKAO

き裂進展下における自己治癒機能の有用性の定量化

裂纹扩展下自愈功能有用性的量化

• 发表时间: 2013
• 作者: Amane Takei;Kohei Murotani;Shin-ichiro Sugimoto;Masao Ogino;Hiroshi Kawai;谷口茂;Tomoaki Okayama;宮本翔生,中尾航
• 通讯作者: 宮本翔生,中尾航