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涂层式裂纹监测系统中基体裂纹穿越行为研究

孙洋 王彪 王巧云 刘马宝

孙洋, 王彪, 王巧云, 刘马宝. 涂层式裂纹监测系统中基体裂纹穿越行为研究[J]. 力学学报, 2015, 47(5): 772-778. doi: 10.6052/0459-1879-15-142
引用本文: 孙洋, 王彪, 王巧云, 刘马宝. 涂层式裂纹监测系统中基体裂纹穿越行为研究[J]. 力学学报, 2015, 47(5): 772-778. doi: 10.6052/0459-1879-15-142
Sun Yang, Wang Biao, Wang Qiaoyun, Liu Mabao. STUDY OF THE SUBSTRATE CRACK PENETRATION MECHANISMS IN CRACK-DETECTED COATING SYSTEM[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 772-778. doi: 10.6052/0459-1879-15-142
Citation: Sun Yang, Wang Biao, Wang Qiaoyun, Liu Mabao. STUDY OF THE SUBSTRATE CRACK PENETRATION MECHANISMS IN CRACK-DETECTED COATING SYSTEM[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 772-778. doi: 10.6052/0459-1879-15-142

涂层式裂纹监测系统中基体裂纹穿越行为研究

doi: 10.6052/0459-1879-15-142
基金项目: 国家自然科学基金(51175404)和西安莲湖区产学研(K2013-026)资助项目.
详细信息
    通讯作者:

    刘马宝,教授,主要研究方向:飞行器结构健康监测,材料的疲劳与断裂.E-mail:mliu@mail.xjtu.edu.cn

  • 中图分类号: V215;O346

STUDY OF THE SUBSTRATE CRACK PENETRATION MECHANISMS IN CRACK-DETECTED COATING SYSTEM

Funds: The project was supported by the National Natural Science Foundation of China (51175404) and Xi'an Lotus Lake District funded projects (K2013-026).
  • 摘要: 建立了智能涂层的两相模型与三相模型,基于能量准则分别用这两种模型研究了基体裂纹达到涂层界面后的穿越/偏转行为. 用有限元法分析了相对裂纹扩展长度、弹性错配参数及界面层厚度对偏转裂纹与穿越裂纹能量释放率之比的影响,结果表明当基体裂纹到达驱动层与基体界面时,能量释放率之比不仅与基体和驱动层之间的弹性错配相关,而且当驱动层较薄时对驱动层与传感层之间的弹性错配亦有较强的依赖性. 此外,随着驱动层厚度的增加,能量释放率之比对驱动层与传感层之间的弹性错配的依赖性逐渐降低. 通过与实验结果相比,建立的模型能够较好的解释基体裂纹在界面的扩展行为,可用于智能涂层裂纹传感器的优化设计.

     

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  • 被引次数: 0
出版历程
  • 收稿日期:  2015-04-21
  • 修回日期:  2015-06-29
  • 刊出日期:  2015-09-18

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