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不同幅值激励的复合材料板时间反转损伤识别方法

周俊宇 杨洋 肖黎 屈文忠

周俊宇, 杨洋, 肖黎, 屈文忠. 不同幅值激励的复合材料板时间反转损伤识别方法[J]. 机械科学与技术, 2017, 36(2): 298-302. doi: 10.13433/j.cnki.1003-8728.2017.0223
引用本文: 周俊宇, 杨洋, 肖黎, 屈文忠. 不同幅值激励的复合材料板时间反转损伤识别方法[J]. 机械科学与技术, 2017, 36(2): 298-302. doi: 10.13433/j.cnki.1003-8728.2017.0223
Zhou Junyu, Yang Yang, Xiao Li, Qu Wenzhong. Damage Detection for Composites with Different Amplitude of Excitation by using Via Time Reversal Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(2): 298-302. doi: 10.13433/j.cnki.1003-8728.2017.0223
Citation: Zhou Junyu, Yang Yang, Xiao Li, Qu Wenzhong. Damage Detection for Composites with Different Amplitude of Excitation by using Via Time Reversal Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(2): 298-302. doi: 10.13433/j.cnki.1003-8728.2017.0223

不同幅值激励的复合材料板时间反转损伤识别方法

doi: 10.13433/j.cnki.1003-8728.2017.0223
基金项目: 

国家自然科学基金项目(51378402)资助

详细信息
    作者简介:

    周俊宇(1991-),硕士研究生,研究方向为结构健康监测,junyuzhou@whu.edu.cn

    通讯作者:

    屈文忠(联系人),教授,博士生导师,qwz@whu.edu.cn

Damage Detection for Composites with Different Amplitude of Excitation by using Via Time Reversal Method

  • 摘要: 复合材料结构受到冲击时会产生基体开裂、层脱等损伤,通常情况下损伤界面保持闭合接触。小幅值激励下应力波产生的应变极小,损伤界面仍处于闭合的线性状态,时间反转重构信号不能表明损伤的存在与否。针对该问题,采用不同幅值激励的时间反转方法进行损伤检测与识别,利用时间反转重构信号与激励信号的相关系数构造了损伤指数,开展了基于压电作动/传感阵列的复合材料板损伤识别与定位的实验研究。实验结果表明:小幅值激励下作动-传感的完整路径和损伤路径上的时间反转重构信号与原始激励信号相似程度均很高,不能表征结构中的损伤;而增大激励幅值至某一阈值后,损伤路径上的损伤指数明显增大,而完整路径上的损伤指数变化不明显;利用该方法准确地识别与定位了板中损伤。
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出版历程
  • 收稿日期:  2015-06-19
  • 刊出日期:  2017-02-05

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