在复合层材中对单向羊羔和SH混合方法的实验研究
Siyang Xie1, Youxuan Zhao1, Yuzi Liu2
1College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.
Sensors (Basel, Switzerland)
|December 31, 2025
概括
这项研究表明,在复合板材中混合Lamb和剪切水平 (SH) 波可以通过共振SH波检测撞击损伤. 这种方法对非线性和冲击敏感,但不对分层敏感.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
- 波浪传播 波浪传播
背景情况:
- 复合板材容易受到各种损坏,包括分层和冲击.
- 复合材料中的非线性波现象为先进的损坏检测提供了潜力.
- 羔羊波和剪切水平 (SH) 波是材料表征的超声波技术.
研究的目的:
- 为了研究一向Lamb和SH波混合在损坏的复合板材中的共振行为.
- 探索这种混合方法对固有的二次非线性,分层和冲击损伤的敏感性.
- 用共振波信号实验验证损伤定位方法.
主要方法:
- 在复合板材中混合波的实验研究.
- 在特定的混合条件下生成和分析共振SH波.
- 时间域信号分析用于损坏定位验证.
主要成果:
- 当基本的S0模式Lamb波和SH0波混合在受损区域时,共振SH波会产生.
- 反响波的时间域信号通过实验验证了一种损伤定位方法.
- 单向Lamb和SH混合方法显示对二次非线性和冲击损伤的敏感性.
- 该方法表明对分层损坏的不敏感性.
结论:
- 单向Lamb和SH波混合方法是检测复合材料中的冲击损伤和非线性的一种可行的技术.
- 观察到的共振现象为损害局部化策略提供了基础.
- 可能需要进一步的研究来调整该方法用于分层检测.
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