基于交换元素时间逆转方法的羔羊波概率损害识别
Zeyu Shu1, Jian He1, Muping Hu1
1College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China.
Sensors (Basel, Switzerland)
|October 26, 2024
概括
这项研究引入了一种新的概率方法来定位Lamb波损伤,减少了对广泛传感器数据和基线信号的需求. 概率交换元素时间逆转方法 (PEX-TRM) 提高了损坏识别效率.
科学领域:
- 结构健康监测 结构健康监测
- 非破坏性测试 不破坏性测试
- 声波传播的声波传播
背景情况:
- 没有基线的Lamb波损伤识别方法通常需要大量的传感器数据.
- 现有方法面临的挑战是损伤波包提取和效率.
研究的目的:
- 提出一种高效准确的Lamb波损伤定位方法.
- 为了减少对基线信号的依赖,并尽量减少传感器数据要求.
主要方法:
- 开发了概率交换元素时间逆转方法 (PEX-TRM).
- 对损坏波束迁移对信号相关性的影响进行分析.
- 损坏概率成像利用结构对称性用于稀疏的传感路径.
主要成果:
- 佩克斯-TRM实现损坏位置与更少的激发时间.
- 该方法有效地避免了提取损坏波包的困难.
- 增强位置准确性,特别是在稀疏的传感路径下.
结论:
- PEX-TRM显著提高了Lamb波损伤定位的效率.
- 拟议的方法显示了在结构健康监测中的工程应用的巨大潜力.
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