基于Lamb波的结构损坏检测:使用协同集成的时间序列方法
1Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics, AGH University of Krakow, Al. Mickiewicza 30, 30-059 Krakow, Poland.
Materials (Basel, Switzerland)
|November 14, 2023
概括
本研究引入了一种使用Lamb波数据进行结构损伤评估的新型协同集成方法,克服了复杂的传播和温度效应的局限性. 该方法有效地检测和区分结构中的损伤状况,增强结构健康监测.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
- 非破坏性测试 不破坏性测试
背景情况:
- 羊羔波被广泛用于结构损坏检测,但面临实际限制.
- 挑战包括复杂的波传播模式和影响测量的温度变化.
- 现有的方法难以直接解释Lamb波响应对结构健康的直接解释.
研究的目的:
- 为结构损坏评估提出一种新的,基于二步协同集成的计算程序.
- 为了利用Lamb波数据作为时间序列,以共同的趋势进行损害评估.
- 开发一种耐温度波动的方法,以改善结构健康监测 (SHM).
主要方法:
- 采用了两步的共同整合分析程序.
- 羔羊波时间序列根据常见的温度趋势进行分组.
- 对每个群体都进行了共同整合分析,创建了损害特定的模型.
- 序列和残余的几何和统计特征 (形状,振幅,方差) 被提取用于损坏检测.
主要成果:
- 协同整合方法成功地检测并区分无损和损坏的状态.
- 该方法在温度波动下使用来自板的Lamb波浪数据进行了验证.
- 提出的技术在处理温度变化等环境变化方面表现出有效性.
结论:
- 这种基于协同集成的新方法为基于Lamb波的损害检测提供了强大的解决方案.
- 这种方法有效地解决了复杂的波形模式和温度变化所带来的局限性.
- 该方法适用于处理显示共同环境或操作趋势的数据的各种SHM系统.
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