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首页> 外文会议>International Conference on Technology of Architecture and Structure >Lamb waves signal analysis in structural health monitoring systems
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Lamb waves signal analysis in structural health monitoring systems

机译：结构健康监测系统中的LAMB波信号分析

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Many of the wave propagation based structural health monitoring techniques rely on some knowledge of the structure in a healthy state in order to identify damage. Baseline measurements are recorded when a structure is pristine and are stored for comparison to future data. A concern with the use of baseline subtraction methods is the ability to discern structural changes from the effects of varying environmental and operational conditions when analyzing the vibration response of a system. The use of a standard baseline subtraction technique may falsely indicate damage when environmental or operational variations are present between baseline measurements and new measurements. A procedure was outlined for the method, including excitation and recording of Lamb waves, and the use of damage detection algorithms. In this paper, several tests are performed and the results are used to help develop the damage detection algorithms previously described, and to evaluate the performance of the instantaneous baseline SHM technique. Analytical testing is first performed by feeding known input signals into each damage detection algorithm and analyzing the output data. The results of the analytical testing are used to help develop the damage detection algorithms.
机译：基于波的结构健康监测技术的许多波传播依赖于健康状态的结构的一些了解，以识别损坏。当结构是原始的时，记录基线测量值并存储与未来数据相比。使用基线减法方法的担忧是在分析系统的振动响应时，可以从不同的环境和操作条件的影响中辨别结构变化的能力。当基线测量和新测量之间存在环境或操作变化时，使用标准基线减法技术的使用可能错误地指示损坏。该方法概述了一种程序，包括羊波的激励和记录，以及使用损坏检测算法。在本文中，执行了几次测试，结果用于帮助开发先前描述的损伤检测算法，并评估瞬时基线SHM技术的性能。首先通过将已知的输入信号送入每个损坏检测算法并分析输出数据来进行分析测试。分析测试的结果用于帮助开发损坏检测算法。

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