基于波束成型的Lamb波无基线损伤识别技术研究

本文提出了一种基于波束成型的Lamb波无基线损伤识别方法,该方法利用激励-回波模式的分布式传感网络与时间窗函数进行损伤信号的提取,然后利用波束成型算法对结构进行损伤定位与成像。分别采用数值模拟和实验对该方法进行验证,结果证明所提出的方法能够有效地识别损伤

Research on Lamb wave baseline free damage identification technology based on beamforming

In this paper, a Lamb wave baseline free damage identification method based on beamforming is proposed. This method uses the distributed sensor network of the excitation echo mode and the time Window function function to extract the damage signal, and then uses the beamforming algorithm to locate and image the structure damage. The method was validated through numerical simulation and experiments, and the results showed that the proposed method can effectively identify damage