结构损伤在线监测回波信号处理方法研究*

摘要

Structural damage monitoring signal processing method based on ultrasonic echo wave has the characteristic of simpleness, rapidness and effectiveness, which satisfies the real time damage monitoring require-ment. In accordance with the difference of data analysis transform domain, the review on research and develop-ment status of three kinds of damage signal transform method, which are frequency, time-frequency and time-space domain, are summarized. The classification, prin-ciple, application field and achievement in domestic and international damage monitoring domain of each signal processing method are analyzed emphatically. At the end, the advantage and disadvantage of each method are summarized. And according to the specific condition of damage monitoring signal processing, the problems to be solved urgently are analyzed and prospected.%基于超声波回波信号分析的结构损伤在线监测方法具有简单、快速、有效的特点，满足结构损伤在线监测的实时性要求。按照数据分析处理变换域的不同，分别对频率域、时频域和时空域3类损伤信号变换方法的国内外研究发展现状进行了总结和归纳，并着重分析了各类信号处理方法的分类、原理、应用领域，以及在国内外损伤在线监测领域所取得的成果。最后对各类方法的优缺点进行了总结，并针对损伤监测信号处理的具体情况，对目前亟待解决的问题进行了分析和展望。