【摘要】 针对信号处理在超声导波检测正问题与逆问题中的不同作用,对若干常用信号处理方法,包括时频分析、小波变换、相关分析法等进行了综述;对希尔伯特-黄变换等方法进行了介绍,表明信号处理在提高信号的可读性、提高缺陷的检测与识别能力、表征被检对象的性能属性等方面具有重要作用．更多还原

【Abstract】 Modern signal processing has been playing an more important role in ultrasonic guided waves of nondestructive testing and evaluation. To demonstrate how to improve the readability of guided waves signal and enhance the ability of defection identification, a review and comparisons of some methods including timefrequency representations, wavelet analysis, Hilbert-Huang transforms, and cross-correlation techniques and so on have been carried out.更多还原