【摘要】 综述近年来超声导波检测研究的最新进展。介绍导波在不同材料和结构中的频散特性及与之相关的理论成果。从导波的结构出发,分析了导波在介质中能量与位移的分布。论述了导波检测技术领域中数值分析方法和信号处理方面的一些新技术。更多还原

【Abstract】 The recent advances in ultrasonic guided wave testing technique are summarized.Firstly,the disperse characteristics and the related theoretical results of the guided waves in different materials and distinct structures are introduced.Then,based on the structure of the guided waves,the distribution of the energy and displacement of guided waves is analyzed.Lastly,some new techniques of numerical analysis and signal processing for guided wave nondestructive testing are described.更多还原