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超声导波检测技术的研究进展


 

超声导波检测技术的研究进展

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周正干,冯海伟

(北京航空航天大学机械工程及自动化学院,北京100083)


    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。
    关键词:超声检测;导波;频散特性;有限元;边界元;信号处理
    中图分类号:TG115. 28     文献标识码:A文章编号:100026656 (2006) 0220057207


Progress in Research of Ultrasonic Guided Wave Testing Technique
ZHOU Zheng2gan , FENG Hai2wei
(School of Mechanical Engineering and Automation , Beijing University of Aeronautics and Astronautics , Beijing 100083 , China)
Abstract : The recent advances in ult rasonic guided wave testing technique are summarized. Firstly , the dispersecharacteristics and the related theoretical result s of the guided waves in different materials and distinct st ructures areint roduced. Then , based on the st ructure of the guided waves , the dist ribution of the energy and displacement ofguided waves is analyzed. Lastly , some new techniques of numerical analysis and signal processing for guided wavenondest ructive testing are described.
Keywords :Ult rasonic testing ; Guided wave ; Disperse characteristic ; Finite element ; Boundary element ; Signal

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