Lamb波传播特性研究  

Study of Propagational Characteristics of Lamb Wave

作　　者：张恒萍[1] 朱传焕[1] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064

出　　处：《计测技术》2008年第5期5-9,共5页Metrology & Measurement Technology

摘　　要：应用三维弹性理论对Lamb波频散曲线进行理论建模。在Lamb波主动监测系统中,应用Gabor小波变换理论分析Lamb波信号的时延及相位角,获得了板中Lamb波的相群速度频散曲线。比较理论曲线与实验数据,证明了三维弹性理论建模方法的有效性。In this paper, the frequency dispersive curves of the Lamb waves propagating in plates are modeled using the 3-D elastic theory. In the experiments, according to the time delay and the angle of Lamb wave signals analysed by Gabor wavelet transform , the experimental dispersive curves are obtained. Compared the two dispersive curves, the 3-D elastic theory could be proved efficient.

关 键 词：LAMB波 三维弹性理论 建模 传播特性 小波变换 

分 类 号：O343[理学—固体力学] TB533[理学—力学]