超声导波在管材中的传播特性
Propagation characteristics of ultrasonic guided-waves in pipes
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摘要: 文中简要地介绍了近年来超声导波在管中的研究现状,并对导波在管中的传播特性以及管材内径与壁厚之比变化时,对导波频散特性的影响进行了分析。结果表明:管材的内径与壁厚比变化时将对管中导波的模式行为产生很大的影响。当内径与壁厚之比很大时,圆管中波的模式行为与同厚度板中波的模式行为基本相同,可看作板材中的导波进行近似的分析。Abstract: In this paper a brief review on the researchs of ultrasonic guided-waves in pipe is made.The characteristics of guided waves in pipe are described and the influence of inner radius varying on dispersion characteristics of guided-waves are also analyzed.