Based on the ultrasonic guided wave technique and the dispersive waveform prediction method, a method about how to image defects in pipes is presented.
Clearly models for ultrasonic generation and propagation in anisotropic materials must include the effect of anisotropy and temperature on the dispersivewave propagation.
分析各项异性材料中超声产生和传播的模型必须包括各向异性和温度对波传播中色散的影响。
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The results show that the dispersivewave excited by these two acoustic sources have strong contrast, which are Stoneley wave for monopole and flexural wave for dipole in the lowest mode.