THEORETICAL AND EXPERIMENTAL STUDIES OF ULTRASONIC GUIDED WAVES PROPAGATION IN PIPES

Abstract

Abstract: Using distributed PZT transducer, ultrasonic guided waves are generated and received in a pipe. Because multiple modes of guided wave propagation are possible in pipes and these modes are generally dispersive, the specific exciting signal of a Hanning windowed toneburst with a central frequency of 70 kHz is selected for decreasing the effect of dispersion. And guided wave are generated using 16 distributed PZT transducer in a circumferential direction for suppressing flexural modes. The experimental results are good agreement with the theoretical ones.

Key words: Pipes, Frequency disperse, Modes, Ultrasonic guided waves

CLC Number:

O348

Wang Xiuyan;Wang Zhi;Jiao Jingpin;Wu Bin;He Cunfu. THEORETICAL AND EXPERIMENTAL STUDIES OF ULTRASONIC GUIDED WAVES PROPAGATION IN PIPES[J]. , 2004, 40(1): 11-16.

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THEORETICAL AND EXPERIMENTAL STUDIES OF ULTRASONIC GUIDED WAVES PROPAGATION IN PIPES

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