Optimal Parameters of Guided Waves Non-destructive Testing in Pipes Based on Total Energy Density Distribution
Ta Dean(1), Liu Zhenqing(2), He Pengfei(2)
(1,Department of Electronic Engineering, Fudan University, Shanghai 200433, China)
(2, Institute of Acoustics, Tongji University, Shanghai 200092, China)

Abstract: The displacement and stress amplitude component distributions have been used to choose guided waves mode and its frequency-thickness products of ultrasonic Nonª²Destructive Testing (NDT) in pipes, but it is inappropriate in some cases. The Total Energy Density (TED) distribution is proposed to choose the optimal guided waves and its frequency-thickness products of NDT in pipes, and is compared with the displacement and stress distributions. Besides, hybrid boundary element is used to verify the validity of results. The results show that TED distribution is an effective parameter, which can be used to choose optimal guided waves and its frequency-thickness products of NDT in pipes.
Keywords: total energy density, pipes, ultrasonic guided waves, non-destructive testing.