Help me analyze the sound field distortion in the phased array ultrasonic testing of thin-walled small-diameter tubes in the secondary shear wave testing method

Answer: The sound field distortion in the secondary shear wave detection method of phased array ultrasonic testing of thin-walled small-diameter tubes refers to the problem of sound field attenuation and delay inhomogeneity caused by the difference in wall thickness of the small-diameter tube when the sound wave is reflected on the surface of the small-diameter tube. . Therefore, it is necessary to consider the influence of sound field distortion during detection in order to accurately detect the defects of small-diameter pipes.