斜探头的磨损对管材超声波探伤结果的影响

Effect on Ultrasonic Detection Result of Tube Flaw by Wear of Oblique Probe

在超声波探伤过程中,斜探头会受到磨损,由此会使其入射点、折射角发生改变,影响超声波探伤的准确性。介绍了超声波斜探头的选择,入射点和折射角的测定方法及在超声波探伤过程中使用探头应注意的问题。

During the operation of the ultrasonic detector the oblique probe is subject to wear, which consequently leads to the change of the incident point and the refraction angle and thus to produce some negative influence on the detection accuracy. Such aspects as the selection of the ultrasonic probe, the measuring method for the incident point and the refraction angle, and some key points for the probe during the operation of the ultrasonic detector, are all described.