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

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.