Analysis and Discussion of Steel Pipe-Encased Concrete Defects by Ultrasonic Inspection

Combining with case studies on engineering application, the discussion on steel pipe-encased concrete defects during ultrasonic inspection was carried out. Some points to be noted in the ultrasonic testing process were put forward. The waveform characteristics of steel pipe-encased concrete defects and the key problems during defects analysis were summarized. The influence of the pipe wall thickness on the accuracy of defect detection can be reduced by sound time correction.