1、The application of automatic ultrasonic flaw detection for steel plate in the medium plate plant of chongqing steel group

2、The theory and method of signal coupling in ultrasonic flaw detection have filled the gap in China.

3、The supersonic flaw detection technology for the wheel seat inlaid part of the disc braking wheelsets for speed increased passenger cars is described.

4、Based on a data acquisition system for ultrasonic flaw detection, the paper describes the effect of interference on data acquisition systems and methods for the suppression of interference.