The Research on the Ultrasonic Focusing and TR Thickness Test Technology

A TR and ultrasonic focusing wheel probe is designed for some special engineering testing item. Ultrasonic TR thickness testing and focusing detection can be carried out without coupling medium. With the testing system and the probe set on a control machine car, aligned and marginal testing for steel plates quality and the thickness testing of corroded pipe wall can be accomplished by dry couple method. The processing method of detection signal and the design of peripheral circuit are also introduced in this paper.