The Research on Testing the Axis of Recreational Facilities by Ultrasonic Phased Array Technology

In order to overcome the problem of testing the axes without disassembling the recreational facilities, the linear ultrasonic phased array probes with different frequency were used to detect the defects on the profile of the axis. The results showed that all axes with different size can be tested by one ultrasonic phased array probe and all the small artifical defects on the surface of the one-meter axis can be detected.