Development of Ultrasonic Testing System for Large Diameter Hollow Shaft

Most of large-size rotary machines are equipped with hollow shafts. The shafts must be tested by NDT system regularly. In the paper, ultrasonic testing system of hollow shaft is designed and developed in China for the first time. Structure and principle of mechanism in the system are described chiefly. Finally, the system is used for to test one kind of domestic hollow shaft. Testing results show that performance of the system is up to imported equipment.