| 摘要 |
PROBLEM TO BE SOLVED: To ensure efficient inspection even if the forward and rear ends of a planar test object are deformed obliquely by providing first and second scanning mechanisms for scanning an ultrasonic probe in a specified direction. SOLUTION: An ultrasonic flaw detection system for a planar test object 1 being carried straight comprises a first scanning mechanism 12 having Y scanning axis disposed on a truck 4 on the side closest to the carry-out side while holding a probe head B1, and a second scanning mechanism 13 having Y scanning axis disposed on the truck 4 on the side closest to the carry-in side while holding a probe heads B7, B8. At first, the heads B8, B9 touches the object 1 to inspect the longitudinal end part. Carriage is interrupted when the forward end of the test body 1 reaches the head B1 and the heads B1 through B7 touch the object 1 before the truck 4 performs X scanning. When the forward and rear end of the object 1 are deformed obliquely, the scanning mechanisms 12, 13 perform Y scanning. The number of mechanisms for touching/ separating the object 1 can be decreased by coupling adjacent heads through a ginbal mechanism, or the like. |
