Ultrasonic scanning probe

摘要

An ultrasonic scanning probe 10 for inspecting structures for internal defects and providing a plan position display comprises a transducer 70 mounted within a block 12 of ultrasonically absorbent material, such as polyethylene, adjacent to a window 30 which may be placed in contact with a surface of the structure. The block 12 is turnable about a rotation axis normal to the window 30, while the transducer 70 is oriented at an angle to the axis so as to scan a sector of the surface as the block 12 is turned, and an attenuating coupling medium 160 occupies the space between the transducer 70 and the window 30. The scanning probe 10 may be used in wet or dry situations.