| 摘要 |
A wheel probe for use on a pipeline inspection vehicle for the purpose of ultrasonically inspecting the wall of the pipe, the wheel probe comprising a solid annular rim (22) made of a non-deformable material through which sound will pass, and side members (24) which together with the rim (22) define a hollow chamber, an ultrasonic transducer or transducers (31) located within the chamber and positioned adjacent the inside surface of the rim (22) for directing and receiving sound through the rim (22), and the space between the transducers (31) and the rim (22) being filled with an acoustic coupling liquid, and a solid resilient tyre member (32) mounted on the outside surface of the rim (22). |
