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