Abstract
A conformable wedge for ultrasonic phased array transducer has been developed for the inspection of power generation components with various surface geometries. This low-cost wedge uses a standard linear phased array coupled to the pipe-work surface via a low-loss rubber-based tissue mimicking material impregnated with oil. This material has a longer usable life than hydrogel tissue mimicking material. After comparison testing between the conformable wedge and conventional rigid wedge technology was performed in terms of velocity and attenuation of longitudinal waves at temperatures from 0 to 60°C, the influence was investigated of deformation of conformable wedge on the velocity. The test reveals the conformable wedge is expected to be useful from practical point of view.
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