Method and device for void detection

The invention delivers a new constructive design of the ultrasonic transducers to enhance the usability of ultrasonic material testing. The device described in the invention is constructed with a great number of piezo electric transducers on the surface of the probe. Those piezo electric elements are placed like mosaics on a flexible surface, which is placed on a rodshaped carrier. This surface is now able to adapt to the surface of the testing body, which means that a great number of complex surfaces can be tested with this system.
The carrier includes several channels, which are able to constantly supply the ultrasonic transducers with a gel. This gel is used as the coupling agent for an opti-mized sound transfer.

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