Ge Inspection Technologies, Gmbh

Agfa Ndt Gmbh

Wolf Kleinert

Paul Buschke

Horst Guenter Thum

The invention relates to a method for representing echo signals that are obtained with the aid of an ultrasonic test apparatus used for non-destructively testing a test piece. Said ultrasonic test apparatus comprises a probe, especially an angled probe, a monitor with a display device for representing the received echo signals in an cross-sectional image such that at least one front face and a back wall of the test piece can be recognized. A flaw is detected from different arrangements of the angular probe, represented, and an error signal is determined. The test images are stored and then represented in a superimposed manner in an evaluation image such that the first and the second error signal can be recognized.

Method of evaluating ultrasonic signals of a flaw in a workpiece

The invention relates to an ultrasonic probe comprising: &mdash;a housing ( ), which accommodates an ultrasonic transducer and has a contact surface for making contact with the surface ( ) of a body ( ) to be inspected; &mdash;at least one digital camera ( ), which is allocated to the housing ( ) and which is aligned in such a way that it registers the surface ( ) of the body ( ) and supplies a respective electronic image of sub-sections of the surface ( ) of the body ( ) at intervals; &mdash;a circuit for image processing ( ), which has an image memory ( ) for at least one electronic image that has been registered by the digital camera ( ). Said circuit also comprises a comparator ( ) that compares two electronic images of the body ( ) to be inspected, registered by the digital camera ( ) at different times and that determines the displacement of the housing ( ) in relation to the surface ( ); and a displacement memory ( ), which contains the displacement of the housing ( ) and the current position of the housing ( ) in relation to the original location ( ).

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Bonn, Germany

Wolf Kleinert