Krupp Atlas Elektronik Gmbh

Rene Krupka

Dirk Rathjen

Hubert Burggraf

A device for detecting deformations in the surface of a workpiece includes a light source for illuminating the surface of the workpiece; a detector situated at a fixed predetermined distance from the light source and a displacing arrangement for effecting a relative movement between the workpiece and the light source. The detector comprises a photoreceiver for receiving reflected light from the workpiece and for generating a first output signal having a frequency dependent from the deformation of the workpiece. The photoreceiver is position-sensitive perpendicularly to a direction of the relative movement. A frequency analyzer is operatively connected to the receiver for receiving the first output signal from the photoreceiver and for generating a second output signal when the frequency of the first output signal exceeds a cutoff frequency. There is further provided a deformation indicator operatively connected to the frequency analyzer for receiving the second output signal therefrom and for indicating a deformation in the surface of a workpiece when the second output signal is received.

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Schwabisch Gmund, Germany

Rene Krupka