Akademiet for De Tekniske Videnskaber, Svejsecentralen

Sven E Iversen

Svend A Lund

Carl E Petersen

Erik T Bogen

Jorgen Dam

A three-dimensional ultrasonic scanning apparatus produces projection pictures on the surface of an object under inspection or examination and on planes perpendicular thereto. The amplitudes of the echo pulses produced by the ultrasonic scanning appartus, which uses an angle probe, are stored in a memory having at least one storage position relating to each projection of a reflecting point within the examined area. Only the highest echo amplitude originating from all the reflecting points lying on a projection line at right angles to the projection plane in question is recorded--not the highest amplitude from each reflecting point on the projection line. Thus, only those echo pulse amplitudes necessary to produce a projection picture of the object are stored in the memory thereby substantially reducing the required memory capacity.

Apparatus for recording echo pulses

In an apparatus for locating inhomogeneities in otherwise homogeneous bodies by the ultrasonic pulse-echo method an angle probe is used in connection with an acoustic signal emitter, adapted to produce an audible signal, a characteristic of which, e.g. the intensity, varies in a continuous manner with the amplitude of the reflected ultrasonic pulses.

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Charlottenlund, Denmark

Sven E Iversen