The invention relates to an ultrasonic test apparatus comprising a probe, particularly an angled probe, an ultrasonic transmitter, a receiver for echo signals, and a monitor with a display device for representing the received echo signals. The probe emits ultrasonic pulses and injects said ultrasonic pulses into a test piece at a specific angle. The ultrasonic pulses penetrate the test piece and are reflected at least once at the back wall thereof, thereby forming at least one first branch extending from the area of entry to the back wall and a second branch extending from the back wall to the area of entry. The received echo signals are represented in such a way that it is possible to recognize from which branch said echo signals originate. The invention also relates to a method for representing echo signals which are obtained with the aid of said ultrasonic test apparatus in order to non-destructively test a test piece.
https://app.acclaimip.com/pdf/CiuxZLNnh_dVK7EBVmeH-z5Qx-1kJPiTu_cyzgs/EP1576363B1
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