Intelligendt Systems & Services Gmbh & Co. Kg

Intelligendt Systems & Services Gmbh

Thomas Rehfeldt

Rainer Meier

Peter Kaluza

Jana Becker

In a method and a device for testing a weld seam (), located on the inner surface of a reactor pressure vessel (), by which the outer circumference of an instrumentation nozzle () leading into the interior of this reactor pressure vessel () is welded onto the reactor pressure vessel (), an ultrasound test probe () with a linear ultrasound transducer array () is inserted into the instrumentation nozzle (), which ultrasound transducer array () is parallel to the central axis () of the instrumentation nozzle () in terms of its longitudinal direction, and is used to couple a transmitted ultrasound signal (S) into the instrumentation nozzle () in the region of the weld seam () and to receive a reflected ultrasound signal (R).

Method and device for checking a welding seam present at one of the interior surfaces of a reactor pressure vessel

In a method for the ultrasonic testing of a workpiece () in a curved area of its surface, in particular of a workpiece () made of a fiber composite material, an ultrasonic test head () is acoustically coupled to the workpiece in this area, and includes an ultrasonic transducer arrangement () comprising a plurality (N) of individually driveable transducer elements () which are arranged next to one another. In chronologically successive test cycles, a number (n) of transducer elements () are respectively combined to form a group and are driven in a plurality of test pulses within this test cycle in a time delayed manner with respect to one another such that the transmitted ultrasound beam (-) in this test cycle is swept within a predetermined angular range (&#x3b1;), so that one of the number of echo signals, corresponding to the number of test pulses, for each group is received from different directions of the workpiece ().

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Möhrendorf, Germany

Thomas Rehfeldt