Kraftwerk Union Aktiengesellschaft

Klaus Ruthrof

Rudolf Korner

Rainer Meier

Georg Holzler

Jurgen Dorner

Ultrasonic testing device with a test head which includes an electromechanical transducer, especially a piezoelectric oscillator, with an ultrasonic equipment and with a shielded cable which connects the test head to the ultrasonic equipment. The test head has two electrically conducting shields which surround the transducer in cup-fashion. The two shields are connected to the outer conductors of the triple coaxial cable. The outer conductor of the cable is connected to a metal housing of the ultrasonic equipment and is grounded.

Ultrasonic testing device

A concentric three-conductor cable includes an inner conductor and outer conductors formed of braided strands, and insulating material separating the outer conductors from each other and from the inner conductor, each the other conductors being formed of a plurality of layers and the d-c resistance of the outer conductors being several times smaller than the d-c resistance of said inner conductor.

Concentric three-conductor cable

Test equipment for the detection and analysis of material faults in a test piece, including a test head, an electrical remotely controlled manipulator for moving the test head in at least two degrees of freedom, a device connected to the test head for supplying the test head and evaluating signals thereof, a display connected to the test head for measuring test results thereof, a device for providing the manipulator with a testing program for automatically following a predetermined path at the surface of the test piece, an electronic transmission system connected to the manipulator, a device connected to the electronic transmission system for simulating the test piece, and a remote controlled hand-operated guide element disposed adjacent to the display in the simulating means for controlling the test head in correspondence to manual operation.

Growing community of inventors

Erlangen, Germany

Klaus Ruthrof