Nukem Limited

Roman Koch

Gerhard Huschelrath

Thomas Kreutter

Method and device for the non-destructive testing of objects using

An array for non-destructive material testing of cylindrical workpieces such as pipes or ends thereof by means of leakage-flux measurement and if necessary electrodynamic ultrasonic excitation is proposed. A leakage-flux measuring head (56) used for leakage-flux measurement comprises at least two Hall probes (80) disposed along a line parallel and/or vertical to the magnetic field generated by a magnet (10) and forming at least one Hall probe line. In addition, the leakage-flux measuring head has at least two sliding blocks (94, 96, 98, 100) spaced apart and supportable on the workpiece, between which the Hall probes are disposed. The leakage-flux measuring head is also provided with a protective plate covering the faces of the Hall probes on the workpiece side.

Array for non-destructive material testing of cylindrical workpieces by

An electrodynamic transducer head which has at least two detachably arranged probes are allocated to one pole shoe of a magnet, and are covered by a common protective plate. The transducer head can be used for non-destructive testing of workpieces using ultrasound, for which purpose a cap of the transducer head has sliding blocks which rest on the workpiece.

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Hosbach, Germany

Roman Koch