Vorrichtung und Verfahren zur Detektion von Materialdiskontinuitaeten in einem Pruefkoerper

DE 10241831 B UPAB: 20040218 NOVELTY - The device has an electromagnetic ultrasound transmitter (3) with a rectangular coil and a permanent magnet used for propagation of ultrasound waves (5a) in the pipeline (1) and an ultrasound receiver (4) with a rectangular coil and a permanent magnet for reception of reflected ultrasound waves (5b). At least one of the permanent magnets is used for providing a static magnetic field in the pipeline, the longer sides of the permanent magnets extending perpendicular to the longer sides of the rectangular coils. DETAILED DESCRIPTION - An INDEPENDENT CLAIM for a material discontinuity detection method is also included. USE - The material discontinuity detection device is used for non-destructive checking of a pipeline. ADVANTAGE - Device has large measuring region in both axial and peripheral directions