Vorrichtung und Verfahren zum Auffinden von Fehlstellen, insbesondere in Form von Materialrissen, in einem rotationssymmetrischen Pruefling aus einem zumindest metallische Materialanteile aufweisenden Werkstoff

DE 10304270 A UPAB: 20041001 NOVELTY - Ultrasonic device for detecting surface defects, e.g. cracks, in at least partially metallic components, e.g. pipes. The inventive device comprises electromagnetic ultrasonic transmitter and ultrasonic receiver (EMUS). The transmitter emits horizontally polarized, or surface, transverse waves that are detected by the receiver. The waves are transmitted in both directions. Transmitter and receiver are positioned in the same plane of the test piece. USE - Non-destructive detection of surface defects in metallic components, especially pipes, using electromagnetic ultrasonic transducers. ADVANTAGE - Use of transverse surface waves means a whole pipe section can be examined without the probes having to be scanned over the whole surface