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Crack detection and assessment using a novel ultrasonic wave mode conversion technique

 
: Gebhardt, W.; Walte, F.

Iida, K.; Whittle, J.M. ; American Society for Metals -ASM-, Metals Park/Ohio; British Institute of Nondestructive Testing:
10th International Conference on NDE in the Nuclear and Pressure Vessels Industries
Metals Park/Ohio, 1990
ISBN: 0-87170-506-0
pp.235-239
International Conference on NDE in the Nuclear and Pressure Vessels Industries <10, 1990, Glasgow>
English
Conference Paper
Fraunhofer IZFP ()
Druckbehälterprüfung; Prüfkopf; Reflexionsfaktor; Rißnachweis; Tandemprüfung; Ultraschall; Wellenumwandlung

Abstract
An ultrasonic single probe inspection method, based upon mode conversion, was developed for the detection of perpendicularly oriented cracks. In comparison to the cumbersom Tandem technique this "LLT-Technique" has about the same sensitivity but has advantages in manual as well as automated inspection with regard to handling and applicability. Besides, the LLT-Technique stands out for an improved accessibility of the inspection regions, a reduced crack inclination dependency and less disturbances at cladded components.

: http://publica.fraunhofer.de/documents/PX-8772.html