NDTnet 1998 Aug, Vol.3 No.8

Full-Text - Abstract

New and stronger demands on reliability of used NDE/NDT procedures and methods have stimulated the development of simulation tools of NDT. To qualify the procedures extensive experimental work on test blocks is normally required. A thorough validated model has the ability to be an alternative and a complement to the experimental work in order to reduce the extensive cost that is associated with the previous procedures.

Figure 1. The pre- and postprocessor SUNDT

The SUNDT program consists of a window based preprocessor and postprocessor together with a mathematical kernal (UTDefect) dealing with the actual mathematical modelling. The UTDefect computer code has been developed at the Division of Mechanics at Chalmers University of Technology and has beenexperimentally validated and verified [1].[2],[3]. This model employs various integral transform and integral equation techniques to model probes and the scattering by defects. In this way the frequency and some geometry limitations of the geometrical theory of diffraction[4] are avoided, still without the computer requirements that would resultfrom a volume discretization using the finite element method or the finite integration technique [5].

In the present paper a simulation tool for ultrasonic NDT (SUNDT) is briefly described together with some exemplification's of its application in some qualification processes.

References
1. Boström, A., Wirdehus, H., J. Acoust. Soc. Am., 1995, 97: 2836-2848.
2.Wirdelius, H., Bövik, P. and Bostrbm, A., Proc. of the 13th Int. Conf. on NDE in Nuclear and Pressure Vessel Industries, Kyoto, Japan, 1995, 237-243.
3. Eriksson, A. S., Boström, A. and Wirdehus, H., SKI Report 9 7:3, Swedish Nuclear Power Inspectorate, Stockholm, 1997.
4.Chapman, RX, J. Nondestr. Eval. 9, 1990, 9: 12 7-211.
5.Schmitz, E, Langenberg, K. J. and Krönig, M, Proc. of the Joint CEC OECD IAEA Specialists Meating, Petten, The Netherlands, 1994, 361-368.

Abstract Source:
Book of Abstracts, 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN: 87-986898-0-00

Full-Text Source:
Proceedings of the 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN:

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