New Developments in Ultrasonic NDT Modeling in CIVA

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1998
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Lhémery, Alain
Calmon, Pierre
Raillon, Raphaële
Paradis, Luc
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

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In quantitative ultrasonic nondestructive testing (NDT), modeling the forward problem is an essential step forward for interpreting experimental data, the ultimate goal of NDT. Both numerical or approximate methods are developed. They do not fulfill the same requirements. If simulations are used for research and engineering studies (optimal transducer design, study of new configurations, complex data analysis…), intensive use of the models is sought. Only approximate ones offer the necessary high computing performances. Ultrasonic modeling at the French Atomic Energy Commission (CEA) is based onto continuous developments of two models covering realistic commonly encountered NDT configurations [1]. The associated softwares are implanted in the CIVA system developed at CEA for processing and imaging multiple technique NDT data [2]. Champ-Sons[3, 4] is dedicated to the prediction of ultrasonic fields radiated by arbitrary transducers. Méphisto[5] simulates the testing of a piece by transducer scanning in predicting the echo-structures arising from defects and piece boundaries. Thanks to the CIVAsystem, predictions are displayed using the same imaging tools as for measured data. The present paper aims at presenting new capabilities and tools of the models recently implemented in CIVA.

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Thu Jan 01 00:00:00 UTC 1998