Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

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.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17A

Chapter

Chapter 4: NDE Sensors and Fields

Section

UT Sensors, Transducers and Fields

Pages

955-962

DOI

10.1007/978-1-4615-5339-7_123

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

New Developments in Ultrasonic NDT Modeling in CIVA

La Jolla, CA

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.