NDTnet 1998 Aug, Vol.3 No.8

Abstract

The standard analysis of ultrasonic results is based on the B. C, D views and the experience of the UT inspector and analyst. In certain occasions, due to both the geometric configuration and the actual defectology, the number of ultrasonic signals present is high and the analysis of ultrasonic data could become a difficult task.

Two approaches are envisaged to manage this problematic and to reduce the limitations of the operators:

Simulation by Ray Tracing programs to assist the operator in the inspection preparation and to confirm the experimental results and interpretations. It consists of a module to simulate ultrasonic ray path trajectories on any 3D geometry, into a CAD environment. The module allows to define the configuration of interest and defects inside it, and to obtain the coverage and,in general, the amplitude response estimation of the postulated ultrasonic techniques.

Automatic classifier of ultrasonic indications. The programme analyses the ultrasonic signals, to extract relevant features of them, and following a pattern recognition approach classifies these into different classes, as defect/no defect or indication type 1, type 2, etc.

In this paper, first, characteristics of these modules will be described. It will follow examples of application of these modules on actual inspection topics stating also the advantages of using these tools in comparison with the standard approach.

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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