A Robust Approach to Optimal Matched Filter Design in Ultrasonic Non-Destructive Evaluation (NDE)

Li, M. and Hayward, G. (2017) A Robust Approach to Optimal Matched Filter Design in Ultrasonic Non-Destructive Evaluation (NDE). In: 43rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Atlanta, GA, USA, 17-22 Jul 2016, p. 140002. ISBN 9780735414747 (doi: 10.1063/1.4974717)

Abstract

The matched filter was demonstrated to be a powerful yet efficient technique to enhance defect detection and imaging in ultrasonic non-destructive evaluation (NDE) of coarse grain materials, provided that the filter was properly designed and optimized. In the literature, in order to accurately approximate the defect echoes, the design utilized the real excitation signals, which made it time consuming and less straightforward to implement in practice. In this paper, we present a more robust and flexible approach to optimal matched filter design using the simulated excitation signals, and the control parameters are chosen and optimized based on the real scenario of array transducer, transmitter-receiver system response, and the test sample, as a result, the filter response is optimized and depends on the material characteristics. Experiments on industrial samples are conducted and the results confirm the great benefits of the method.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Li, Dr David
• Authors: Li, M., and Hayward, G.
• College/School: College of Science and Engineering > School of Engineering
• ISSN: 0094-243X
• ISBN: 9780735414747
• Published Online: 01 February 2017
• Copyright Holders: Copyright © 2017 AIP Publishing LLC
• First Published: First published in 43rd Annual Review of Progress in Quantitative Nondestructive Evaluation: 140002
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher