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Defect feature extraction using surface wave interactions and time-frequency behavior

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Dutton, B. (Ben), Rosli, M. H. and Edwards, R. S. (Rachel S.) (2010) Defect feature extraction using surface wave interactions and time-frequency behavior. In: 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, University of Rhode Island, Kingston, RI, Jul 26-31, 2009. Published in: AIP Conference Proceedings, Vol.1211 (No.1). pp. 647-654. ISBN 9780735407480. doi:10.1063/1.3362455 ISSN 0094-243X.

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Official URL: http://dx.doi.org/10.1063/1.3362455

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Abstract

In this paper we exploit the interaction of ultrasonic surface waves with surface cracks in order to extract defect characteristics. An experimentally validated computer model was developed to simulate laser generated surface waves interacting with defects of several depths and angles. The Rayleigh reflection coefficient vs. crack angle and depth was explored. Amplitude and frequency behaviour at the defect interface in aluminium samples was also considered. Additionally, the phase component of the FFT was used to extract similar information. Finally, we explore the time-frequency behaviour using the Wigner transform.

Item Type: Conference Item (Paper)
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Ultrasonic testing, Rayleigh waves, Nondestructive testing, Surface waves, Surfaces (Technology) -- Defects
Journal or Publication Title: AIP Conference Proceedings
Publisher: American Institute of Physics
ISBN: 9780735407480
ISSN: 0094-243X
Editor: Thompson, DO and Chimenti, DE
Official Date: 22 February 2010
Dates:
DateEvent
22 February 2010Published
Volume: Vol.1211
Number: No.1
Number of Pages: 8
Page Range: pp. 647-654
DOI: 10.1063/1.3362455
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: European Research Council (ERC)
Grant number: 202735 (ERC)
Conference Paper Type: Paper
Title of Event: 36th Annual Review of Progress in Quantitative Nondestructive Evaluation
Type of Event: Conference
Location of Event: University of Rhode Island, Kingston, RI
Date(s) of Event: Jul 26-31, 2009

Data sourced from Thomson Reuters' Web of Knowledge

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