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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. ISSN 0094-243X. doi:10.1063/1.3362455
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Official URL: http://dx.doi.org/10.1063/1.3362455
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) | ||||
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| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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| 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: |
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| 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 |
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