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Combined thermography and noncontact ultrasound inspection techniques using pulsed laser excitation
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Burrows, S. E. (Susan E.), Dixon, S., Li, T. and Almond, Darryl (2010) Combined thermography and noncontact ultrasound inspection techniques using pulsed laser excitation. AIP Conference Proceedings (No.1211). pp. 510-517. doi:10.1063/1.3362437
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Official URL: http://dx.doi.org/10.1063/1.3362437
Abstract
A combined ultrasound and thermography system has been developed for identifying surface breaking defects using a raster scanned, Q-switched, pulsed Nd:YAG laser as both a thermal and an ultrasonic source. As the thermal spot approaches a defect, the lateral flow of heat in the substrate surface is disturbed, altering the spot shape. Ultrasound waves are also disturbed; by measuring the change in signal strength and frequency distribution of the received waveform, information regarding the position and depth of the crack can be obtained. Modelling of the interaction between Lamb waves and defects has been compared with experimental data.
| Item Type: | Journal Article | ||||
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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 > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Thermography, Ultrasonics, Finite element method, Surfaces (Technology) -- Defects | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 978-0-7354-0748-0 | ||||
| ISSN: | 0094-243X | ||||
| Editor: | Thompson, DO and Chimenti, DE | ||||
| Official Date: | 22 February 2010 | ||||
| Dates: |
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| Number: | No.1211 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | pp. 510-517 | ||||
| DOI: | 10.1063/1.3362437 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Type of Event: | Conference |
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