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Analytical examination of temporal and frequency domain interference due to acoustic birefringence in thin sheets using electromagnetic acoustic transducers (EMATs)
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Fletcher, M. P., Dixon, S. and Rowlands, G. (George) (2008) Analytical examination of temporal and frequency domain interference due to acoustic birefringence in thin sheets using electromagnetic acoustic transducers (EMATs). In: 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, CO, Jul 22-27, 2007. Published in: Review of Progress in Quantitative Nondestructive Evaluation, AIP Conference Proceedings, Volume 975 pp. 828-834. ISBN 978-0-7354-0494-6. doi:10.1063/1.2902749 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.2902749
Abstract
In rolled metal sheet the through thickness shear wave energy is steered into two orthogonal polarisations, parallel and perpendicular to the sheet's rolling direction. Ultrasonic velocity measurements used to determine the orientation distribution coefficients in thin sheets can be obtained from the fast Fourier Transform of the time domain signal. It is observed that the data obtained using a linearly polarised EMAT does not correspond with that obtained using a radially polarised EMAT. An analytical model was developed which explains the source of the effect from the transform.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Ultrasonic transducers, Ultrasonics, Refraction, Double | ||||
| Series Name: | AIP Conference proceedings | ||||
| Journal or Publication Title: | Review of Progress in Quantitative Nondestructive Evaluation | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 978-0-7354-0494-6 | ||||
| ISSN: | 0094-243X | ||||
| Official Date: | 2008 | ||||
| Dates: |
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| Volume: | AIP Conference Proceedings, Volume 975 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | pp. 828-834 | ||||
| DOI: | 10.1063/1.2902749 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 34th Annual Review of Progress in Quantitative Nondestructive Evaluation | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Golden, CO | ||||
| Date(s) of Event: | Jul 22-27, 2007 |
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