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The accuracy of acoustic birefringence shear wave measurements in sheet metal

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Dixon, S., Fletcher, M. P. and Rowlands, G. (George). (2008) The accuracy of acoustic birefringence shear wave measurements in sheet metal. Journal of Applied Physics, Vol.104 (No.11). p. 114901. ISSN 0021-8979

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Official URL: http://dx.doi.org/10.1063/1.3033395

Abstract

In rolled metal sheet the through thickness shear wave energy is steered into two orthogonal polarizations, 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 polarized electromagnetic acoustic transducer (EMAT) do not correspond with that obtained using a radially polarized EMAT. An analytical model has been developed, which explains the source of this effect from the using the fast Fourier transform.

Item Type:

Journal Article

Subjects:

Q Science > QC Physics

Divisions:

Faculty of Science > Engineering
Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Sheet-metal -- Mathematical models, Shear waves -- Mathematical models, Refraction, Double -- Mathematical models

Journal or Publication Title:

Journal of Applied Physics

Publisher:

American Institute of Physics

ISSN:

0021-8979

Official Date:

1 December 2008

Dates:

Date	Event
1 December 2008	Published

Volume:

Vol.104

Number:

No.11

Number of Pages:

Page Range:

p. 114901

Identification Number:

10.1063/1.3033395

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

References:

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14M.P. Fletcher and S. Dixon, Rev. Prog. Quant. Nondestr. Eval. 26B, 1244 (2007).

URI:

http://wrap.warwick.ac.uk/id/eprint/28717

Data sourced from Thomson Reuters' Web of Knowledge

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