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Shear wave generation using a spiral electromagnetic acoustic transducer

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Jian, Xiaoming, Dixon, S., Baillie, Iain, Edwards, R. S. (Rachel S.), Morrison, J. and Fan, Yichao (2006) Shear wave generation using a spiral electromagnetic acoustic transducer. Applied Physics Letters, Vol.89 (No.24). p. 244106. doi:10.1063/1.2408644

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Official URL: http://dx.doi.org/10.1063/1.2408644

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Abstract

A spiral electromagnetic acoustic transducer (EMAT) is efficient in eddy current generation and has been used for surface defect inspection using Rayleigh waves or thickness gauging based on plane waves in echo mode. Measured and calculated particle velocities and directivities are presented. It is found that the shear wave is not predominantly a plane wave. It has zero amplitude on the axis of the generation EMAT and has maximum amplitude at the critical angle. The shear wave could be used in the steel industry for both internal and surface defect inspections together with Rayleigh wave.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
Divisions: Faculty of Science > Engineering
Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Acoustic surface waves, Rayleigh waves, Eddy currents (Electric), Fluid dynamics
Journal or Publication Title: Applied Physics Letters
Publisher: American Institute of Physics
ISSN: 0003-6951
Official Date: 15 December 2006
Dates:
DateEvent
15 December 2006Published
Volume: Vol.89
Number: No.24
Page Range: p. 244106
DOI: 10.1063/1.2408644
Status: Peer Reviewed
Access rights to Published version: Open Access

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