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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 ISSN 0003-6951.
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Official URL: http://dx.doi.org/10.1063/1.2408644
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 | ||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |
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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): | 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: |
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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 (Creative Commons) |
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