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Signal enhancement of the in-plane and out-of-plane Rayleigh wave components
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Edwards, R. S. (Rachel S.), Jian, X., Fan, Y. and Dixon, S. (2005) Signal enhancement of the in-plane and out-of-plane Rayleigh wave components. Applied Physics Letters, Vol.87 (No.19). p. 194104. doi:10.1063/1.2128058 ISSN 0003-6951.
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Official URL: http://dx.doi.org/10.1063/1.2128058
Abstract
Several groups have reported an enhancement of the ultrasonic Rayleigh wave when scanning close to a surface-breaking defect in a metal sample. This enhancement may be explained as an interference effect where the waves passing directly between source and receiver interfere with those waves reflected back from the defect. We present finite element models of the predicted enhancement when approaching a defect, along with experiments performed using electromagnetic acoustic transducers sensitive to either in-plane or out-of-plane motion. A larger enhancement of the in-plane motion than the out-of-plane motion is observed and can be explained by considering ultrasonic reflections and mode conversion at the defect.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
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): | Aluminum, Finite element method, Transducers, Rayleigh waves, Electromagnetism | ||||
Journal or Publication Title: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0003-6951 | ||||
Official Date: | 1 November 2005 | ||||
Dates: |
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Volume: | Vol.87 | ||||
Number: | No.19 | ||||
Page Range: | p. 194104 | ||||
DOI: | 10.1063/1.2128058 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Grant number: | GR/S24435/01 (EPSRC) |
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