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Signal enhancement of the in-plane and out-of-plane Rayleigh wave components

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UNSPECIFIED (2005) Signal enhancement of the in-plane and out-of-plane Rayleigh wave components. APPLIED PHYSICS LETTERS, 87 (19). -. doi:10.1063/1.2128058 ISSN 0003-6951.

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Official URL: http://dx.doi.org/10.1063/1.2128058

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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. (C) 2005 American Institute of Physics.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Journal or Publication Title: APPLIED PHYSICS LETTERS
Publisher: AMER INST PHYSICS
ISSN: 0003-6951
Official Date: 7 November 2005
Dates:
DateEvent
7 November 2005UNSPECIFIED
Volume: 87
Number: 19
Number of Pages: 3
Page Range: -
DOI: 10.1063/1.2128058
Publication Status: Published

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