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Enhancement of ultrasonic surface waves at wedge tips and angled defects
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Edwards, R. S. (Rachel S.), Dutton, B. (Ben), Clough, A. R. and Rosli, M. H. (2011) Enhancement of ultrasonic surface waves at wedge tips and angled defects. Applied Physics Letters, Vol.99 (No.9). 094104. doi:10.1063/1.3629772 ISSN 0003-6951.
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WRAP_Edwards_0271116-px-181011-wedgepreprintfinal.pdf - Accepted Version - Requires a PDF viewer. Download (441Kb) |
Official URL: http://dx.doi.org/10.1063/1.3629772
Abstract
The behaviour of sound waves interacting with wedges has attracted interest from researchers in geophysics and non-destructive testing. We consider here the near-field behaviour of Rayleigh waves incident on wedges and surface-breaking defects which propagate at an angle to the surface, such as rolling contact fatigue on rails. It has been shown that, for a detection point on the edge of the crack tip, a very large signal enhancement is observed for shallow angles. We explain this behaviour through considering the effect of the defect geometry, with changes in the frequency thickness product leading to mode-conversion of the incident Rayleigh wave.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Rayleigh waves | ||||
Journal or Publication Title: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0003-6951 | ||||
Official Date: | August 2011 | ||||
Dates: |
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Volume: | Vol.99 | ||||
Number: | No.9 | ||||
Page Range: | 094104 | ||||
DOI: | 10.1063/1.3629772 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 18 December 2015 | ||||
Date of first compliant Open Access: | 18 December 2015 | ||||
Funder: | European Research Council (ERC) | ||||
Grant number: | 202735 (ERC) |
Data sourced from Thomson Reuters' Web of Knowledge
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