Dutton, B. (Ben), Clough, A. R., Rosli, M. H. and Edwards, R. S. (Rachel S.) (2011) Exploring surface wave interaction with angled defects in the near and far field. In: 2nd International Symposium on Laser-Ultrasonics – Science, Technology and Applications, Talence, France, 5–8 July 2010. Published in: Journal of Physics: Conference Series, Vol.278 (No.1). 012011. doi:10.1088/1742-6596/278/1/012011 ISSN 1742-6596.

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Abstract

This paper explores some effects that occur when using laser ultrasound to scan defective samples. Surface defects can often propagate at an angle to the surface; however, for calibration, slots machined normal to the surface of the sample are typically used. Several interesting angle-dependent effects are observed when Rayleigh waves interact with angled surface defects, and are explored here using measurements and models for a scanning laser detector (SLD) or scanning laser line source (SLLS) scanned across the defect. Reflection and transmission coefficients are calculated for different crack angles and lengths. Additionally, interesting angle-dependent effects are observed in the Rayleigh wave amplitude and frequency enhancements in the near field when using SLD or SLLS.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH):	Surface waves, Interfaces (Physical sciences), Surfaces (Physics), Thin films, Condensed matter, Surfaces (Technology) -- Defects, Rayleigh waves
Journal or Publication Title:	Journal of Physics: Conference Series
Publisher:	Institute of Physics Publishing Ltd.
ISSN:	1742-6596
Official Date:	2011
Dates:	Date Event 2011 Published
Volume:	Vol.278
Number:	No.1
Page Range:	012011
DOI:	10.1088/1742-6596/278/1/012011
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
Conference Paper Type:	Paper
Title of Event:	2nd International Symposium on Laser-Ultrasonics – Science, Technology and Applications
Type of Event:	Conference
Location of Event:	Talence, France
Date(s) of Event:	5–8 July 2010

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