Burrows, S. E. (Susan E.), Dixon, S., Pickering, S. G., Li, T. (Teng) and Almond, Darryl (2011) Thermographic detection of surface breaking defects using a scanning laser source. NDT & E International, Vol.44 (No.7). pp. 589-596. doi:10.1016/j.ndteint.2011.06.001

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Abstract

Surface breaking defects are detected using a scanning laser source to deposit heat into a sample surface. Any lateral flow of heat is disturbed by such a defect, with a change in thermal spot shape being detected by an infrared camera. An apparent increase in temperature as the laser passes over a defect is due to a localised change in emissivity, allowing defects to be distinguished from surface markings. Defects have been detected in both stainless steel and aluminium.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Engineering Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Thermography, Nondestructive testing
Journal or Publication Title:	NDT & E International
Publisher:	Elsevier Sci Ltd.
ISSN:	0963-8695
Official Date:	November 2011
Dates:	Date Event November 2011 Published
Volume:	Vol.44
Number:	No.7
Page Range:	pp. 589-596
DOI:	10.1016/j.ndteint.2011.06.001
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC), Rolls-Royce Group plc, RWE Energie (Firm), UK Research Centre in Nondestructive Evaluation (RCNDE), National Nuclear Laboratory (Great Britain)

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