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Thermographic detection of surface breaking defects using a scanning laser source

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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 ISSN 0963-8695.

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Official URL: http://dx.doi.org/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 and Medicine > Engineering > Engineering
Faculty of Science, Engineering and Medicine > 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:
DateEvent
November 2011Published
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)

Data sourced from Thomson Reuters' Web of Knowledge

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