Pulsed laser spot imaging thermography and experimental data

Teng Li, Simon G Pickering, D Andrew S Rees, Darryl Almond

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Traditional pulsed thermography is unsuitable for detecting surface breaking cracks predominantly perpendicular to the sample surface. Pulsed laser spot thermal imaging is an effective alternative method. This paper presents modelling results of a full 3-D model of the technique that elucidate the roles of defect geometry and system set up in determining defect detection sensitivity. A new image processing method is also presented that has been applied to extract images of surface cracks in metal test-pieces. Both 3-D modelling and experimental results show that scanning pulsed laser spot thermography has considerable potential as a remote, non-contact imaging technique for surface cracks with openings of only a few micrometers.
Original languageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation vols 29A and 29B
PublisherAmerican Institute of Physics
Pages435-442
Number of pages8
Volume1211
ISBN (Print)9780735407480
Publication statusPublished - 2010
Event36th Annual Review of Quantitative Nondestructive Evaluation - University of Rhode Island, Kingston, USA United States
Duration: 26 Jul 200931 Jul 2009

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics

Conference

Conference36th Annual Review of Quantitative Nondestructive Evaluation
CountryUSA United States
CityUniversity of Rhode Island, Kingston
Period26/07/0931/07/09

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