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Thermographic detection of surface breaking defects using a scanning laser source


Reference:

Burrows, S. E., Dixon, S., Pickering, S. G., Li, T. and Almond, D. P., 2011. Thermographic detection of surface breaking defects using a scanning laser source. NDT & E International, 44 (7), pp. 589-596.

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Official URL:

http://dx.doi.org/10.1016/j.ndteint.2011.06.001

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.

Details

Item Type Articles
CreatorsBurrows, S. E., Dixon, S., Pickering, S. G., Li, T. and Almond, D. P.
DOI10.1016/j.ndteint.2011.06.001
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
Research CentresMaterials Research Centre
RefereedYes
StatusPublished
ID Code24999

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