TY - JOUR
T1 - Thermographic detection of surface breaking defects using a scanning laser source
AU - Burrows, S E
AU - Dixon, S
AU - Pickering, Simon G
AU - Li, T
AU - Almond, Darryl P
PY - 2011/11
Y1 - 2011/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79959987450&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/j.ndteint.2011.06.001
U2 - 10.1016/j.ndteint.2011.06.001
DO - 10.1016/j.ndteint.2011.06.001
M3 - Article
SN - 0963-8695
VL - 44
SP - 589
EP - 596
JO - NDT and E International
JF - NDT and E International
IS - 7
ER -