TY - GEN
T1 - Automated spot weld inspection using infrared thermography
AU - Chen, Jian
AU - Zhang, Wei
AU - Yu, Zhenzhen
AU - Feng, Zhili
PY - 2013
Y1 - 2013
N2 - An automated non-contact and non-destructive resistance spot weld inspection system based on infrared (IR) thermography was developed for post-weld applications. During inspection, a weld coupon was heated up by an auxiliary induction heating device from one side of the weld, while the resulting thermal waves on the other side were observed by an IR camera. The IR images were analyzed to extract a thermal signature based on normalized heating time, which was then quantitatively correlated to the spot weld nugget size. The use of normalized instead of absolute IR intensity was found to be useful in minimizing the sensitivity to the unknown surface conditions and environment interference. Application of the IR-based inspection system to different advanced high strength steels, thickness gauges and coatings were discussed.
AB - An automated non-contact and non-destructive resistance spot weld inspection system based on infrared (IR) thermography was developed for post-weld applications. During inspection, a weld coupon was heated up by an auxiliary induction heating device from one side of the weld, while the resulting thermal waves on the other side were observed by an IR camera. The IR images were analyzed to extract a thermal signature based on normalized heating time, which was then quantitatively correlated to the spot weld nugget size. The use of normalized instead of absolute IR intensity was found to be useful in minimizing the sensitivity to the unknown surface conditions and environment interference. Application of the IR-based inspection system to different advanced high strength steels, thickness gauges and coatings were discussed.
KW - Advanced high-strength steels
KW - Infrared thermography
KW - Non-destructive testing
KW - Resistance spot welding
UR - http://www.scopus.com/inward/record.url?scp=84880681717&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84880681717
SN - 9781627089982
T3 - ASM Proceedings of the International Conference: Trends in Welding Research
SP - 148
EP - 151
BT - Trends in Welding Research - Proceedings of the 9th International Conference
T2 - 9th International Conference on Trends in Welding Research
Y2 - 4 June 2012 through 8 June 2012
ER -