TY - GEN
T1 - High temperature full-field strain measurement based on digital image correlation during arc welding
AU - Zhou, X.
AU - Chen, H. B.
AU - Chen, J.
AU - Chen, S. B.
AU - Feng, Zhili
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/11/4
Y1 - 2016/11/4
N2 - Experiments for measuring high temperature full-field strain were conducted during GTAW welding process using digital image correlation (DIC) technology. A special visual sensor system was equipped with image acquisition module. In order to reduce the influence of intense arc interference, a special laser-based illumination and filtering system was utilized. The in situ total strain close to the fusion line was measured during arc welding process. According to the total strain measured by DIC method and thermal strain calculated by the coefficient of thermal expansion, the mechanical strain was obtained, illustrating the sum of elastic and plastic strain distribution and deformation in the heated affected zone of the joint. Results showed that there remained compressive strain in both horizontal and vertical direction near the welding joint after welding. It demonstrated that full-field strain measurement could be achieved by DIC method during in situ arc welding.
AB - Experiments for measuring high temperature full-field strain were conducted during GTAW welding process using digital image correlation (DIC) technology. A special visual sensor system was equipped with image acquisition module. In order to reduce the influence of intense arc interference, a special laser-based illumination and filtering system was utilized. The in situ total strain close to the fusion line was measured during arc welding process. According to the total strain measured by DIC method and thermal strain calculated by the coefficient of thermal expansion, the mechanical strain was obtained, illustrating the sum of elastic and plastic strain distribution and deformation in the heated affected zone of the joint. Results showed that there remained compressive strain in both horizontal and vertical direction near the welding joint after welding. It demonstrated that full-field strain measurement could be achieved by DIC method during in situ arc welding.
KW - arc welding
KW - digital image correlation
KW - full-field strain measurement
UR - http://www.scopus.com/inward/record.url?scp=85006992612&partnerID=8YFLogxK
U2 - 10.1109/ARSO.2016.7736282
DO - 10.1109/ARSO.2016.7736282
M3 - Conference contribution
AN - SCOPUS:85006992612
T3 - Proceedings of IEEE Workshop on Advanced Robotics and its Social Impacts, ARSO
SP - 203
EP - 207
BT - 2016 IEEE Workshop on Advanced Robotics and its Social Impacts, IEEE ARSO 2016
PB - IEEE Computer Society
T2 - 2016 IEEE Workshop on Advanced Robotics and its Social Impacts, IEEE ARSO 2016
Y2 - 7 July 2016 through 10 July 2016
ER -