TY - JOUR A1 - Unnikrishnakurup, Sreedhar A1 - Kidangan, R. T. A1 - P. Vengara, N. A1 - Balasubramaniam, Krishnan A1 - Rajagopal, P. A1 - Phani Prabhakar, K. V. A1 - Padmanabham, G. T1 - Application of infrared thermography technique for the monitoring of cold metal transfer (CMT) joining of aluminium to galvanized steel T2 - The e-journal of nondestructive testing & ultrasonics N2 - In this study, the feasibility of using non-contact Infrared thermography as a potential tool to monitor the CMT welding process is explored. The presence of internal defects such as porosity, lack of filler material deposition and formation of improper weld bead produce perturbations in the surface temperature which can be identified using an Infrared thermography technique. We present recent results obtained from online monitoring of the the dissimilar joining using CMT weld brazing of Aluminum and Steel using a transmission mode measurement approach. The effect of loss of zinc coating on the weldability of the cold metal transfer joining of aluminum to galvanised steel was investigated. A correlation between measured online thermal indications with the weld anomalies is successfully attempted and the results are compared with the conventional post-weld NDT inspection methods. PB - NDT.net CY - Kirchwald T2 - 19th World Conference on Non-Destructive Testing (WCNDT 2016) CY - Munich, Germany DA - 13 June 2016 KW - Infrared thermography KW - CMT welding KW - Weld defects KW - Online monitoring PY - 2016 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/38915 AN - OPUS4-38915 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-389155 UR - http://ndt.net/?id=19475 SN - 1435-4934 VL - 21 IS - 7 SP - 1 EP - 8 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany