Quantitative infrared analysis of welding processes: temperature measurement during RSW and CMT-MIG welding
Source abstract
Abstract
This article deals with temperature characterisation by infrared thermography during welding. To demonstrate the versatility of this technique, two welding processes were investigated with different materials: cold metal transfer metal inert gas welding of al alloy and resistance spot welding of galvanised steel. Two experimental methods were used to characterise temperature without requiring implementation of thermocouples. The validity of these methods is demonstrated by metallurgical characterisations. The error on the measured values of temperature is assessed regarding the initial uncertainty on the apparent surface emissivity. The results show that it is possible to obtain absolute temperature values, cooling rates and informative visualisation of temperature gradients with a reasonable uncertainty.
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Research context
OpenAlex topics: Thermography and Photoacoustic Techniques · Welding Techniques and Residual Stresses · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institut des Matériaux Jean Rouxel, UMR 6502, Site de la Chantrerie, BP50609, Nantes F-44306, France
ArcelorMittal R&D, Automotive products, Voie Romaine, BP30320, Maizières-lès-Metz F-57283, France
Université Paris-Sud, ICMMO, CNRS UMR8182, Laboratoire de Physico-Chimie de l’État Solide, Orsay Cedex 91405, France
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