%0 Journal Article
%T Estimation of heat flux parameters during static gas tungsten arc welding spot under argon shielding
%+ Assemblages Soudés (AS)
%A Unnikrishnakurup, Sreedhar
%A Rouquette, Sébastien
%A Soulié, Fabien
%A Fras, Gilles
%< avec comité de lecture
%@ 1290-0729
%J International Journal of Thermal Sciences
%I Elsevier
%V 114
%P 205-212
%8 2017
%D 2017
%R 10.1016/j.ijthermalsci.2016.12.008
%K Gas tungsten arc welding
%K Numerical simulation of welding
%K Heat flux estimation
%K Inverse heat transfer problem
%Z Engineering Sciences [physics]/Chemical and Process Engineering
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]Journal articles
%X A multi-physics modelling of a static Gas Tungsten Arc Welding (GTAW) operation has been established in order to estimate the heat flux exchanged between the arc plasma and the work-piece. The heat flux was described with a Gaussian function where two parameters required to be estimated: process efficiency and radial distribution. An inverse heat transfer problem (ihtp) has been developed in the aim to estimate these parameters from experimental data. Levenberg-Marquardt algorithm was used as the regularization method in addition to an iterative process. The experiment consisted in a static spot weld with GTAW process. The weld spot was on for 5 s under Argon shielding gas, 2.4 mm pure tungsten electrode on a SS304L disc. Temperatures were measured with thermocouples and weld pool growth monitored with a high speed camera. The experimental data were used to solve the ihtp what led to values such as 0.7 for process efficiency and average radial distribution of 1.8 mm.
%G English
%2 https://hal.science/hal-01576966/document
%2 https://hal.science/hal-01576966/file/Art_Souli%C3%A9_al_Estimation_heat_flux_parameters_2017.pdf
%L hal-01576966
%U https://hal.science/hal-01576966
%~ CNRS
%~ LMGC
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021