J. Phys. IV France
Volume 120, December 2004
Page(s) 279 - 290

J. Phys. IV France 120 (2004) 279-290

DOI: 10.1051/jp4:2004120032

Estimation of a heat source by using the measured temperatures and micrographic informations; application to an electron beam welding process

J. Guo1, P. Le Masson1, E. Artioukhine2, T. Loulou3, P. Rogeon1, D. Carron1, M. Carin1, M. Dumons1 and J. Costa1

1  LET2E/ETM, Université de Bretagne Sud, C.U.R.S.T., Bd. Flandre Dunkerque, 56325 Lorient Cedex, France
2  Institut FEMTO-ST, Département CREST, CNRS UMT 6174, 2 avenue Jean Moulin, 90000 Belfort, France
3  Centre Énergétique Énvironnement, École des Mines d'Albi, Carmaux, 81013 Albi, France

This paper is concerned with the estimation of a heat source applied in the electron beam welding process by using the micrographic information (hardness, optical micrograph...) and temperature measurements in solid phase. The aim is to identify the energy distribution which is applied in the liquid and vapor zones. This identification is realized at each time in a transversal plan perpendicularly to the welding axis. For this work, the goal is to analyze the feasibility of the estimation. So we don't use noise with the theoretical measurements. At last, the iterative regularization method will be used for this two-dimensional metallurgical inverse heat transfer problem.

© EDP Sciences 2004