TY - JOUR ID - TI - Modeling of 3-D Keyhole CO2 Laser Welding of Steel AU - W.K. Hamoudi AU - A.K. Hamoudi AU - S.A. Salih PY - 2010 VL - 6 IS - 1 SP - 15 EP - 23 JO - Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية SN - 18132065 23091673 AB - A mathematical 3-D model for keyhole CO2 laser welding of thick C/Mn steel sheets under variety of laser material processing conditions is presented. The analysis yields profile of the melt pool and compare it with experiments. The model combines a moving point source for the top part of the weld and a moving line source for the parallel sided region of the weld (stem). This concept produces weld profiles that have good qualitative agreement with the experiments. Mathematical model and computer program were constructed to solve two basic heat conduction equations for the moving point and line sources. The excellent match of theoretical and experimental weld profiles will make this work a good candidate for laser welding prediction in robotic networks.

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