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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 67
COMPUTATIONAL TECHNIQUES FOR MATERIALS, COMPOSITES AND COMPOSITE STRUCTURES Edited by: B.H.V. Topping
Paper I.7
A Simulation Model for Direct Selective Laser Sintering of Metal Powders X.C. Wang and J.P. Kruth
Department of Mechanical Engineering, Catholic University of Leuven, Leuven, Belgium X.C. Wang, J.P. Kruth, "A Simulation Model for Direct Selective Laser Sintering of Metal Powders", in B.H.V. Topping, (Editor), "Computational Techniques for Materials, Composites and Composite Structures", Civil-Comp Press, Edinburgh, UK, pp 57-71, 2000. doi:10.4203/ccp.67.1.7
Abstract
Selective laser sintering (SLS) of metal powders to produce
3D parts is a new technology. In order to improve the SLS
process, it is necessary to investigate the influence of
processing and material parameters. An analytical ray tracing
model is developed to simulate the energy absorption and
penetration in SLS. The model is applied to a Fe-Cu powder
mixture, irradiated by Nd:YAG or by CO2 laser. It gives an
evaluation of the total energy incoupling and optical
penetration of the laser beam in powders and an estimation of
the sintering zone dimension. The simulation results will help
us to get a better understanding of the physical phenomena
involved, to identify the processing window and to optimize
the SLS process.
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