A simulation-based correlation of the density and thermal conductivity of objects produced by laser sintering of polymer powders

Numerical simulation of the laser-induced formation of shapes from polymer powders is achieved using an extension of a previously developed model of n onisothermal powder sintering. The extended model mimics the Selective Lase r Sintering process which is used to produce a multiple layer part via lase r irradiation. Model predictions of the physical features and effective the rmophysical properties (porosity and thermal conductivity) of the object de monstrate sensitivity to several thermal processing parameters. Predicted v alues of the effective thermal conductivity and average porosity of the pro cessed item are reported and correlated. [S1087-1357(00)00904-7].