2003 / Solid Freeform Fabrication Proceedings
PREV and NEXT link to numerically adjacent references for this YEAR.
CONTENTS links to the title list for this YEAR's references.
Author Tiebing Chen and Yuwen Zhang Department of Mechanical Engineering New Mexico State University Las Cruces, NM 88003
Source Solid Freeform Fabrication Proceedings, 2003, pp 208-218.
Abstract Selective Laser Sintering (SLS) of metal powder is modeled as a two-dimensional melting and resolidification of a loose powder layer on top of the sintered metal layers with a moving heat source. The shrinkage induced by melting is accounted for and the problem is modeled using a temperature-transforming model. The results indicate that both the moving heat source intensity and scanning velocity have significant effects on the sintering process. Since the thermal conductivity of the sintered layer is relatively high compared with that of the loose powder, higher heat source intensity and lower scanning velocity are needed to achieve complete melting of the loose powder and bond the current layer to the existing sintered layers. A parametric study is performed and the best combinations of the processing parameters are recommended. (Auth abstract) [References: 14] XX
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
or contact:
The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu