2003 / Solid Freeform Fabrication Proceedings
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Author Kun Dai, Xiaoxuan Li, Leon L. Shaw Department of Metallurgy and Materials Engineering Institute of Materials Science University of Connecticut Storrs, CT 06269, USA
Source Solid Freeform Fabrication Proceedings, 2003, pp 233-245.
Abstract A three-dimensional thermal finite element model including the effect of the powder-to- solid transition has been developed to investigate the transient temperature distribution during laser densification of dental powder bed for the layer-by-layer fabrication. The model encompasses the effects of the temperature-and porosity-dependent thermal conduction and radiation as well as the temperature-dependent natural convection. The simulation result is compared with the experiments which establish the temperature dependence of the dental porcelain microstructure and utilize this dependence to construct the temperature distribution profile. It is found that the trend of the simulation result matches the experiments very well. Keywords:Dental restoration, Laser processing, Finite element modeling, Thermal analyses, Powder melting and solidification. (Auth abstract) [References: 37] 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