1995 / Solid Freeform Fabrication Proceedings
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Author Thomas H. Pang (a), Michelle D. Guertin (b), Hop D. Nguyen (b), (a) Ciba-Geigy Corp., (b) 3D Systems
Source Solid Freeform Fabrication Proceedings, 1995, pp 170-180
Abstract Rapid Prototyping and Manufacturing (RPand M) users need to compare the accuracy of various commercially available RPand M materials and processes. A good diagnostic test for both material and the fabrication process involves a 4-inch long "letter-H" diagnostic part. This diagnostic part, known as "H-4", was developed to measure the inherent dimensional characteristics of various RPand M build materials. It is also less dependent on the calibration status of particular RPand M machines, and is excellent for the purpose of generating simple but meaningful accuracy information, which can be used to farther understand the mechanism and the modes of distortion in RPand M materials. H-4 parts were prepared and built in Stereolithography Apparatus (SLA) using Ciba-Geigy epoxy based resins SL 5170 and SL 5180, and results were compared to acrylate based SL 5149. Experimental data involving the magnitude, mechanism, and the modes of distortion for these three resins are analyzed in this paper. (Auth abstract) [References: 7]
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