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Title: On the improvement of the stereolithography (SL) process
Authors: Nee, A.Y.C 
Fuh, J.Y.H 
Miyazawa, T.
Keywords: Process and accuracy improvement
Rapid prototyping
Issue Date: 15-Jun-2001
Citation: Nee, A.Y.C, Fuh, J.Y.H, Miyazawa, T. (2001-06-15). On the improvement of the stereolithography (SL) process. Journal of Materials Processing Technology 113 (1-3) : 262-268. ScholarBank@NUS Repository.
Abstract: The successful control and operation of the stereolithograpy (SL) process depends on many parameters. These can be categorized systematically into: hardware, i.e., the construction and mode of operation of the machine; the controlling software such as the hatching pattern, error compensation and part orientation; and the material properties of the photo-polymer. The improvement of the current SL process is approached from both the software and hardware viewpoints. In the software study, the following issues are considered: (a) a correction table for compensating on the positioning accuracy; (b) STL slicing software with an editing and automatic error-correction function; (c) a direct slicing algorithm to be used on commercial CAD software; (d) the optimal part orientation software and (e) a variable slicing algorithm. For hardware and material studies, a novel process using a mixture of Aerosil silica powder and photo-polymer was developed. The resulting mixture not only reduces the requirement for support structures for the model hence shortening the model-building time, but also improves the properties of the model, such as tensile strength, shrinkage rate, etc. © 2001 Elsevier Science B.V.
Source Title: Journal of Materials Processing Technology
ISSN: 09240136
DOI: 10.1016/S0924-0136(01)00634-3
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