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Reaction heat effects on initial linear shrinkage and deformation in stereolithography

Hiroyuki Narahara (Department of Mechanical Systems Engineering at the Kyushu Institute of Technology, Iizuka, Fukuoka, Japan)
Fumiki Tanaka (Division of Systems and Information Engineering at the Hokkaido University, Sapporo, Hokkaido, Japan)
Takeshi Kishinami (Division of Systems and Information Engineering at the Hokkaido University, Sapporo, Hokkaido, Japan)
Satoru Igarashi (Division of Systems and Information Engineering at the Hokkaido University, Sapporo, Hokkaido, Japan)
Katsumasa Saito (Gunma Polytechnic College, Takasaki, Gunma, Japan)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 1 September 1999

1056

Abstract

In the industrial use of stereolithography, precision is always a problem. The basic phenomenon of solidification shrinkage has not been sufficiently investigated. This study aims at clarifying the initial linear shrinkage of cured resin in a minute volume. Experimental equipment has been developed which measures the time history of the single strand in situ in a stereolithography machine. An analysis model of the time history of a minute volume linear shrinkage was shown using the measured shrinkage of a cured line segment. The relation between the time history of the linear shrinkage and temperature was measured and the shrinkage in the minute volume after irradiation was found to result due to temperature variation. Deformation and linear shrinkage were measured with two scanning orders to control the thermal distribution in layer forming. The effects of thermal distribution were also observed in one layer forming.

Keywords

Citation

Narahara, H., Tanaka, F., Kishinami, T., Igarashi, S. and Saito, K. (1999), "Reaction heat effects on initial linear shrinkage and deformation in stereolithography", Rapid Prototyping Journal, Vol. 5 No. 3, pp. 120-128. https://doi.org/10.1108/13552549910278946

Publisher

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MCB UP Ltd

Copyright © 1999, MCB UP Limited

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