2003 / Solid Freeform Fabrication Proceedings
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Author George W. Hadipoespito, Yong Yang, Hongseok Choi, Guoqing Ning, and Xiaochun Li Department of Mechanical Engineering University of Wisconsin-Madison Madison, WI 53706
Source Solid Freeform Fabrication Proceedings, 2003, pp 13-24.
Abstract This paper describes a Digital Micromirror Device (DMD) based ultraviolet (UV) microstereolithography (u -SL) system developed for rapid prototyping and manufacturing of micro 3D structures. Characterization experiments show that the developed the DMD-based imaging system irradiates an entire photopolymer layer at once, providing reasonable curing speed and good resolution at a low cost. 2D and 3D micro parts were fabricated. High frequency ultrasonic vibration (above 20 kHz) was experimented and verified that it can be used to significantly decrease the leveling time of viscous photopolymer. Furthermore, micro parts were also fabricated in nanocomposites, which were obtained by ultrasonic mixing of the transparent photopolymer and nano-sized ceramic particles. High quality micro models fabricated by this novel process could be used for micro scale investment casting, tooling, devices, and medical applications. (Auth abstract) [References: 15] 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