Process Planning Method for Mask Projection Stereolithography : Design and Analysis of a freeform microfabrication system and process

ISBN-13: 9783639154535 / Angielski / Miękka / 2009 / 332 str.

Ameya Limaye

Opis

Mask Projection Stereolithography is a high resolution manufacturing process that builds parts layer by layer in a photopolymer. A MPSLA system is designed and assembled. The irradiance incident on the resin surface when a given bitmap is imaged onto it is modeled as the Irradiance model. Print-through errors occur in multi-layered builds because of radiation penetrating beyond the intended thickness of a layer, causing unwanted curing. In this research, the print through errors are modeled in terms of the process parameters used to build a multi layered part. To this effect, the Transient layer cure model is formulated, that models the curing of a layer as a transient phenomenon, in which, the rate of radiation attenuation changes continuously during exposure. The print through model is used to formulate a process planning method to cure multi-layered parts with accurate vertical dimensions. The models formulated and validated in this work are used to formulate a process planning method to build MPSLA parts with constraints on dimensions, surface finish and build time. The process planning method is demonstrated by means of a case study.

O autorze

Dr. Ameya Limaye completed his Bachelors in Mechanical
Engineering from University of Pune, India, and acquired his
Master's and Doctorate degrees in Mechanical Engineering from
Georgia Institute of Technology, Atlanta. After graduation, he
has joined Intel Corporation, where he is currently a process
engineer.