(Dr. David Rosen, advisor)
"A Method for Understanding and Predicting StereoLithography Resolution"
StereoLithography (SLA) is a layered manufacturing process during which cross sections of a CAD model are scanned onto a liquid photopolymer by using an UltraViolet (UV) laser. SLA technology has been increasingly used to manufacture more accurate parts with finer details. Being able to make micron scale features using SLA machines is a growing desire expressed by various industries including MEMS. Before more accurate and micron scale features could be built, the SLA process resolution needs to be further understood
In this StereoLithography resolution study, a number of issues were investigated. These issues were:
It is equally as important to know what the shape of a StereoLithography cross-section
would look like before a part is built. Knowing the shape of a particular cross-section
would aid designers in foreseeing build resolution problems that might occur
during a StereoLithography build. A method based on offsetting algorithms that
will help predict what a cross-section would look like before it is built in
the horizontal platform is presented. By using this method, it will be possible
for designers to pick certain build parameters that would yield the best possible
cross-section and foresee build resolution issues.