Automated feature extraction for orientation and slicing in microlamination Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/f7623g032

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  • The research is about developing a computerized design system for microtechnology-based energy, and chemical systems (MECS). MECS devices are a part of microfabrication, which primarily focuses on taking advantage of the extremely high rates of heat and mass transfer available in microstructures. It typically consists of intricate arrays of components interconnected within a single block of metal, ceramic, or polymeric material. In terms of size, MECS devices are in-between micro-scale and macro-scale fabrication, sometimes called mesoscale manufacturing. The MECS devices are built by using the microlamination process. In contrast to conventional manufacturing, microlamination process builds the product layer by layer, and joins those layers into a device by a bonding process. The final shape of a MECS device will dictate how each layer should be patterned and how it will be assembled together. Slicing the model into sufficiently thin layers convert the intricate array of components from the 3-D model representation into 2-D model. Currently, there is no CAD system that provides a design tool that sufficiently accommodates the needs of the microlamination process. Instead of creating a brand new CAD system, the solution is to adapt an existing system to become an enhanced design tool for the microlamination. The computerized design system for the MECS environment starts with designing the MECS device in a 3-D CAD solid model. This design information is then extracted and decomposed into features information. Using the features information, the layering process is accomplished by applying the orientation algorithm to determine the best orientation for the device. The slicing algorithm slices the device into layers according to the predetermined orientation. Within the software environment, this design and layering process is completed by implementing geometric modeling principles and utilizing computational algorithm. The system is implemented in the SolidWorks CAD/CAM environment. Example parts and real MECS devices are presented to demonstrate the major step and verify the feasibility of the system developed. The system is capable to orienting and slicing the devices that have all through type features, all nonthrough type features, or a combination of through and non-through type features.
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