SOLID FREEFORM FABRICATION OF STRUCTURALLY ENGINEERED MULTIFUNCTIONAL DEVICES

摘要

A selective laser sintering method and system are provided for producing a heterogeneous product (10, 11, 12, 13, 14). The method and system comprises generating a computer model (11) of the product and processing the model to obtain numerous cross-sectional representations (13) of the model. The cross-sectional representations are manufactured layer by layer (14) to create the product. Specifically, numerous different powders having a variety of properties are placed within nozzles positioned above a deposition bed using a hopper. Using the computer model as a guide, the different powders are placed at different positions on the deposition bed to form each layer of the device. The deposited powders are consolidated, micromachined, and milled using one or more lasers to create the product. Using this selective laser sintering method, a wide range of heterogenous products may be produced, including bio-implants; small scale energy production, storage and conversion devices; devices that exploit anomalous material behavior; and nanocomposites.