Abstract
Extrusion Freeform Fabrication (EFF) is an adaptation of the Stratasys Fused Deposition M?deling(FDMTM) .. process.for the· Solid FreeformFabrication (SFF) .of functional ceramic prototypes. It isa c0tnplex process involving many process variables, including parameters that are operation, lllachine,. materials, and geometry specific. A TaguchifactorialDesign of Experiments (DOE)technique.was utilized to study the effects· of machine specific process Pal7arnetersias •welL as . their interactions based on· the mechanical and physical properties of sintered ceramicspeci11lens. Post-processing software was developed to control and modify these parameters. [his software interface was .designed to mimic the QuicksHceTM interface for setting motion parameters based upon the material and the operation. Theresults of this investigation provided/useful information for the experilllentaLanalysis of the machine .specific process parfmeters.Suitable p~ratn~terswereselectedforthe EFF process fori fabricating representative ceralllicpr?totYl?es. \\Tiththe. optimized parameters, complicated parts were successfully fabricatedusil1g.bothKyocera SN282 and Starck M..11 silicon nitride powders.
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