Browsing by Subject "polymer materials"
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Item Mechanical and Dimensional Characteristics of Fused Deposition Modeling Build Styles(1996) Fodran, Eric; Koch, Martin; Menon, UnnyAs rapid prototyping becomes more prominent, industry relies more on the mechanical properties of the builds. Fused Deposition Modeling (FDM) tensile samples were constructed and tested in order to characterize the mechanical properties of Acrylonitrile Butadiene Styrene (ABS) FDM builds. Parameters such as fill gap, line width, and slice thickness were varied in the production of the FDM samples. This was performed independently to isolate the effect of each parameter on mechanical properties. Results include the ultimate tensile strength, yield strength, elongation, energy to fracture, modulus of elasticity, and dimensional analysis. High magnification fracture surface analysis was also be performed to aid in the characterization of sample failures.Item Processing of Piezocomposites via Solid Freeform Fabrication (SFF)(1996) Bandyopadhyay, A.; Panda, R. K.; Janas, V. F.; Danforth, S. C.; Safari, A.Fused Deposition and Sanders prototyping were used to manufacture PZT-polymer composites with various architecture for transducer applications. Two separate processing routes, direct and indirect, were utilized to make these composites. In the direct processing route, Fused Deposition of ceramics (FDC) was used to form green ceramic structures. For the indirect processing route, molds ofthe negative of the structures were made using FDM™ and Sanders prototyping techniques. Molds were infiltrated with a PZT slurry and dried. These structures were subjected to a binder bum out cycle to remove the mold polymer and binder. Structures were sintered and infiltrated with an acoustic epoxy, cut, polished and poled for electro-mechanical characterization. Among the various composites produced via the direct and indirect processes were: 3D honeycomb, 3-3 ladder, 2-2 annular and 1-3 rods. Composites with features as fine as 50 f.lm were manufactured and characterized. Properties ofpiezoelectric composites produced by SFF techniques compared to conventionally processed composites.