About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
Using Near-net Shape Structures printed by Fused Filament Fabrication to Characterize Tensile Property Anisotropy in Composite Polymers |
| Author(s) |
Ian Andrew Rybak, Miguel Cubillas, Joseph Mckee, Joshua Green |
| On-Site Speaker (Planned) |
Ian Andrew Rybak |
| Abstract Scope |
Extrusion in fused filament fabrication (FFF) processes introduce anisotropy which impacts the ability to measure, model, and predict performance in printed composite parts. As composites are increasingly adopted in FFF and consideration for anisotropic properties are integrated into print planning operations, effective characterization techniques are needed for determining anisotropic properties in FFF-printed materials. To isolate and evaluate polymer composite tensile properties with loads relative to print X-Y axes and build direction without extrusion gaps convoluting the results, high density structures with extrusions parallel to the X axis, much like near-net-shape printing, were printed and machined into individual tensile specimens such that load is applied to a single axis orientation. Polylactic acid composites were printed, characterized, and tested using these methods and were compared to conventionally printed net-shape tensile specimens. This work overcomes persistent challenges in characterizing tensile properties and provides a reference for the mechanical effects resulting from extrusion gaps. |
| Proceedings Inclusion? |
Undecided |