About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Effects of Fiber Length Evolution in Carbon Fiber-reinforced Epoxy Composites for Direct Ink Writing |
Author(s) |
Nadim S. Hmeidat, Daniel S. Elkins, Hutchison R. Peter, Vipin Kumar, Brett G. Compton |
On-Site Speaker (Planned) |
Nadim S. Hmeidat |
Abstract Scope |
Fiber-reinforced polymer composites have been extensively utilized as feedstock materials for material extrusion additive manufacturing (AM) to improve the strength, stiffness, and functionality of printed parts. However, sparse attention has been devoted to investigating the effects of feedstock formulation and processing parameters on the evolution of fiber length distribution (FLD) and mechanical properties of the 3D-printed composites. This talk focuses on the use of short carbon fiber-reinforced epoxy composites as ink feedstocks for direct ink writing (DIW) to investigate the evolution of FLD during ink processing. Relationships between fiber content, mixing time, FLD, ink rheology and printing behavior, and mechanical properties of the resulting printed composites will be highlighted. Furthermore, the effects of print parameters—print speed and nozzle size—on the mechanical anisotropy and fiber orientation distribution (FOD) in the printed composites will be discussed. Implications for the development of better fiber-filled inks for AM will also be discussed. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |