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 |
Characterizing Internal Porosity of 3D-printed Fiber Reinforced Materials |
Author(s) |
Frye Mattingly, Alan Franc, Vlastamil Kunc, Chad Duty |
On-Site Speaker (Planned) |
Frye Mattingly |
Abstract Scope |
As the functional requirements for 3D printed parts become more demanding, the use of fiber reinforced materials in material extrusion printers is increasingly common. Although fiber-reinforced thermoplastics offer higher stiffness and strength, their internal volume often has a high degree of porosity which can negatively impact mechanical properties. This research surveys internal porosity across several material extrusion additive manufacturing platforms, primarily single screw extruder systems such as the Big Area Additive Manufacturing (BAAM) system. The porosity within the volume of an extruded bead was quantified through image analysis of cross sectional micrographs. The impact of processing parameters such as volumetric flow rate, temperature, and nozzle diameter were evaluated, as well as multiple hardware configurations and material conditions. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |