About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
|
Poster Session
|
Presentation Title |
Evaluating the Extrudability of Common Feedstocks for Fused Filament Fabrication Systems
|
Author(s) |
Zaky Hussein, Christine Ajinjeru, Chad Duty |
On-Site Speaker (Planned) |
Zaky Hussein |
Abstract Scope |
Previous work established a model for determining the printability of polymer feedstocks in Material Extrusion systems based on the properties of the material and the processing parameters of the system. Failure to meet this criterion represents the actual volumetric flowrate falling below that of the desired volumetric flowrate. The extrudability of polylactic acid and acrylonitrile butadiene styrene was mapped over a range of processing parameters on small-scale Fused Filament Fabrication system. The system printed hollow cylindrical samples one bead thick over a range of deposition temperature and speeds for each material. The actual flowrate was experimentally determined from the print time and printed volume and compared to the specified flowrate. A normalized flowrate was calculated and used to determine if the criterion for pressure-driven extrusion was satisfied. The effects of deposition temperature and speed were characterized for successful pressure-driven extrusion to match the printability model criteria in an FFF system. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |