About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Use of a Penetrating Deposition Nozzle for Z-Pinning Additive Manufacturing |
Author(s) |
Brenin Charles Bales, Roo Walker, Vlastimil Kunc, Chad Duty |
On-Site Speaker (Planned) |
Brenin Charles Bales |
Abstract Scope |
Fused Filament Fabrication involves depositing material layer-by-layer to create a three-dimensional object. This method often demonstrates high mechanical anisotropy in the printed structure, leading to a drop in the material strength of the part when comparing structures along the deposition path (X/Y-Axis) versus build direction (Z-Axis). Initial research has led to the development of the Z-Pinning process, where continuous pins are deposited in the Z-Axis. This process has led to significant gains in toughness and inter-layer strength, particularly in fiber-reinforced materials. However, this process can create flaws in the structure that increase in severity and frequency as the pins grow in length and diameter. To mitigate the flaws, a penetrating nozzle has been developed that extends a fine-tipped extrusion nozzle into the pin cavity and simultaneously extrudes material as it retracts. This study will investigate the printability of the penetrating nozzle for simple geometries and evaluates the resulting Z-pinning mesostructure. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |