About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
|
Materials
|
Presentation Title |
Evaluating the Effect of Z-pinning parameters on the Mechanical Strength and Toughness of Printed Polymer Composite Structures
|
Author(s) |
Brenin Charles Bales, Tyler Smith, Seokpum Kim, Vlastimil Kunc, Chad Duty |
On-Site Speaker (Planned) |
Brenin Charles Bales |
Abstract Scope |
Traditional Fused Filament Fabrication methods create a mechanically anisotropic structure that is stronger in the deposition plane than across successive layers. A recently developed Z-Pinning process deposits continuous pins in the structure that are orientated in the build direction across multiple layers. Initial studies of this technique have demonstrated the ability to increase inter-layer strength and toughness. The current study evaluated various z-pinning parameters for carbon fiber reinforced polylactic acid (CF-PLA) structures, including infill percentage, pin length, and deposition pattern. Each of these was found to affect the ability of the z-pin to mechanically bond with the existing lattice structure and had a resulting impact on the mechanical strength and toughness. Relationships between mechanical performance and various print parameters will be presented, with the intent of identifying a printed structure and process parameters that can achieve a mechanically isotropic data set. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |