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)
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Presentation Title |
Layerwise Modification of Material Chemistry via UV and Reactive Gas Exposure during Fused Filament Fabrication Additive Manufacturing |
Author(s) |
Camden A. Chatham, Donald W Benza, Aaron L Washington, Adrian M Mistreanu, Jonathon N. Baker |
On-Site Speaker (Planned) |
Camden A. Chatham |
Abstract Scope |
Additive manufacturing (AM) technologies are distinguished from traditional molding processes by their layer-by-layer fabrication paradigm. This paradigm enables design flexibility and agility, but also often affects significantly different final part performance properties compared to traditional bulk manufacturing methods. If properly understood, the layer-by-layer process can be leveraged toward novel materials and fabrication methods impossible to achieve through traditional bulk manufacturing. In this presentation, we describe two methods of leveraging the layer-by-layer process to influence final part performance properties of Fused Filament Fabrication AM. Polylactic acid is exposed to UV light and reactive gas in operando to alter the chemical structure and mechanical properties of printed parts. Both light and gaseous reactants have effective depths of penetration. As layer size decreases, the effective depth of penetration represents a larger proportion of total part volume resulting in an increased effectiveness for altering final part properties, especially compared to traditional bulk manufacturing methods. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |