About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Increasing Part Strength and Density in Binder Jetting with Lattice Infill Patterning |
Author(s) |
Amanda Wei, Kazi Moshuir Raman, Christopher Williams |
On-Site Speaker (Planned) |
Amanda Wei |
Abstract Scope |
Traditionally, binder jetting homogeneously deposits binder throughout the entire part cross-section to provide green part strength. However, recent research suggests that the deposited binder inhibits densification and final part density can be significantly improved by reducing the volume of binder in the green part. Thus, to balance the tradeoff between green part strength and final part properties, a binder patterning strategy comprised of a contour shell with various internal lattice or TPMS infill patterns is explored for 316L stainless steel. The results suggest that, while a solid binder infill provides the greatest green part strength, it results in a reduction of sintered part properties relative to the shell and infill patterns. In particular, an octet infill was found to have 14% of the green part strength of a traditional solid infill, but a 9% higher relative density and 36% higher flexural strength once in the sintered state. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |