About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Presentation Title |
Precision Density Control in Binder Jetted Composites via Selective Vacuum Infiltration |
| Author(s) |
Max Gunn, Owen Josephson, Talmage Madsen, Nathan Crane |
| On-Site Speaker (Planned) |
Max Gunn |
| Abstract Scope |
Binder jetting can produce high density single component parts, but it is not currently possible to design a process to hit a specific target density. Achieving targeted density is important for creating parts to simulate other materials for testing purposes. This talk presents a method for creating parts with precise density targets and moment of inertia by producing porous powder scaffolds and subsequently densifying them via selective vacuum infiltration. By precisely dosing an infiltrant into the green body, target densities are achieved without altering external geometry, overcoming the mass distribution limitations of traditional manufacturing. Preliminary results using a mullite-epoxy system demonstrated exceptional accuracy, achieving a mean density error of less than 0.7% in 10 mm cubes. The study investigates infiltration scalability and the development of gravity-induced density gradients in larger components. |
| Proceedings Inclusion? |
Undecided |