About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Model Based Control of Fused Powder 3D Printing |
Author(s) |
Sam Stodder |
On-Site Speaker (Planned) |
Sam Stodder |
Abstract Scope |
Powder Bed Fusion 3D printing requires precision control of thermal energy deposited onto polymer powder particles in turn to control polymer phase transition at voxel resolution. With HP’s proprietary Multi Jet Fusion process (MJF), such control is delivered through printer parameters that adjust the printer’s thermal system with the application of radiant energy and print agents. Currently, identifying a set of optimal printer parameters requires users to develop process expertise. Embedding a MJF process Digital Twin in a model-based control system holds the promise to significantly simplify and automate the process optimization procedure. I have developed a thermal simulator of the MJF technology for this purpose. This simulator runs near real-time, solving a vectorized 3D multi-physics model using explicit finite difference method accelerated by GPU massive parallelism. It can be used as a “virtual sensor” outputting voxel level thermal and material phase states that are otherwise infeasible to measure experimentally. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |