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 |
Developing a Comprehensive Printability Window for Reliable Molten Metal Droplet-on-Demand Manufacturing |
Author(s) |
Nicholas Watkins, Viktor Sukhotskiy, Phillip Paul, Jason Jeffries, Andrew Pascall |
On-Site Speaker (Planned) |
Nicholas Watkins |
Abstract Scope |
Molten metal droplet-on-demand additive manufacturing is a promising alternative to laser-based methods as it is compatible with a large range of powder-free feedstock materials and provides a faster turn-around with minimal waste. However, this relatively new technique needs further investigation to fully understand jetting dynamics in the Weber jet and Ohnesorge parameter space that is well beyond that of traditional ink jetting (Oh > 10-1). We have previously used molten metals to discover that satellite-free droplets can be formed at previously unexpected Oh (10-3 to 10-4). We now focus on the unexplored intermediate region (Oh from 10-2 to 10-3), where experiments and simulations reveal that additional jetting parameters such as printer actuation and fluid pinch-off timescales may be needed to describe the printability space more fully. These additional parameters may provide a more comprehensive tool to inform any droplet-on-demand process with any material.
Prepared by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-862829. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |