| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Presentation Title |
Advancing the Process Window for Reliable Metal Droplet-on-demand Manufacturing |
| Author(s) |
Nicholas Watkins, Phillip H. Paul, Viktor Sukhotskiy, Jason R. Jeffries, Andrew J. Pascall |
| On-Site Speaker (Planned) |
Nicholas Watkins |
| Abstract Scope |
Liquid metal droplet-on-demand additive manufacturing is an attractive alternative to the industry-standard, laser-based techniques: powder-free, low feedstock footprint, minimal material waste, less contamination and inclusions from feedstock, and compatible with a large range of materials. Despite substantial ink jetting research in the past, little effort has been made to understand the parameter space to reliably eject stable, satellite-free liquid metal droplets. We previously empirically mapped the extreme region of a droplet-on-demand printability window based on the Ohnesorge and Weber jet numbers, showing that satellite-free ejections are possible for any molten metal. We continue to map an unexplored intermediate region of this window using our custom printer, finding that additional parameters to the Ohnesorge and Weber jet numbers may be needed to fully describe the printability space. This added dimensionality may permit the printability window to inform essentially any droplet-on-demand process using any feedstock. Prepared by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-846903 |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |