| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing:
Incorporating Breakthrough Functionalities for Building Large Scale Components
|
| Presentation Title |
Overcoming the resolution-deposition limit of additive manufacturing with droplet-on-demand molten metal jetting |
| Author(s) |
Viktor Sukhotskiy, Andrew Pascall, Jason Jeffries |
| On-Site Speaker (Planned) |
Viktor Sukhotskiy |
| Abstract Scope |
Like most additive manufacturing (AM) methods, droplet-based molten metal jetting (MMJ) techniques suffer from a fundamental trade-off between resolution and speed. This trade-off naturally manifests limits to the fabrication of parts. We will present some of these limits and propose a novel method to circumvent them: multi-resolution metal AM via magnetohydrodynamic (MHD) droplet-on-demand MMJ. Multi-resolution MMJ enables high resolution and high deposition by selectively ejecting metal droplets of varying size from a single nozzle with two orifices. Smaller orifices enable fine resolution features at the expense of deposition rate. Conversely, larger orifices allow rapid printing of coarser features. By tailoring MHD pulses to the characteristic fluid dynamics of each orifice, we can select the ejecting orifice at will. We establish the concept using 3D fluid dynamics simulations of a nozzle with 200 and 500µm diameter orifices and validate experimentally using an aluminum alloy.
Prepared by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-863319 |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Process Technology |