| 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)
|
| Presentation Title |
Uncovering Fundamental Process Deficiencies in Wire-laser Directed Energy Deposition using In-situ High Speed Imaging |
| Author(s) |
Jakob D. Hamilton, Anis Assad, Benjamin Bevans, A. R. Cardinali, Prahalada Rao, Denis Cormier, Iris V. Rivero |
| On-Site Speaker (Planned) |
Jakob D. Hamilton |
| Abstract Scope |
Wire-based directed energy deposition (DED) offers key advantages over their powder counterparts but retains several major hurdles in becoming a push-button additive manufacturing technology. While powder DED provides high resolution, localized metallic deposition capabilities, it has yet to widely penetrate industrial manufacturing environments for several reasons. Powder safety, reactivity with oxygen, and low recyclability provide onerous economic and environmental barriers. Compared to atomized powder, wire requires considerably fewer safety precautions and resources during feedstock production and use. When implemented in laser DED, wire circumvents these limitations and shows promise for high-resolution, high-throughput manufacturing. This work outlines state-of-the-art limitations for wire-laser DED. Process deficiencies are captured using high-speed in-situ optical imaging and classified into several categories: incomplete melting, balling, stubbing, and stable deposition. Auxiliary deficiencies including substrate material and shielding gas coverage are also explained along with remediation strategies. Future strategies are suggested for transitioning nascent wire-laser DED into mainstream manufacturing. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |