| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Enhancing Stability and Quality in Laser-wire Directed Energy Deposition Through Dual-control Algorithms |
| Author(s) |
Hyub Lee, Seong Hun Ji, Jongcheon Yoon, Durim Eo, Dongseok Kang, Simo Yeon, Yong Son |
| On-Site Speaker (Planned) |
Hyub Lee |
| Abstract Scope |
The Laser-wire Directed Energy Deposition (LW-DED) process is increasingly favored for its cost efficiency compared to the powder-blown DED method. However, LW-DED requires relatively complex control due to the continuity of the feed material. In powder-blown DED, suboptimal heat input might cause defects like lack of fusion or keyhole porosity, but these usually don't halt the process. In contrast, inappropriate parameters in LW-DED can cause stubbing, where un-melted wire bends under load, or dripping from excessive melting, both of which critically affect bead quality and can terminate the process. This presentation introduces a control algorithm for LW-DED process designed to simultaneously adjust laser power and wire feed rates. This dual-control strategy ensures a consistent melt pool size and continuous, stable bead formation, which prevents the process failure effectively. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |