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About this Abstract
Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Vision-Based Monitoring and Feedback Control for Laser-Wire Directed Energy Deposition
Author(s) Braden McLain, Frank Liou
On-Site Speaker (Planned) Braden McLain
Abstract Scope Ideal process parameters in Laser Wire Directed Energy Deposition (LWDED) have a strong temporal and spatial dependence. Because of this, static process parameters over time will result in parts with non uniform geometry and non uniform thermal history. To account for this, it is important to implement process monitoring and control strategies. This study explores the use of visible light CMOS cameras for sensing and control in LWDED processes. Machine vision tools are developed to quantify process stability, measure deposition stickout height, and assess hotzone thermal state. Feedback control strategies are implemented for both wire stickout and meltpool area. By consolidating multiple sensing functions into a single low-cost camera system, this work aims to reduce the barrier to accessible, closed-loop control of LWDED processes.
Proceedings Inclusion? Planned: Post-meeting proceedings

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