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Implementation of Advanced Laser Control Strategies for Powder Bed Fusion Systems

Published

Author(s)

Ho Yeung, Brandon M. Lane, M A. Donmez, Jason C. Fox, Jorge E. Neira

Abstract

Laser path, scan speed, and laser power are critical machine parameters determining the quality of the output of laser-based powder bed fusion (LPBF) processes. A jerk-limited control strategy is implemented for laser path planning on a LPBF additive manufacturing (AM) testbed. The actual and commanded laser paths/velocities are found in a better agreement with each other compared to conventional controls. The new controller enabled implementation of advanced laser power control strategies synchronized with laser position and velocity by embedding all into a modified G-code (referred as AM G-code). An interpreter is developed to utilize sophisticated LPBF laser control commands.
Proceedings Title
Procedia Manufacturing
Volume
26
Conference Dates
June 18-22, 2018
Conference Location
College Station, TX
Conference Title
46th SME North American Manufacturing Research Conference, NAMRC 46

Keywords

Laser Powder Bed Fusion, Additive Manufacturing, Scan Strategies, G-code, Jerk-limited Control
Created June 22, 2018, Updated March 11, 2019