Paper 13354-18
Paper 13354-18
Real-time spatial frequency modulation imaging for monitoring laser powder bed fusion melt track metrology
29 January 2025 • 9:05 AM - 9:20 AM PST | Moscone South, Room 201 (Level 2)
Abstract
A novel Spatial Frequency Modulation Imaging (SPIFI) optical metrology system is coupled to a laser powder bed fusion (PBF-LB) system for the first time. Significantly, SPIFI records images with a photodiode and produces enhanced resolution. Real-time SPIFI images of melt tracks using 316L steel powder are demonstrated as a function of delay with respect to the fusing beam. Metrics of performance for the SPIFI system in this configuration are presented.
Presenter
Colorado School of Mines (United States)
Scott Hunter is a current PhD candidate in Physics under Jeff Squier at the Colorado School of Mines. His research is centered around developing optical monitoring technologies for additive manufacturing. Before pursuing graduate education at the Colorado School of Mines, Scott was a research assistant at Pacific Northwest National Laboratory working with handheld radiation detectors. On the side, Scott enjoys hiking and backpacking in the Colorado Front Range Mountains.