Real-time spatial frequency modulation imaging for monitoring laser powder bed fusion melt track metrology
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.
Authors
- Daniel Scarbrough (ORCID: https://orcid.org/0000-0002-7542-4532)
- Scott A. Hunter (ORCID: https://orcid.org/0009-0008-8615-0312)
- Seth Cottrell
- Jeff Squier
Institutions
- Colorado School of Mines (US)
Publication Details
- Published
- 2025-03-19
- DOI
- https://doi.org/10.1117/12.3043720
- Primary Topic
- Additive Manufacturing Materials and Processes
- Type
- article
- Field-Weighted Citation Impact
- 0.00