3 papers
physics.optics2025
Radiometric Temperature Measurement for Metal Additive Manufacturing via Temperature Emissivity Separation
Ryan W. Penny, A. John Hart
Emission of blackbody emission from the meltpool and surrounding area in laser powder bed fusion (LPBF) makes this process visible to a range of optical monitoring instruments inte…
physics.optics2024
High-Fidelity Optical Monitoring of Laser Powder Bed Fusion via Aperture Division Multiplexing
Ryan W. Penny, Zachery Kutschke, A. John Hart
Qualification of high-performance metal components produced by laser powder bed fusion (LPBF) must identify process-induced porous defects that reduce ductility and nucleate fatigu…
physics.app-ph2024
A rapid experimental workflow for studying melt track scaling in laser powder bed fusion using high-precision metal template substrates
Reimar Weissbach, Ryan W. Penny, A. John Hart
Development and qualification of process parameters in laser powder bed fusion (LPBF) commonly involves many variables. At the outset of development, whether transferring known par…