Influence of Spattering on In-process Layer Surface Roughness during Laser Powder Bed Fusion

no code implementations • 1 Mar 2023 • Haolin Zhang, Chaitanya Krishna Prasad Vallabh, Xiayun Zhao

In this work, using our lab-designed LPBF-specific fringe projection profilometry and an off-axis camera, we quantify the correlation between MP spattering and in-process layer surface roughness for the first time to reveal the influence of MP spatters on process anomaly and part defects.

Single-camera Two-Wavelength Imaging Pyrometry for Melt Pool Temperature Measurement and Monitoring in Laser Powder Bed Fusion based Additive Manufacturing

no code implementations • 14 Sep 2021 • Chaitanya Krishna Prasad Vallabh, Xiayun Zhao

Melt pool (MP) temperature is one of the determining factors and key signatures for the properties of printed components during metal additive manufacturing (AM).