Hao-Ping Yeh

A numerical study on the effect of laser beam shaping on surface roughness and texture in laser powder bed fusion

Spatial laser beam shaping is investigated to assess its influence on surface roughness in laser powder bed fusion (PBF-LB) of 316L stainless steel. A high-fidelity CFD model developed in FLOW-3D simulates Gaussian (GBP) and Ring-spot (RSBP) beam profiles, resolving laser absorpt...