Jesper Henri Hattel

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...

Tailoring cellular automata for physically-based generation of periodic microstructures in powder bed fusion processes

Abstract Accurate representation of periodic microstructures is essential for predicting faster the effective mechanical response of additively manufactured metals through computational homogenization. While geometrically-based microstructure generation approaches can readily enf...