Minimizing the surface roughness in L-PBF additive manufacturing process using a combined feedforward plus feedback control system

The poor surface quality during the laser powder bed fusion (L-PBF) process adversely impacts the mechanical properties of the final product and even can result in failure of the process. This study aims at minimizing the top surface roughness of the parts manufactured by the L-PBF process by deploying a feedforward plus feedback control system. The most common factors affecting the surface quality, namely, balling, lack of inter-track overlap, …