Offline laser power modulation in LPBF additive manufacturing including kinematic and technological constraints

Purpose In Laser Power Bed Fusion (LPBF), the process and operating parameters influence mechanical geometrical characteristics of manufactured parts. Therefore, optimization control these are mandatory to improve quality produced During manufacturing, usually constant whatever part size or built layer. With such settings, manufacturing may lead an inhomogeneous thermal behavior locally overheating areas, impacting quality. The aim this study is take advantage analytical model modulate laser power upstream manufacturing. Design/methodology/approach approach takes place in two steps: first step consists calculating preheating temperature at considered point second one determines modulation reach desired point. Findings Numerical investigations on several use cases show effectiveness method overheated areas homogenize simulated distribution. Originality/value specificity lies its ability directly calculate amount energy be supplied without any iterative calculation. Furthermore, as close possible technology used LPBF machines, kinematic scanning head response time also integrated into