Field-Based Toolpath Generation for 3D Printing Continuous Fibre Reinforced Thermoplastic Composites

We present a field-based method of toolpath generation for 3D printing continuous fibre reinforced thermoplastic composites. Our employs the strong anisotropic material property fibres by generating toolpaths along directions tensile stresses in critical regions. Moreover, density distribution is controlled an adaptive way proportionally to values stresses. Specifically, vector field generated from stress tensors under given loads and processed have better compatibility between neighboring vectors. An optimal scalar computed later making its gradients approximate field. After that, isocurves are extracted generate reinforcement, which also integrated with boundary conformal user selected The performance our has been verified on variety models different loading conditions. Experimental tests conducted specimens carbon (CCF) polylactic acid (PLA) matrix. Compared reinforcement load-independent toolpaths, fabricated show up 71.4% improvement mechanical strength physical when using same (or even slightly smaller) amount fibres.