Printing angles of polylactic acid and carbon particles/polylactic acid composite and their effect on impact strength of 3D printers

This work is focusing on fused deposition modelling (FDM) 3D printing; this process principle is making the sample by adding melted materials for each layer. Therefore, this process has several advantages that can solve many manufacturing problems by the control of remodelling the output sample by setting the printing parameters such as printing temperature, speed, infill percentage and layer height. Finding the suitable setting parameters for the output sample can be a great challenge for the user, which can affect the mechanical characteristics of the produced printed sample. This paper examines the impacts of the printing angles and orientation on the mechanical characteristics of the acid of polylactic (PLA) and the particles of carbon in the output sample. To calculate this influence, a 3D printed sample for tensile strength and charpy was made at 0○, -45○, /+45º, 60° and 90º. The orientation was different but, the other of the factors hold constant such as infill density and layer height. Four different results were analysed for the impact resistance of these tests. The maximum impact resistance, 23.3 kJ, was obtained with 100% infill density and 0.1 mm layer height at 45º orientation. Results showed that printing angles (0°,-45/+45º, 60°) with 100% infill density is recommended. Furthermore, by making the comparison between the analysis finding with the finding of other studies, the printer parameters and materials were found to impact the mechanical characteristics of PLA sections significantly.