Experimental investigation of FFF process parameters using carbon fiber reinforced PETG material by Taguchi analysis

Fused filament fabrication (FFF) is a popular additive manufacturing technique with the ability to produce products in industries such as automotive, aerospace, and medical due to the potential for material waste and the manufacturing of complex geometries with different materials. For high-strength parts, it is crucial to investigate and optimize printing parameters to make the printed parts as strong as possible. This work will focus on the experimental investigation of parameter optimization for the strength of carbon fiber reinforced PET-G (PETG+CF), which is carried out using Taguchi's method and the samples were produced according to the orthogonal matrix L16 and to study if influence by ANOVA (analysis of variance). It was possible to conclude that the best parameters for the tensile strength of PETG+CF with temperature of 250° C, part orientation at 60°, layer height of 0.30mm, 100% fill density and with triangle fill pattern.