The effect of 3D printing parameter variations on tensile strength using filament made of PLA-Titanium

Abstract

Titanium is a biocompatible material. Applications are used in the medical world to make implants and hard tissue replacements. The technique used is usually SLM (selective laser melting). Recently introduced titanium filament for FDM technique feed, but the mechanical properties of 3D printing products with this filament are not yet known. Titanium can be made into 3D printing filaments. This research uses the FDM (fused deposition modelling) method made from PLA (Polylactic Acids) and titanium. This study aimed to determine the tensile strength of 3D printing with this new filament. The research used four 3D printing parameters, with three levels each. The experimental design uses the Taguchi L9 (3^4) method. ANOVA (Analysis of Variance) shows that the contribution of each parameter obtained from the tensile test includes (in order) nozzle temperature, layer height, bed temperature, and infill density of 19.96%; 1.90%; 39.52%; 28.69% consecutively. While the maximum tensile strength was obtained using a combination of nozzle temperature of 225 °C, layer height of 0.2 mm, bed temperature of 40 °C, and infill density of 95%, with an optimal tensile strength value of 15.43 MPa.