Influence of filler and FDM printing parameters on PLA tensile strength

Abstract

Influence of the filler (alumina, copper, carbon fiber) and FDM printing parameters on PLA tensile strength was investigated. FDM process parameters (raster angle, layer thickness, number of coatings) were optimized using the ANOVA test. It was found that the most important parameter is the raster angle. Tensile strength increases as the raster angle increases and the number of shells as well as layer thickness (larger number of infills) decreases. The highest strength was achieved for PLA/PLA-Al2O3