A comparative study on the effect of infill density, shape structure, and materials on tensile properties of FDM printed components

Abstract

The Fused Deposition Modeling (FDM) 3D-printing method makes it possible to create high-complexity geometries quickly. The strength of the FDM printed components depends on various process factors, such as the infill density, the infill shape structure, the material, and a great number of other variables. This work evaluates the effect of infill structure and infill density on the tensile strength of different materials. PLA, ABS, and PETG materials were considered during the work with different infill densities and structures. It compares the deformation behavior of different materials with the same infill structures and density. The experimental results show that the tensile deformation of material depends on the infill structure and density. For PLA and ABS, triangular infill structures show higher tensile strength at each infill density, whereas for ASA tri-hexagonal structure shows higher strength. This work helps the researchers and academician to enhance their knowledge in the field of FDM process.