Abstract:
The advancement of 3D-printing technology has ushered in a new era in the production of
machine components, building materials, prototypes, and so on. In 3D-printing techniques, the infill
reduces the amount of material used, thereby reducing the printing time and sustaining the aesthetics
of the products. Infill patterns play a significant role in the property of the material. In this research,
the mechanical properties of specimens are investigated for gyroid, rhombile, circular, truncated
octahedron, and honeycomb infill structures (hexagonal). Additionally, the tensile properties of PLA
3D-printed objects concerning their infill pattern are demonstrated. The specimens were prepared
with various infill patterns to determine the tensile properties. The fracture of the specimen was
simulated and the maximum yield strengths for different infill structures and infill densities were
determined. The results show the hexagonal pattern of infill holds remarkable mechanical properties
compared with the other infill structures. Through the variation of infill density, the desired tensile
strength of PLA can be obtained based on the applications and the optimal weight of the printed parts.
