Akademik Veri Yönetim Sistemi
ASERC 3rd International Conference On Health, Engineering, Architecture And Mathematics November 14 - 16, 2025 - Istanbul, İstanbul, Türkiye, 14 - 16 Kasım 2025, ss.174-183, (Tam Metin Bildiri)
By modifying the internal infill geometry, additive manufacturing technologies—specifically fused deposition modeling, or FDM—allow the creation of lightweight components with customized mechanical performance. This study systematically examined the impact of various infill topologies on the energy absorption capacity of cylindrical specimens made of FDMprinted polylactic acid (PLA). With the same set of process parameters, such as a fixed infill density of 25%, vertical build orientation, and uniform printing circumstances, five infill patterns—honeycomb, gyroid, triangular, linear, and Hilbert—were chosen and manufactured. In quasi-static compression experiments, cylindrical specimens measuring 12.5 mm by 25 mm were moved 7 mm at a crosshead speed of 1 mm/min. Absorbing energy was calculated using force-displacement data, and specific energy absorption (SEA) was calculated using mass normalization. In order to investigate deformation mechanisms, post-failure macroscopic investigations were also carried out. The results of the experiment showed that the infill geometry had a significant impact on the behavior of energy absorption. The highest absorbed energy (5.44 J) and SEA (2.43 J/g) were obtained by honeycomb specimens, which were ascribed to effective stress redistribution and gradual hexagonal cell collapse. As a result of their topology-dependent deformation, triangular and Hilbert geometries showed intermediate reactions, while the gyroid infill showed stable deformation and progressive failure with modest SEA (1.69 J/g). Because of their confined fracture and premature buckling, linear specimens consistently performed poorly, with the lowest SEA (1.49 J/g).