Akademik Veri Yönetim Sistemi
3. INTERNATIONAL SARAJEVO SCIENTIFIC RESEARCHES ANDINNOVATION CONGRESS” 18-19 October, BOSNIA-HERZEGOVINA, Bosanska Krupa, Bosna-Hersek, 18 - 19 Ekim 2025, ss.187-197, (Tam Metin Bildiri)
This study experimentally evaluates the compressive response of Triply Periodic Minimal Surface (TPMS) lattice structures (Gyroid, Neovius, and PMY) fabricated from PLA by Fused Deposition Modeling (FDM). Samples were created in the MS-Lattice model with 5 mm cell size and 0.30 pore density, printed vertically at 220 °C nozzle and 65 °C bed temperatures, and fabricated at 30% nominal relative density. Cylindrical specimens (12 mm diameter × 25 mm height) were tested quasi-statically on the Reagen universal testing machine at a speed of 1 mm/min, with compression limited to a displacement of 4 mm. Experimental results show clear topology-dependent behavior: Gyroid reached the highest peak contact force (~400 N), Neovius reached ~330 N, and PMY reached ~220 N. The force-displacement traces exhibit oscillatory characteristics consistent with gradual, layer-by-layer collapse in Gyroid and more abrupt load drops in Neovius and PMY, suggesting different collapse mechanisms despite the same relative density. The findings indicate that not only relative density but also geometric topology dominantly controls the load-carrying capacity and energy absorption in FDM-fabricated TPMS lattices. These results provide experimental implications for the selection of TPMS geometries for lightweight, energy-absorbing applications.