Akademik Veri Yönetim Sistemi
7. Bilsel International Gordion Science Researches Congress, Ankara, Türkiye, 25 - 26 Ekim 2025, ss.70-77, (Tam Metin Bildiri)
This study examines the influence of layer thickness and build orientation on the tensile performance of Fused Deposition Modeling (FDM) printed polymer materials. Five commercial filaments including ABS, ASA, PETG, Tough PLA, and Hyper PLA were printed at two layer thicknesses of 100 µm and 200 µm in the horizontal orientation. An additional Tough PLA specimen was printed vertically to evaluate the effect of build direction. The results show that layer thickness has a significant impact on mechanical behavior. In general, specimens printed with 100 µm layers exhibited higher ultimate tensile strength (UTS) than those printed with 200 µm layers, indicating stronger interlayer bonding and improved filament fusion. The highest tensile strength was achieved by the 100 µm Tough PLA specimen (52.8 MPa), followed by Hyper PLA and PETG, while ABS had the lowest value (34.7 MPa). Interestingly, ABS showed a reverse trend where the 200 µm sample had slightly higher strength due to better interlayer fusion and reduced residual stress. The vertically printed Tough PLA sample demonstrated a pronounced strength reduction (18.3 MPa), confirming the detrimental effect of loading perpendicular to the layer interfaces. Fracture surface analysis supported these observations, revealing more compact and interlocked morphologies for thin-layer specimens.