Akademik Veri Yönetim Sistemi
17th INTERNATIONAL CONFERENCE ON ENGINEERING & NATURAL SCIENCES, Praha, Çek Cumhuriyeti, 3 - 07 Mayıs 2025, cilt.1, sa.1, ss.308-317, (Tam Metin Bildiri)
Additive manufacturing technologies are a rapidly developing and increasingly widespread production approach based on the principle of building up material layer by layer to form a final product, offering an alternative to traditional manufacturing methods. Due to its advantages such as low-cost production capability, design flexibility, and the ease of manufacturing complex geometries, it has become increasingly prevalent in industrial applications. Fused Deposition Modeling (FDM), one of the rapid prototyping techniques, is among the most widely used additive manufacturing methods. The FDM method operates based on the principle of extruding thermoplastic filaments layer by layer. The mechanical performance of the parts produced using this method is directly influenced by printing parameters such as nozzle diameter, layer thickness, and infill density. In this study, the effects of three different nozzle diameters (0.2, 0.4, 0.6 mm), layer thicknesses (0.05, 0.1, 0.2 mm), and infill densities (60%, 80%, 100%) on the mechanical strength of PLA specimens produced using the FDM method were investigated. All specimens were produced at a constant printing temperature of 220 °C, and tensile tests were performed for each parameter combination to evaluate the maximum load (N) and tensile strength (N/mm²). As a result of the tests, it was determined that the specimens printed with a 0.6 mm nozzle diameter exhibited higher mechanical strength. In general, mechanical strength increased with larger nozzle diameters and lower layer thicknesses, while higher infill densities had a consistently positive effect across all combinations. The lowest maximum load value was calculated as 45.67 N, which was observed in the specimen printed with a 0.4 mm nozzle diameter, 60% infill density, and 0.1 mm layer thickness. A maximum load value of 82.33 N was obtained from the specimen printed with a 0.6 mm nozzle, 100% infill, and 0.1 mm layer thickness, indicating an approximate 80% increase. In terms of tensile strength, an improvement of around 57% was recorded between the minimum and maximum values. These findings highlight the significant influence of printing parameters on the mechanical performance of FDM-printed parts.