RESEARCH ON OPTIMAL PARAMETERS OF FDM 3D PRINTING TECHNOLOGY TO IMPROVE THE TENSILE STRENGTH OF PETG PLASTIC

Tóm tắt

As 3D printing becomes increasingly prevalent in rapid manufacturing, prototyping, and the production of technical components, optimizing the mechanical performance of printed materials is essential for broadening their practical use. This study aims to improve the tensile strength of PETG, a widely used material in Fused Deposition Modelling (FDM) due to its favorable mechanical properties and ease of processing. Key printing parameters influencing tensile strength were examined and optimized using the Taguchi method. Based on the highest signal-to-noise (S/N) ratio, the optimal FDM settings were identified as a 0.1 mm layer height, 60 mm/s printing speed, 40% infill density, and a 1.2 mm nozzle diameter. Using these optimized conditions, the PETG specimens achieved a tensile strength of 11.62 N/mm². The findings provide both scientific and practical insights that can help improve the quality of PETG 3D-printed parts and guide the selection of suitable printing parameters for applications requiring enhanced mechanical performance.