Optimizing additive manufacturing parameters for graphene-reinforced PETG impeller production: A fuzzy AHP-TOPSIS approach

Additive manufacturing, particularly 3D printing, has transformed production by enabling precise, layer-by-layer construction with minimal material waste. This study aims to optimize the mechanical properties and production efficiency of impellers manufactured using Graphene-Reinforced Polyethylene Terephthalate Glycol (G-PETG) filament. By employing the Fuzzy Analytic Hierarchy Process (FAHP) and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), we identified optimal 3D printing parameters. The results showed that a 65 % infill density, 0.20 mm layer height, 50 mm/s printing speed, 90 °C platform temperature, 240 °C extruder temperature, and 90 mm/s traverse speed led to a 15 % improvement in tensile strength and a 12 % reduction in production time compared to baseline settings. Additionally, the impellers produced demonstrated superior surface finish and structural integrity, making them suitable for high-performance applications. These findings underscore the importance of parameter optimization in enhancing the performance of 3D-printed components, particularly for applications requiring high mechanical strength and precision. • Revolutionizing Production with 3D Printing : Additive manufacturing, particularly 3D printing, minimizes waste with layer-by-layer construction. • Optimal Parameter Selection : The study identifies ideal process parameters for G-PETG impeller production, enhancing mechanical properties. • Methodology : Fuzzy AHP and TOPSIS are used to systematically determine optimal parameters in 3D printing extrusion processes. • Optimized Parameters : Key settings include 65% infill, 0.20 mm layer height, 50 mm/s print speed, 240°C extruder, and 90°C platform. • Impact on Performance: Optimized settings improve the strength and precision of 3D printed components, crucial for additive manufacturing.