PENGARUH PRINT SPEED DAN LAYER HEIGHT TERHADAP SIFAT MEKANIK PADA SPESIMEN 3D PRINTING FILAMENT TPU-95A

The development of Industry 4.0 technology in the manufacturing sector has led to the creation of high-quality and innovative products, particularly in 3D printing technology. This study aims to investigate the effect of varying print speed and layer height parameters on the mechanical properties of 3D printed products using TPU-95A filament. Print speed and layer height are key parameters in the Fused Deposition Modeling (FDM) process that influence the characteristics of the final product, especially in terms of hardness, tensile strength, and elongation. In this research, print speeds of 70 mm/s, 80 mm/s, and 90 mm/s, as well as layer heights of 0.15 mm and 0.2 mm, were used. Hardness testing was conducted according to the ASTM D2240 standard, while tensile testing followed the JIS K6251:2017 standard. The results showed that the combination of a 70 mm/s print speed and a 0.15 mm layer height produced the highest hardness value of 78,4 Shore A and the maximum tensile strength of 27.003 MPa. The highest elongation value of 145,5% was obtained from the combination of an 80 mm/s print speed and a 0.2 mm layer height. Statistical analysis using Two-Way ANOVA indicated that both print speed and layer height significantly affected hardness values (p < 0.05). Based on this study, it can be concluded that proper adjustment of printing parameters plays a crucial role in enhancing the mechanical quality of 3D-printed products made from TPU-95A.
Keywords: 3D Printing, TPU-95A, Print Speed, Layer Height, Hardness, Tensile Strength, Elongation.