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

3D printing technology continues to advance in the manufacturing industry, especially with the use of flexible filaments such as TPU 95A. This study aims to investigate the effects of layer height and print speed variations on the mechanical properties of 3D-printed TPU 95A specimens. The tested parameters include two layer heights (0.2 mm and 0.25 mm) and three print speeds (70 mm/s, 80 mm/s, and 90 mm/s). Mechanical testing was conducted to evaluate hardness, tensile strength, and elongation. The results show that the combination of 0.2 mm layer height and 70 mm/s print speed produced the highest hardness value of 77 Shore A. Two-way ANOVA analysis revealed that layer height, print speed, and their interaction significantly affect hardness, with print speed contributing the most at 89.06%. The highest tensile strength was recorded at 26.099 MPa with the same parameter combination, while the highest elongation value of 151.12% was achieved using a
0.25 mm layer height and 70 mm/s print speed. This study confirms that selecting appropriate printing parameters greatly influences the mechanical quality of 3D- printed TPU 95A products. Keywords: 3D Printing, TPU 95A, Layer Height, Print Speed, Mechanical Properties.