Pengaruh Jumlah dan Kecepatan Mata Pisau terhadap Performa Mesin Chopper Multifungsi

Abstract

This study aimed to investigate the effects of the number of blades and blade rotational speed on the chopping performance of a multifunction chopper machine using the Design of Experiments (DOE) approach with a full factorial design. Two experimental factors were evaluated: the number of blades (4 and 5 blades) and rotational speed (700, 900, 1100, and 1300 rpm). Experimental data were analyzed using two-way Analysis of Variance (ANOVA), Pareto Chart, Main Effects Plot, and Interaction Plot in Minitab software. The results indicated that both the number of blades and rotational speed significantly affected the chopping performance, with rotational speed identified as the most influential factor. In contrast, the interaction between the number of blades and rotational speed was not statistically significant, indicating that each factor influenced the response independently. The highest average chopping performance was achieved using five blades at a rotational speed of 1300 rpm. These findings demonstrate that optimizing the primary operating parameters, particularly rotational speed, can effectively improve the performance of the chopper machine. Furthermore, the application of DOE proved to be an effective method for identifying significant factors and determining optimal operating conditions for agricultural chopping equipment