Pengaruh Parameter Vacuum Assisted Resin Infusion terhadap Kekuatan Tarik Polyester Komposit dan Serat Sabut Kelapa

Abstract

Composite materials are combinations of two or more materials that result in enhanced properties. Coconut fiber has become a potential material for composites. Its use can help reduce waste that cannot be utilized. Various composite fabrication methods have been developed, one of which is vacuum infusion. Vacuum infusion offers the advantage of even resin distribution. This method is efficient in resin usage and time management. This study aims to analyze which parameters affect the composite manufacturing process in terms of tensile strength. In data processing, the Taguchi method is used to determine the contribution of each parameter. Taguchi L9 (3 4 ) is used to design the experiments, followed by S/N ratio and ANOVA analysis. Based on the experimental results and analysis, it was found that the significant parameters are fiber orientation and catalyst variation, while vacuum pressure and fiber volume fraction have no significant effect on tensile strength. The contributions of each parameter are 83.24% (fiber orientation), 7.33% (catalyst variation), 1.41% (fiber volume fraction), and 0.74% (vacuum pressure). The optimal combination of parameters, determined based on the S/N ratio calculation, is a vacuum pressure of 0.2 bar, fiber volume fraction of 10%, fiber orientation of 0°, and catalyst of 0.5%. This study provides insight into which parameters affect the tensile strength of composites using the vacuum-assisted resin infusion method