PENGARUH METODE PROSES MANUFAKTUR TERHADAP KEKUATAN BENDING KOMPOSIT SERAT KULIT POHON WARU SEBAGAI MATERIAL TERBARUKAN UNTUK PESAWAT NIRAWAK

Abstract

The current development of composite technology leads to Nature Composites (NACO). One of the natural composites that is currently being developed and researched is the hibiscus skin fiber composite. The material combination of hibiscus bark fiber and synthetic resin has quite good potential in terms of the resulting tensile strength and impact strength. From several research results, this hibiscus bark fiber composite has good potential in terms of mechanical properties, so that it can be implemented as a material for drones with specifications: light, stiff, not easily broken, tough and resistant to vibration and corrosion. The specifications for unmanned aircraft which must have tough properties in terms of mechanical properties, it is necessary to increase the mechanical properties of waru tree bark fiber composites. In improving the mechanical properties of the waru tree bark fiber composite, it is not only the reinforcing material phase and the matrix phase material that are taken into account. The manufacturing process of the waru tree bark fiber composite also needs to be designed and analyzed, so that it will be able to produce a good and strong composite material structure. The problem to be investigated is the effect of the manufacturing process method on the mechanical properties of hibiscus bark fiber composites as a renewable material for drones. The independent variables in this study include: the hand lay up method, the vacuum infusion resin method, and the press method. The dependent variables in this study include Bending strength, composite fracture analysis, and reinforcement matrix bond analysis (microphoto). The results of this study can be concluded that the manufacturing process method affects the bending strength of waru tree bark fiber composites. This can be seen from the test results, where the highest bending strength is found in the Vacuum Infusion manufacturing process with an average bending strength value of 21.97 Mpa, and the lowest bending strength is found in specimens with a Press manufacturing process with an average bending strength value of 18.08 MPa.