Studi Pengaruh Komposisi Dan Susunan Serat Terhadap Nilai Uji Impak Pada Material Komposisi Batang Pohon Pisang Kepok Dengan Matrik Polimer
Keywords:
composite, banana stem fiber, impact test, fiber arrangementAbstract
Indonesia is an agrarian country with a tropical climate and abundant natural resources, particularly in West Kalimantan. One of these natural resources is the banana plant, which is highly available in nature. This study aims to determine the maximum impact strength and the effect of varying fiber arrangements of banana stems on the impact test results of polyester matrix composite materials. Banana stem fibers are used as natural reinforcement due to their eco-friendly characteristics and ease of availability. The testing was conducted using the Charpy impact test method based on the ASTM D 6110 standard, with specimen dimensions of 125 mm × 12.7 mm × 12.7 mm and a notch depth of 2.5 mm at a 45 ° angle. Six variations of composite samples (A"“F) were tested, each with different fiber compositions and orientations. The test results showed that the highest absorbed energy, 39.6914 Joules, was obtained by specimen A, with an average impact strength (HI) of 0.237163 J/mm ². In contrast, the lowest HI value was recorded in specimen B, at 0.152402 J/mm ². The differences in fiber orientation and composition significantly affected the material's ability to absorb impact energy. A straight fiber arrangement with a balanced resin-to-fiber ratio (50%:50%) proved to offer the best impact toughness compared to other variations. Fiber orientation and resin"“fiber composition are key factors in determining the mechanical performance of banana fiber composites, offering promising potential for utilizing agricultural waste as an eco-friendly composite reinforcement material.References
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