PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN BENDING DAN IMPAK KOMPOSIT UNIDIRECTIONAL BERPENGUAT SERAT RAMI DAN SERAT AKAR WANGI DENGAN MATRIKS POLYESTER UNTUK KANDIDAT WING UNMANNED AERIAL VEHICLE

Nugroho, Heru (2023) PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN BENDING DAN IMPAK KOMPOSIT UNIDIRECTIONAL BERPENGUAT SERAT RAMI DAN SERAT AKAR WANGI DENGAN MATRIKS POLYESTER UNTUK KANDIDAT WING UNMANNED AERIAL VEHICLE. Thesis thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Composites are materials consisting of two or more different types of materials, namely reinforcement and matrix. Ramie fiber and vetiver fiber are potential reinforcing materials to be used as reinforcement in composites because they have good properties such as high strength, light weight, and environmental friendliness. Meanwhile, the polyester matrix was chosen because it has low production costs, is easy to obtain, and can be applied to various industries, especially in the UAV industry. The purpose of this study was to find out how changes in the volume fraction in a mixture of ramie fiber and vetiver fiber affect the impact and bending strength of materials using a polyester matrix. The method used is Hand Lay-Up, where hemp fiber and vetiver fiber were mixed with a polyester matrix in different volume fraction variations. The volume fractions included 10% flax:5% vetiver fiber, 15% flax:5% vetiver fiber and 20% flax:5% vetiver fiber. The results showed that the effect of 5% vetiver fiber and an increase in the percentage of hemp fiber increased the impact strength of the composite. The highest impact strength occured in the volume fraction composite of 20% hemp fiber and 5% vetiver fiber with an impact strength of 0.11456 J/mm2. The effect of 5% vetiver fiber and increasing the percentage of hemp fiber also increased the bending strength of the composite. The highest bending strength occurred in the volume fraction composite of 20% hemp fiber and 5% vetiver fiber with a bending strength of 25.009 N/mm2.

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