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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
IDK. Okariawan, IDK.
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Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

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Optimasi kekuatan tarik komposit polyester diperkuat serat sisal dengan filler serbuk gergaji kayu sengon menggunakan metode respon surface Okariawan, IDK.; Fajar, M.; Hidayatullah, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 6, No 2 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.917 KB) | DOI: 10.29303/dtm.v6i2.10

Abstract

Composite is an engineering material, which is made from combination of two or more different materials into a new material with new properties. The aim of this research is to investigate optimum composition of sisal fiber reinforced sawdust sengon filled polyester composites on the tensile strength using respon surface methodology.The testing of tensile strength is based on ASTM D 3039 standard. It has dimension 6 mm in thick, 25 mm in width and 340 mm in length. The composites are made by using compaction method. The volume fraction of sisal fiber is 25%, 30% 35%, 40% and 45%. The ratio matrik with filler is varied 5, 10, 15, 20 and 25. The fiber length is 90 mm and the direction of fiber orientation is random.The results shows that the respon surface methodology capable to search value of independent variables to give optimum values of tensile strength. The application of respon surface methodology for the research optimation composition of sisal fiber reinforced sawdust sengon filled polyester composites on the tensile strength showed that the optimum value of tensile strength response could be achieved at volume fraction of sisal fiber 38,6565% and ratio matrik with filler 24,601.
Optimasi Connecting Rod Sepeda Motor Untuk Mereduksi Massa Dan Brake Specific Fuel Consumption (BSFC) Okariawan, IDK.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1258.366 KB)

Abstract

Many countries in the world at recent decade depends energy source from oil (petroleum). Oil is un-renewable energy and someday the quantity will be very low (oil crisis). Some of oil conservation needed to expand oil live, and now for Indonesia, reduce fuel consumption of automobile (particularly for motorcycle) is primary oil conservation effort. Mass reduction of automobile component is one of the way to reduce fuel consumption, from Engineering Design and Manufacture point of view so that these researches try to reduce mass of connecting rod in Motorcycle.       In this research mass reduction, that connecting rod was considering with safety design to material failure, which was quasi-static Factor of Safety (FOS). Increase of fuel efficiency effect calculated from Brake Specific Fuel Consumption (BSFC) criteria. Simulation method was a basis to find FOS and BSFC talked above.       As the result of this research, optimum connecting rod model was obtained, that has lighter mass than initial connecting rod, also enable to stand the allowable minimum FOS (4,6 for tensile load and 2,55 for compressive load). The optimum connecting rod model also enables to reduce BSFC about 6 %.
Co-Authors M. Fajar, M. S. Hidayatullah, S.