OPTIMASI PENGARUH FRAKSI VOLUME FLY ASH ALUMUNIUM ZINC STEARATE TERHADAP DENSITAS POROSITAS DAN KEKERASAN DENGAN METODE TAGUCHI

TIAR, ARIL KUSTONO and Hadi, Qomarul (2024) OPTIMASI PENGARUH FRAKSI VOLUME FLY ASH ALUMUNIUM ZINC STEARATE TERHADAP DENSITAS POROSITAS DAN KEKERASAN DENGAN METODE TAGUCHI. Undergraduate thesis, Sriwijaya University.

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Abstract

As time goes by and technology, composite materials are really needed, especially in industrial fields such as airplanes, shipping, in the military world, sports equipment, automotive and medicine and even household appliances. Composite materials are chosen in this field because they have excellent corrosion resistance properties, the characteristics of the composite can be controlled and the production costs are cheaper and lighter. In this case, the composite used is fly ash as reinforcement and aluminum as matrix. Composites are the creation of a new type of material from the result of mixing two or more constituent materials that are different, both in terms of physical and chemical properties. In this study, a powder composition with three variables was used: Fly ash (20%), Aluminum (75%), Zinc Stearate (5%), Fly ash (25%), Aluminum (70%), Zinc Stearate (5%) and Fly ash (30%), Aluminum (65%), Zinc Stearate (5%). Then the material is subjected to a powder metallurgy process to become a composite. The manufacturing steps are the same as for powder metallurgy in general, however in this research various sintering temperatures of 250˚C, 275˚C and 300˚C were used as well as sintering holding times of 15 minutes, 20 minutes and 25 minutes. After the composite has been made, density, porosity, hardness and scanning electron microscopy are tested to determine the shape of the powder, the surface of the composite and the diffusion of the powder particles in the composite. The best composition in this study was aluminum (75%), fly ash (20%) and zinc stearate (5%). Density test results show that the value of the density and hardness of the composite increases as the sintering temperature increases and actually decreases when the sintering time is increased. The best average density value at a variable temperature of 250 ℃ with a sintering time of 25 minutes was 88.9379 and the lowest average density value at a variable temperature of 275 ℃ with a sintering holding time of 25 minutes was 81.9383. The best hardness value at a variable temperature of 275 ℃ with a sintering time of 20 minutes is 68.6 VHN, and the lowest compressive strength value at a variable temperature of 250 ℃ with a sintering time of 25 minutes is 34.9 VHN, this proves that the best variable for manufacturing the composite is at a temperature of 250 ℃ with a sintering holding time of 25 minutes. Meanwhile, the factor variable that has the most influence on the density, porosity and hardness test results is volume fraction. Keywords: Composite, Temperature, Density, Porosity, Hardness.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Komposit, Temperatur, Densitas, Porositas, Kekerasan.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials > TA455.C43.A395 Materials science. Mechanical engineering. Ceramic metals
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Aril Kustono Tiar
Date Deposited:	11 Dec 2024 07:04
Last Modified:	11 Dec 2024 07:04
URI:	http://repository.unsri.ac.id/id/eprint/159954

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