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All Journal Infotekmesin Jurnal Inovasi Teknologi Terapan
Wahyudi, Mego
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Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Efek Pemadatan Panas Pada Komposit Matrik Aluminium Diperkuat Alumina/Baggase Ash Densitas Dan Kekerasan Wiryono, Sukanto; Ade Guna, Tegar; Rodika, Rodika; Wahyudi, Mego
Jurnal Inovasi Teknologi Terapan Vol. 2 No. 1 (2024): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v2i1.153

Abstract

Baggase Ash waste in Indonesia is very abundant, so that in 2021 Indonesia exported 120 metric tons of bagasse to Yokohama, Japan. This study aims to determine the effect of volume fraction and sintering temperature on density and hardness of Aluminum (Al) Matrix Composite reinforced with Alumina (Al2O3) and Baggase Ash using powder metallurgy method. The mixing process of the composite material powders used a ball mill machine with ball ratio parameters of 10:1 and stirring time for 2 hours at a rotating speed of 90 rpm. The parameters set are mechanical fusion for 2 hours, a compaction pressure of 6000 Psi, a sintering temperature varied by three kinds of 550 °C, 580 °C, 610 °C with a holding time duration of 15 minutes, and with three kinds of aluminum matrix fractions, namely 95%, 90%, 85% with alumina alloy reinforcement and baggase ash is 5%, 10%, 15%. Density testing was carried out based on Archimedes' law with reference to the ASTM B962-17 standard, while the hardness test was based on the Brinell portable hardness test with ASTM E110-14 standard. The largest density number is obtained at 5% reinforcement content, that is 2,228 g/cm3 and the largest hardness number is obtained in the 5% sample, that is 41.6 HB.
Pengaruh Pemadatan Dua-arah Penekanan terhadap Densitas dan Kekerasan AMC diperkuat Serbuk Silikon Dioksida Irwansyah, Ricky; Rodika, Rodika; Wanto, Agus; Wahyudi, Mego; Wiryono, Sukanto
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1902

Abstract

The compaction method of powder metallurgy technology is an important process in influencing the density and hardness of the resulting product. This study aims to determine the effect of a one-way compaction method compared to a two-way compaction method on the density and hardness of the resulting composite product. The experimental method for making aluminum matrix composites with silica sand reinforcement applies a compaction pressure of 4500 Psi. Mixing utilizing mechanical alloying used a horizontal ball mill machine. The density test refers to the Archimedes principle with the ASTM B962-17 standard, while the Rockwell Brinel hardness test uses the ASTM E110-14 standard. The results of the sample density test of the two-way compaction method of compaction showed a higher value compared to the sample density of the one-way compaction results, respectively; values of 2.132 g/cm3 and 2.119 g/cm3. The hardness value of the sample resulting from two-way compression compaction also has a higher value than the sample hardness resulting from one-way compression compaction, respectively; worth 43.67 HRB and 36.78 HRB. Furthermore, based on the results of microstructural analysis, the interlocking bonding occurs in composite samples with two-way compaction. It is also better than the interlocking mechanical bonding in composite samples resulting from one-way compaction.
Co-Authors Ade Guna, Tegar Irwansyah, Ricky Rodika Wanto, Agus Wiryono, Sukanto