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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JMPM (Jurnal Material dan Proses Manufaktur) Quantum Teknika Politeknosain
Agus Kurniawan
Politeknik ATMI Surakarta
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering

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Journal : Politeknosain

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Studi Eksperimental Nilai Kekerasan Semikonduktor ZnO terhadap Variasi Beban Kompaksi Agus Kurniawan; Bayu Prabandono; Sularman
Politeknosains Vol 15 No 2 (2016): Jurnal Politeknosains Volume 15 Nomor 2 - September 2016
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

One important process in manufacturing pellet material is a compaction. This research will study the hardness value at ZnO semiconductor material that is compacted with different pressure. The first material is pure ZnO that was grinded with agate mortar, filtered and compacted with pressure are 10 bar, 20 bar and 30 bar so the pellet form were shaped. The size of pellet is Æ 13 x 2 mm. Furthermore, these pellet sintered at temperature 1300oC than it will test by vikers microhardness testing. The testing result is that the greatest vikers microhardness at the material that is compact at 30 bar. The mean value of it is 213.85 Hv. The greater of compacting pressure given the higher value of the material's hardness. Nevertheless, the magnitude of compacting pressure must consider the ability of the compacting mold.
Material Semikonduktor ZnO Didoping Cu Untuk Meningkatkan Konduktivitas Thermal Bayu Prabandono; Agus Kurniawan
Politeknosains Vol 15 No 1 (2016): Jurnal Politeknosains Volume 15 Nomor 1 - Maret 2016
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

LGV (liquefied gas for vehicle) is one of the alternative fuel, which prioritized for a fuel diversification program of transportation sector in Indonesia. Having different characteristics and properties of gasoline fuel, the use of LGV fuel will have an effect on the working parameters of an engine. Based on that, this research is conducted to analyze the effect of using LGV fuel at a mass air flow rate and fuel rate in passenger cars. Through this research also expected as an act to support the diversification fuel program that proclaimed by Indonesia Government. Passenger cars used in this research have a different engine capacity, i.e., 1200 cc and 1500 cc. Measurement of mass air flow rate and fuel rate are performed with the throttle position variation (absolute throttle position) from 14% to 30% on third gear. The results obtained indicate that there is a decrease in air and fuel flow rate of 4% for the test car Honda Mobilio (1500 cc) and 2% for Mitsubishi Mirage (1200 cc). In addition, the air fuel ratio (AFR) of LGV fuel has the same range like fuel petrol mixing, the value of the measured air fuel ratio is 14.4-14.8 for Honda Mobilio and 13.5-14.6 for Mitsubishi Mirage. The lower value of fuel flow rate than gasoline fuel, prove that the use of the LGV fuel is more efficient and cheaper (due to the LGV price) than gasoline. In addition, LGV fuel also more environmentally friendly than gasoline fuel as seen from result of emission testing done by the most researchers.
Co-Authors Aditya Nugraha Agnes Putri Kartika Santosa Alex Satria Wibawa Alexander Satya Wiratama Andhy Rinanto Andronikus Cahya Pradana Baruna Arya Putra W Bayu Prabandono Bobby Muhammad R Cahyanto Onky S Devinta Putri Ardani Dicky Bondan Wirawan Faris Abyan Adam Hendsan Bhinar Prayoga Hoedi Prasetyo Mirza Yusuf Mirza Yusuf Mirza Yusuf Nikolaus Alun Prapanca H Rafael Bhima Sena Purnama Putra Santoso Kalim Sularman Taji Harya Prakosa Yudit Cahyantoro NS