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All Journal Jurnal Dinamis Jurnal Ilmiah Teknik Mesin "MEKANIK" Jurnal Pendidikan Vokasi Otomotif ATDS Saintech Journal of Engineering Dinamis IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Susri Mizhar
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Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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Analisa Komparasi Sifat Fisis dan Mekanis Piston Sepeda Motor dari Empat Pabrikan Suherman, Suherman; Mizhar, Susri; Putra, Andi; Sutiman, Sutiman; Arifin, Zainal
Jurnal Pendidikan Vokasi Otomotif Vol. 6 No. 2 (2024): (Mei)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpvo.v6i2.72932

Abstract

The piston is an essential component in the internal combustion system. Unfortunately, most piston products on the market are of low quality, which is detrimental to consumers. Most pistons sold in spare parts shops in Medan City have varying prices and different quality. The study compares four manufacturers' chemical composition, microstructure and hardness of the pistons of 4-stroke motorcycles. The four types of pistons were purchased at an automotive component sales shop in Medan city. The pistons were cut by machine and then analyzed for chemical composition, microstructure and hardness. The research results show that the chemical composition of the four-piston manufacturers is almost similar, where the silicon content ranges from 2-3%, which is a hypoeutectic Al-Si aluminium alloy. Interestingly, the hardness values and microstructure of pistons are different. The hardness value for brand X is the highest compared to other products, at 41.16 VHN. Microstructural observations show that the microstructures of manufacturers W, X and Y are similar, where the Si particles are evenly distributed with almost uniform sizes. Meanwhile, the Z manufacturer shows a microstructure with fibrous Si particles with a coarse SDAS size.
Perancangan Mesin Dewatering Untuk Pemisah Sludge Pada Kolam IPAL Pabrik Kelapa Sawit Suherman, Suherman; Mizhar, Susri; Muharnif, Muharnif; Ilmi, Ilmi; Tanjung, Muhammad Subhan Ananda
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.198

Abstract

Sludge generated from the wastewater treatment plant of palm oil mills contains a very high moisture content, which increases volume, handling costs, and poses a potential risk of environmental pollution if not properly managed. One of the main challenges encountered is the lack of a simple, economical small-scale dewatering machine that is suitable for the characteristics of sludge produced by palm oil mill wastewater treatment systems. This study aims to design and fabricate a dewatering machine to separate sludge from water in the wastewater treatment ponds of a palm oil mill. The research method involved designing the machine using SOLIDWORKS software, performing technical calculations of the main components such as motor power, shaft dimensions, belt transmission, and bearings, followed by fabrication and assembly processes. The performance of the machine was then evaluated based on its ability to separate sludge and water. The results indicate that the designed dewatering machine has a capacity of 200 litres per hour with a motor power of 1 HP; however, its performance has not yet reached optimal conditions, as part of the sludge remains attached to the screen, thereby increasing the motor load and hindering the movement of the screw. The findings of this study suggest that the dewatering machine design has the potential for further development through optimisation of the screw geometry and filtration system in order to improve sludge water separation efficiency in palm oil mill wastewater treatment plants.
Co-Authors Abdan Syakura Andi Putra Andika, Miko Ilmi Ilmi, Ilmi Ivan Hamonangan Pandiangan Muharnif M Pandiangan, Hamonangan Rahmad Fauzi Romania, Romania Simatupang, Sugianto Suherman Suherman Suherman, Suherman Sutiman Sutiman, Sutiman Syamsul Arifin Tampubolon, Gerhana Burhanuddin Tanjung, Muhammad Subhan Ananda Winoto, Agung Yulfitra, Yulfitra Yundari, Yundari Zainal Arifin