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All Journal Prosiding Semnastek Jurnal Dinamika Penelitian Industri JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Ilmiah Teknik Mesin "MEKANIK" Jurnal Pengabdian Masyarakat Multidisiplin Mechanical Engineering for Society and Industry IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Aceh International Journal of Science and Technology IRA Jurnal Pengabdian Kepada Masyarakat
Jufrizal Jufrizal
Universitas Medan Area
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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Pengaruh Penambahan Regenerator Terhadap Performansi Mesin Stirling Tipe Gamma Siregar, Zufri Hasrudy; Jufrizal, Jufrizal; Putra, Bintang Kelana
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (26.898 KB) | DOI: 10.35308/jmkn.v8i2.5957

Abstract

Mesin stirling merupakan mesin pembakaran luar dan menggunakan prinsip regeneratif siklus tertutup. Regenerator mesin Stirling berada di antara pemanas dan pendingin yang terdiri dari matriks. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan regenerator terhadap performansi mesin stirling tipe gamma. Metode penelitian ini dilakukan secara eksperimental yaitu dengan mengamati performansi sebelum menggunakan regenerator dan sesudah menggunakan regenerator. Hasil penelitian sebelum menggunakan regenerator diperoleh selisi temperatur maksimum 95,1 ℃, dan rata-rata putaran mencapai 235,6 rpm, menghasilkan torsi tertinggi 0,624 Nm, daya tertinggi 16,430 Watt, dan efisiensi tertinggi sebesar 73,2 %. Sedangkan menggunakan regenerator diperoleh selisi temperatur maksimum 64,5 ℃, dan rata-rata putaran mencapai 153,6 rpm, menghasilkan torsi tertinggi 0,38 N.m, daya tertinggi 6,236 Watt, dan efisiensi tertinggi sebesar 68,4 %. Penambahan regenerator pada mesin Stirling menyebabkan penurunan performansi, ini dimungkinkan karena terjadi penurunan tekanan fluida didalam mesin karena mesin Stirling mCHPSE-012020 masih menggunakan tekanan atmosfir sebagai tekanan kerja.
Pengujian Kinerja Cooling Water untuk Mesin Stirling tipe Gamma Skala Kecil Prasetio, Indra; Jufrizal, Jufrizal; Supriatno, Supriatno
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.146

Abstract

This study aims to evaluate and analyze the performance of cooling water in a small-scale Gamma-type Stirling engine. The research method employed was an experimental approach. The test results show that the inlet water temperature was 27.6 °C, while the average outlet water temperature reached 92.33 °C after 60 minutes of testing. Cooling water with an inlet temperature of 27.6 °C reduced the average heat source temperature from 484.51 °C to 64.78 °C on the compression chamber side. At an airflow rate of 0.006 m³/s, the average cooling effectiveness was recorded at 13%, with the highest value of 19.1% observed at the 55th minute of testing. This study concludes that cooling water effectively reduces the heat source temperature and improves thermal efficiency in a small-scale Gamma-type Stirling engine.
Manufaktur Heater Menggunakan Bahan Pipa Steam untuk Mesin Stirling Tipe Gamma Skala Kecil Kurniawan, Eprian; Jufrizal, Jufrizal; Nurdiana, Nurdiana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.155

Abstract

The design and manufacturing of a heater for a Gamma-type Stirling engine on a small scale require careful consideration of key factors to ensure thermal efficiency and optimal performance. This study utilized AutoCAD software to design the heater precisely according to operational requirements. The heater functions as a critical component that transfers heat from the source to the working fluid positioned at the front of the Stirling engine. The manufacturing process employed carbon steel, chosen for its ability to withstand high temperatures and ensure even heat distribution. Test results demonstrated that the manufactured heater could achieve an average temperature of 484.50 °C, reflecting its stability and optimal heat distribution during operation. This stability is a crucial indicator of the heater's thermal efficiency and reliability in supporting the Stirling engine's performance. The study confirms that the applied design process, material selection, and manufacturing techniques successfully produced a heater that meets the design specifications. Thus, this research significantly contributes to developing heater technology for small-scale Stirling engine applications.
Mapping the landscape of WCO biolubricant studies: A Comprehensive bibliometric review with vosviewer Ilmi, Ilmi; Suherman, Suherman; Frida, Erna; Binti Mohd Zulkifli, Nurin Wahidah; Jufrizal, Jufrizal
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12549

Abstract

This study explores the growing field of biolubricants as sustainable alternatives to petroleum-based lubricants. This paper highlights the gap in the current literature regarding biolubricants from Waste Cooking Oil (WCO) using a mixed-methods approach of bibliometric analysis and systematic literature review (SLR). A bibliometric analysis was conducted using data from the Scopus database, covering 650 publications from 2000 to 2024. Furthermore, a systematic literature review provides a comprehensive analysis of the methods used for synthesizing biolubricants from WCO, particularly evaluating the types of catalysts and methods employed that influence the physicochemical properties. The findings show a significant increase in research activity from 2018 to 2022, with Malaysia and India leading in this area. Key research trends identified include catalysts, oxidation stability, and transesterification processes. Optimal conditions for biolubricant production from WCO were achieved using an Amberlyst catalyst at 81°C, yielding a 99% conversion rate. These results highlight the potential of WCO-derived biolubricants to support more sustainable industrial applications. This study is the first to combine bibliometric analysis and systematic literature review methods to provide a comprehensive overview of research on WCO-based biolubricant production. Through a systematic review of existing studies, this research provides a useful resource for industry professionals and renewable energy policymakers in their efforts.
Implementasi PLTS pada Sistem Pakan Ikan Otomatis untuk Meningkatkan Efisiensi Pengelolaan Peternakan Ikan: Studi Kasus Skala Uji Coba Aldori, Yopan Rahmad; Jufrizal, Jufrizal; Darianto, Darianto; Hermawan, Indra; Supriatno, Supriatno; Darwin, Felix
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 2 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v2i3.153

Abstract

This Community Service aims to develop and implement solar-powered automatic fish-feeding tools to improve operational efficiency in fish farming. Using 10 WP solar panels is expected to reduce dependence on expensive and unstable conventional electrical energy, especially in areas with limited energy access. The method used in this activity was a direct trial at the Medan City Fish Seed and Cultivation Center, where several vital parameters were measured, such as tilt angle, azimuth angle, zenith angle, and time clock angle. The test results show that this device can operate effectively by utilizing solar energy optimally, especially when the sun's position is at the right angle. The efficiency of solar panels reaches a high level, allowing the battery to be charged in a relatively short time. The conclusion of this activity shows that this tool can help fish farmers automate feeding in a sustainable and environmentally friendly manner while reducing operational costs. This technology has the potential to be applied more widely, providing a positive impact in increasing productivity and saving costs in fish farming businesses.
Analysis of Bending Strength of Composite Materials in Bipolar Plates for Fuel Cell Technology Zarmawan, Husri; Iswandi, Iswandi; Hermanto, Tino; Darianto, Darianto; Hermawan, Indra; Idris, Muhammad; Jufrizal, Jufrizal; Rahmad Aldori, Yopan
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol. 8 No. 2 (2025): Journal of Electrical and System Control Engineering
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v8i2.14227

Abstract

This study aims to this study was to examine the effect of polypropylene (PP) plastic and activated carbon (AC) composition in a plastic composite material. The composite material was mixed using an internal mixer at a processing temperature of 220°C and a speed of 50 rpm. The mixture was then molded with dimensions of 100 mm in length, 15 mm in width, and 2,5 mm in thickness. The sample molding was performed using a compression molding method with a pressure of 1500 MPa at 250°C and a holding time of 300 minutes. Subsequently, the samples were cut according to the bending test dimensions following ASTM D790-03 standards, with dimensions of 100 mm x 12.7 mm x 2.5 mm. The test results for the polypropylene-activated carbon composite in the first composition showed a maximum stress point of 36.95 MPa and an elastic modulus of 4.3096 MPa, while the second composition showed a maximum stress point of 34.58 MPa and an elastic modulus of 3.371 MPa. These findings indicate that increasing the activated carbon composition in polypropylene polymer results in a reduction in bending strength.
Manufacture of a Horizontal Double-Screw Mixer for Fermented Feed Production with a 100 kg Batch Capacity Ariyudha, Andhika; Darianto, Darianto; Hermanto, Tino; Rahmad Aldori, Yopan; Iswandi, Iswandi; Hermawan, Indra; Idris, Muhammad; Jufrizal, Jufrizal
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol. 8 No. 2 (2025): Journal of Electrical and System Control Engineering
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v8i2.14228

Abstract

In general, every livestock needs feed in the form of a mixture of livestock feed. The livestock feed fermentation process is currently phenomenal because it provides benefits that are felt by farmers. Maybe many people know the fermentation as a process of making supplement drinks only. It turns out not, the fermentation process can be used as an alternative to making high-quality livestock feed. In addition to being very simple to make, making feed by fermentation also saves time and money, because farmers are no longer busy with herding or grazing. This horizontal mixer machine has a capacity of 100 kg / Batch. In making this machine includes manufacturing processes such as: welding, grinding, drilling, bending, cutting torch or gas cutting, and non-permanent joints, namely nut and bolt joints. The components of the machine are: frame, tube, double screw, axle shaft, bossing, gear box, housing bearing, block bearing, pulley, v-belt, and electric motor. And then assembled and put together into a machine. From the above explanation, the following conclusions can be drawn: 1. Horizontal mixer machine with a tube diameter of 60 cm and a width of 90 cm, is capable of mixing 100 kg/batch of animal feed. 2. Horizontal mixer machine using a double screw produces a more homogeneous mixture compared to using the manual method.
Proses Manufaktur Piston Displacer untuk Mesin Stirling Tipe Gamma Skala Kecil Kurniawan, Aldi; Jufrizal, Jufrizal; Nurdiana, Nurdiana
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.v4i1.176

Abstract

This study aims to design and manufacture a displacer piston for a Gamma-type Stirling engine using steam pipe material due to its heat-resistant properties. The manufacturing process involved cutting, turning with a conventional lathe, and TIG welding. The final product dimensions were 65.75 mm in diameter, 60.20 mm in height, and 321.20 mm. Measurement results showed that the dimensional tolerances were within the design limits, and no leakage was found in the joints after visual inspection and basic functional testing. The study demonstrates that a simple process can produce a piston suitable for laboratory-scale applications.
Identifikasi Jenis Aliran Pada Sistem Pipa Bertekanan Dengan Pompa Seri Dan Paralel Ginting, Hotman; Lingga, Jimy; Jufrizal, Jufrizal; Hermawan, Indra
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.v4i1.183

Abstract

Centrifugal pumps are widely used to move fluids through increased pressure efficiently. This study examines the effect of series and parallel pump configurations and valve opening variations on flow characteristics in a pressurized piping system. A laboratory experiment method with two repetitions was used. The results showed turbulent flow at 50%, 75%, and 100% valve openings with Reynolds numbers above 10,000. In comparison, at a 25% opening, series pumps tend to produce laminar flow (Re < 600), and parallel pumps maintain transitional/turbulent flow (Re > 4,000). The recommendation is to use series pumps for high pressure and parallel for large discharge, with a minimum valve opening of 25% for optimal efficiency.  
Analisis Performa Sepeda Motor Sport 155cc 2 Tak dengan Beragam Jenis Bahan Bakar Nasution, Kurnia Rizky; Jufrizal, Jufrizal; Supriatno, Supriatno
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.v4i1.184

Abstract

The development of two-wheeled automotive technology continues to advance, especially in fuel efficiency, engine performance, and emissions. One key factor affecting engine performance is fuel quality. This study investigates the effect of fuel octane rating on torque and power in a 155cc 2-stroke sport motorcycle at 3500–8000 rpm. Three fuel types were tested: Pertamax, Pertamax Turbo, and Pertalite. Maximum torque was recorded at 6000 rpm with values of 11.3 Nm (Pertamax), 11.8 Nm (Pertamax Turbo), and 11.6 Nm (Pertalite). Maximum power was observed at 8000 rpm with 8.2 kW, 8.6 kW, and 8.3 kW, respectively. In addition to octane rating, compression ratio, and engine speed significantly influence torque and power output.
Co-Authors . Zainuddin Abdullah, Ilmi Abdullah, Ilmi Ahmadi, Doni Arif, Zainal Ariyudha, Andhika Barita Barita Barita, Barita Binti Mohd Zulkifli, Nurin Wahidah Bobby Umroh Br Bangun, Eva Riana Darianto, Darianto Darwin, Felix Edwin Harianto Sipahutar Eli Simanjuntak Erna Frida Eswanto Eswanto Eswanto Eswanto Eswanto Is Eswanto, Eswanto Farel H. Napitupulu Farel H. Napitupulu Ginting, Hotman Hamdani Hamdani Haniza Hapzi Ali Harahap, Uun Novalia Harry Parulian Limbong Hasanuddin Hasanuddin Hidayah, Muhammad Himsar Ambarita Husni Thamrin Ilmi Abdullah Ilmi Ilmi Ilmi Ilmi, Ilmi INDRA HERMAWAN Irfandi Irfandi, Irfandi Iswandi Iswandi Iswandi Iswandi Joel Davidson Hasibuan Jos Susilo Kurniawan, Aldi Kurniawan, Eprian Lingga, Jimy Lubis, Rahmadsyah Mahyunis Marwan Marwan Mawardi Moraida Hasanah Muhammad Dendy Agusdiandy Muhammad Idris Muhammad Idris Muhammad Razali Munajat Munajat Munthe, David Jomantes Nasution, Kurnia Rizky Nurdiana Nurdiana Nurdiana Nurdiana Nurdiana Nurdiana Nurhidayatullah Nurhidayatullah Prasetio, Indra Putra, Bintang Kelana Ramadhan, Fandy Saktisahdan, Tengku Jukdin Samosir, Reynaldi Sari Farah Dina Selamat Riadi Simatupang, Joel Hasoloan Siregar, Zufri Hasrudy Siti Masriani Rambe Suherman, Suherman Supriatno, Supriatno Sutrisno, Franky Syahputra, Muhammad Novrin Rizky Syukarni Ali Tarigan, Dicky Adrian Sera Tino Hermanto Tony Siagian Yoko Nikodemus Manik Yopan Rahmad Aldori zainuddin zainuddin Zainuddin, Zainuddin Zarmawan, Husri zulfikar, Achmad Jusuf