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Perum Graha Garuda Mas Blok II No. 39 Dusun V Desa Sigara-Gara Kecamatan Patumbak Kabupaten Deli Serdang Provinsi Sumatera Utara, Indonesia, Kode Pos: 20361.
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IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Published by CV. IRA PUBLISHING
ISSN : -     EISSN : 29624290     DOI : https://doi.org/10.56862/irajtma
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) fokus pada artikel ilmiah hasil penelitian dan review dalam bidang teknik mesin dan aplikasinya yang antara lain meliputi: 1. Konversi energi 2. Mekanika 3. Material 4. Manufaktur 5. Lain-lain yang relevan
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 157 Documents
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Pembuatan Alat Pengiris Bawang Kapasitas 50 kg/jam Tampubolon, Deo G; Hermanto, Tino; Rokhim, Mochamad Iqbal
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.200

Abstract

This study aims to design and implement a shallot slicing machine with a 50 kg/hour capacity to improve production efficiency among food-sector MSMEs. The machine features an elbow-iron frame, a 0.5 HP electric motor, and a pulley-V belt transmission system driving stainless steel blades. Performance testing evaluated actual capacity, transmission stability, and slice uniformity. Results show the machine operates stably with near-target capacity and produces relatively consistent slices. The estimated cost of IDR 6,700,000 is economical for small businesses. The design’s strength lies in its simplicity, hygienic materials, and affordability. This machine is expected to offer an appropriate technological solution to enhance productivity and product quality in shallot processing.
Analisis Efisiensi Termal Kompor Biomassa Tipe Gasifier Downdraft dengan Variasi Massa Campuran Arang Kayu dan Wood Pellet Simatupang, Joel Hasoloan; Jufrizal, Jufrizal; Supriatno, Supriatno
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.201

Abstract

This study analyzes the thermal efficiency of a downdraft gasifier-type biomass stove using various fuel masses of wood charcoal and wood pellets. The Water Boiling Test (WBT) method was applied with fuel masses of 0.5 kg, 0.75 kg, 1 kg, and 1.5 kg. Observed parameters included thermal efficiency, fuel consumption rate (FCR), power input, and power output. The highest thermal efficiency, 14%, was achieved with 1.5 kg of wood pellets, while charcoal showed a decrease in efficiency at 1 kg. FCR increased with charcoal but decreased with wood pellets, indicating better combustion efficiency. Power input and output increased with higher fuel mass. These findings highlight the importance of fuel type and mass optimization in improving biomass stove performance, thereby supporting Indonesia's transition to renewable energy.
Analisis Proksimat dan Nilai Kalor Biopelet Tandan Kosong Kelapa Sawit (TKKS) sebagai Sumber Energi Terbarukan Br Bangun, Eva Riana; Jufrizal, Jufrizal; Nurdiana, Nurdiana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.205

Abstract

The palm oil industry in Indonesia generates a large amount of solid waste in the form of Empty Fruit Bunches (EFB). This waste is often underutilized and poses environmental challenges. The high lignocellulosic content of EFB offers significant potential for its development as a renewable biomass fuel. This study aims to evaluate the proximate composition and calorific value of EFB to assess its feasibility as a raw material for bio pellets. The experimental procedures included drying, shredding, grinding, and palletization, followed by laboratory testing based on SNI 8021:2014, SNI 7709:2019, and EN ISO 17225 standards. The results showed a moisture content of 7.85% and an ash content of 7.97%, both within acceptable limits, although the ash level was relatively high. Furthermore, EFB contained 24.20% carbohydrates and 37.99% crude fiber, which contributes to the structural stability of the bio pellets. The calorific value obtained was 1200 kcal/kg, which is considerably lower than values reported in previous studies (≥3500 kcal/kg). These findings highlight the potential of EFB as a renewable energy source while underscoring the need for process optimization to meet quality standards, with possible applications in small-scale and household energy generation.
Desain Tangki Klakson pada Mobil untuk Penyimpanan Udara Bertekanan 8 bar Samosir, Reynaldi; Jufrizal, Jufrizal; Arif, Zainal
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.207

Abstract

The air tank is a crucial component in pneumatic car horn systems, serving to store compressed air to produce a loud and responsive sound. Most pressure vessel studies have focused on high-pressure applications in industry. At the same time, research on low-pressure tanks for automotive use remains limited, particularly those referring to ASME Section VIII Division 1 standards. This study designed a horizontal cylindrical air tank using the thin-walled cylinder approach with steel plates (yield strength 250 MPa, safety factor 4). The analysis showed a minimum wall thickness of 1.18 mm, while the actual thickness of 3 mm provides additional safety margins. The circumferential stress of 24.67 MPa and longitudinal stress of 12.34 MPa are well below the allowable stress of 62.5 MPa. These results confirm that the design is safe and efficient, contributing to the development of low-pressure pressure vessels for automotive applications.
Pengaruh Tekanan Uap Boiler Kecil terhadap Kinerja Mekanis Robinson Engine pada Tekanan Maksimum 2,5 bar Hamdani, Hamdani; Jufrizal, Jufrizal; Idris , Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.210

Abstract

  This study analyzes the effect of steam pressure variations from a small boiler on the mechanical performance of a Robinson Engine at a maximum pressure of 2.5 bar. A quantitative experimental method was applied with four pressure variations (1.0, 1.5, 2.0, and 2.5 bar). Performance parameters measured included rotational speed, torque, and power, with LPG fuel and water volume maintained as control variables. Results show a significant positive relationship between steam pressure and engine speed; increasing pressure from 1.0 to 2.5 bar raised the speed from 526.2 to 975.6 rpm. These findings highlight the dominant role of steam pressure in engine performance and provide initial quantitative data for developing micro-scale renewable energy-based power plants.
Analisis Pengujian Elastisitas Young Modulus Pada Wood Poylmer Composite Dengan Metode Hot Press Sembiring, Bagus Suranta; Aldori, Yopan Rahmad; Handoko, Ari
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.226

Abstract

This study aims to determine the Elasticity of Wood Polymer Composite (WPC). The composite was made using 15 grams of wood powder and 30 grams of plastic sheets, processed for 60 minutes at a pressure of 8 MPa. The temperature used was 125°C. The hot press method is one of the techniques commonly used to produce WPC. In this process, a mixture of wood fibre and plastic sheets is heated and pressurised below the temperature to compact and form the composite according to the desired mould. By creating a dogbone-shaped specimen with a distinctive shape, featuring a narrowed centre, the design is intended to ensure that failure occurs at the centre of the specimen when tested, thereby providing more accurate results about the material's strength.
Proses Pembuatan Mesin Peniris Minyak Kentang Untuk Skala UMKM Tarigan, Kristianto; Hermanto, Tino; Rahmatullah, Rahmatullah
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.276

Abstract

Micro, Small, and Medium Enterprises (MSMEs) in the food sector still face obstacles at the stage of drying potato oil. This process reduces quality, accelerates cooling, and reduces product shelf life. This research designed a simple centrifugal force-based oil slicing machine with food-grade material that is safe to use. Tests showed the machine was able to lower the oil content by up to 28% in a duration of 60 seconds per cycle, with an adequate capacity of five kilograms of fries. This innovation improves production efficiency, quality, and competitiveness of MSMEs in the processed food industry.
Perancangan Mesin Milling untuk Pembuatan Plat Dwikutub pada Teknologi Fuel Cell Putra, Aldiansyah; Malau, Vicky Frans; Lumbantoruan, Jhonatan; Iswandi, Iswandi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.277

Abstract

This research aims to design and test the performance of a CNC-based mini milling machine as a lightweight milling solution at a relatively affordable cost. The research stage is carried out systematically, starting with the selection of concepts and proceeding through morphological table analysis, followed by the component manufacturing process, which utilizes CNC turning machines to ensure dimensional precision. After that, the main components were assembled, including aluminum tables, stepper motors, trapezoidal threads, DC motor spindles, and support frames that function to maintain structural stability. The tests focus on the stability of axis motion and the precision level of cutting light materials. The test results indicate that the CNC machine operates within acceptable tolerances, is stable enough, and precise for simple cutting applications, making it suitable for use in engineering education and small-scale production, with good operational efficiency.
Analisa Kekerasan Dengan Pengujian Vickers Pada Wood Polymer Composite Menggunakan Metode Hot Press Pranata, Hadi; Aldori, Yopan Rahmad; Handoko, Ari
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.279

Abstract

Wood Polymer Composite (WPC) is a composite material composed of wood powder and recycled plastic. This material has been widely developed as an environmentally friendly alternative since it combines the natural properties of wood with the advantages of polymers. The manufacturing process involves mixing wood powder and plastic, followed by heating and molding into various structural forms. WPC exhibits high strength, durability, and resistance to environmental conditions, making it a popular alternative to solid wood. A typical composition consists of 50% wood powder and 50% high-density polyethylene (HDPE). In addition to improving wood utilization efficiency, WPC also contributes to reducing plastic waste accumulation that is difficult to decompose in the environment.
Analisis Penggunaan Energi Listrik Mesin Panen Buah Sawit Tenaga Listrik Orlando, Corlenius Try; Iswandi, Iswandi; Idris, Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.280

Abstract

This article analyzes the durability of electrical energy in palm fruit cutter machines as an efficient and environmentally friendly innovation in the field of harvesting tools. The machine is designed using a 12V 15A DC motor that converts the rotary motion into translation through a crank slide mechanism, powered by a 35Ah battery. Tests were carried out on oil palm trees 3–5 meters high by monitoring power consumption and operating time. The results show that cutting thick fronds requires 15 Watts/minute, while thin ones require 11.25 Watts/minute. The effective operation duration reaches 1 hour and 52 minutes. Performance factors are influenced by battery condition, cutting load, transmission efficiency, and cutting tool design.

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