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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 257 Documents
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Pembuatan Alat Pengiris Bawang Kapasitas 50 kg/jam Deo G Tampubolon; Tino Hermanto; Mochamad Iqbal Rokhim
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 Joel Hasoloan Simatupang; 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.
Evaluasi Performa Termal dan Listrik Robinson Engine dengan Fluida Kerja Uap Bertekanan Rendah dari Boiler Kecil Murahmad Parulian Marbun; Jufrizal Jufrizal; Indra Hermawan
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.v4i2.204

Abstract

This study evaluates the thermal and electrical performance of a Robinson steam engine powered by low-pressure steam (≤ 2.5 bar) from a small boiler. Experiments were conducted by varying the steam pressure from 0.5 to 2.5 bar to observe its effects on voltage, current, and power output. Results show that increasing steam pressure raised the voltage from 0 V to 4.52 V and the power output from 0 W to 6.1 W. The total electrical energy generated was 9.726 kJ, with an average conversion efficiency of 0.2127% and a peak efficiency of 0.3045% at 2.5 bar. Despite the low efficiency, the system demonstrates potential for small-scale power generation and educational use in energy conversion studies.
Analisis Proksimat dan Nilai Kalor Biopelet Tandan Kosong Kelapa Sawit (TKKS) sebagai Sumber Energi Terbarukan Eva Riana Br Bangun; 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 Reynaldi Samosir; Jufrizal Jufrizal; Zainal Arif
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; Muhammad Idris
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 Kinerja Termal Mesin Pengering Tipe Shangrai Pengolahan Hasil Pertanian Yoga Prabowo; Willyam Warikson Sinaga; Darianto Darianto; Yopan Rahmad Aldori
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.v4i2.213

Abstract

This study evaluates the thermal performance of the Shangrai-type drying machine for corn processing. Experimental tests were conducted using five blower speeds (1.5–3.5 m/s) controlled by an AC dimmer. Parameters analyzed included drum temperature distribution, initial–final moisture content, and visual drying quality. Results indicate an average operating temperature of 150 °C with a thermal efficiency of 35.6%. Optimum performance was achieved at 2.5 m/s for 30 minutes, producing uniform drying, golden color, and intense aroma. Blower speeds above 3.0 m/s caused overheating and product degradation. The Shangrila dryer is proven to be a feasible technical solution for agricultural MSMEs.
Analisis Pengujian Elastisitas Young Modulus Pada Wood Poylmer Composite Dengan Metode Hot Press Bagus Suranta Sembiring; Yopan Rahmad Aldori; Ari Handoko
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 Kristianto Tarigan; Tino Hermanto; 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 Aldiansyah Putra; Vicky Frans Malau; Jhonatan Lumbantoruan; 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.

Page 15 of 26 | Total Record : 257

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