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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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Analisis Pembakaran Ganda Bahan Bakar Natural Gas dan Biosolar pada Mesin Diesel Satu Silinder: Studi Efisiensi Termal dan Performa Narantoko, Resi Aji; Riza, Abrar; Tanujaya, Harto
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.v4i2.219

Abstract

This research discussion aims to determine the performance of the Jiandong 170F single-cylinder Diesel engine when operating on dual-fuel combustion, utilizing biodiesel as the primary fuel and natural gas. In this study, RCCI and low-temperature combustion (LTC) are methods of fuel mixing by using a mixture of B30 biodiesel fuel and natural gas. The characteristic of natural gas with a low cetane number causes the combustion process to occur at lower temperatures, resulting in early ignition of the upper dead point. This condition can be examined using the HCCI method. The test results showed a 4% increase in actual torque, worth 5.8 Nm, compared to the use of pure biodiesel. In addition, there is an increase in thermal efficiency of 5-10%, which is worth an average of 30%. This makes combustion more perfect, so that it contributes to a reduction in residual emissions or NOx.
Analisis Eksperimental Pengaruh Groundstrap terhadap Torsi dan Daya Mesin Sepeda Motor 4-Langkah To, Yonas; Priyono, Priyono; Bianome, Wofrid Erlista; Manesi, Damianus
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.v4i2.222

Abstract

This study aims to analyze the effect of groundstrap installation on motorcycle torque and power. The ground strap, a copper wire coil wrapped around the ignition coil cable, functions to suppress stray frequencies, stabilizing the current flow to the spark plug for optimal combustion. The experiment involved three conditions: standard (no groundstrap), a 0.20 mm groundstrap, and a 0.18 mm groundstrap. Results showed improved performance with both groundstrap configurations. Maximum power increased from 9.16 HP (standard) to 9.30 HP (0.20 mm) and 9.33 HP (0.18 mm). Maximum torque rose from 9.76 N.m to 9.96 N.m (0.20 mm) and 10.09 N.m (0.18 mm). The most significant improvement was achieved with the 0.18 mm groundstrap, yielding an additional 0.17 HP at 7,336 RPM and 0.33 N · m at 6,000 RPM. These findings indicate that groundstrap installation positively affects ignition stability and combustion efficiency, offering a simple yet effective solution to enhance engine performance.
Rancang Bangun Sistem Kontrol Otomatis Berbasis Panel Surya pada Mesin Spinner Oil Yanto, Putra Agung Dwi; Roza, Indra; Muthawali, Dede Ibrahim; Kusuma, Budhi Santri; Nasution, Agus Almi
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.v4i2.231

Abstract

Improving efficiency and sustainability in industrial processes is a key focus in modern technological development. This study aims to design an automatic control system for an oil spinner machine using renewable energy from solar panels. The system is intended to enhance operational efficiency, reduce reliance on conventional energy sources, and support environmentally friendly initiatives. It integrates sensors to monitor machine conditions such as speed and raw material levels, with a microcontroller unit connected to solar panels as an alternative energy source. The methodology includes system design, microcontroller programming, solar panel installation, and operational testing. Results show that the system successfully improved machine efficiency, reduced consumption of non-renewable energy, and contributed to lowering carbon emissions. This research provides a significant contribution to the development of renewable energy-based automation systems. It opens opportunities for similar applications in other industrial processes requiring efficient and eco-friendly solutions.
Pengembangan Perangkat Lunak Simulasi PLTU Menggunakan Excel VBA untuk Aplikasi Rekayasa Manggala, Agus; Yerizam, Yerizam; Effendy, Sahrul
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.v4i2.232

Abstract

Coal-fired steam power plants (PLTU) remain essential in electricity generation, especially in countries with abundant coal resources. Thermodynamic modeling based on the Rankine cycle is crucial for both educational and design purposes, but commercial software is often costly and less accessible. This study develops a low-cost simulation tool using Microsoft Excel and VBA to model the Rankine cycle in PLTU systems. Users can input operating parameters, calculate thermodynamic properties using IAPWS-IF97 formulations, and evaluate system efficiency through energy balance analysis. The user-friendly interface features real-time efficiency graphs and energy flow diagrams. Validation results show deviations of less than 5% for key parameters, making this tool effective for engineering education, preliminary feasibility studies, and local research in thermal power generation.
Analisis Eksperimental Pengaruh Jenis Oli Terhadap Suhu dan Konsumsi Bahan Bakar Pada Sepeda Motor 4-Tak 125 cc Rahmadi, Fakhmi Caesar; Mara, I Made; Sutanto, Rudy
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.v4i2.237

Abstract

This study analyzes the effect of oil type on exhaust gas temperature and fuel consumption in a 125cc 4-stroke motorcycle. Three kinds of SAE 10W-40 oil were used: mineral, semi-synthetic, and full synthetic. Tests were conducted at idle with varying rpm and while cruising at varying speeds. Temperature was measured using a thermo gun, while fuel consumption was measured using a burette. Results showed that full synthetic oil produced the most stable temperature and lowest fuel consumption, while mineral oil demonstrated the highest temperature and consumption, especially at high rpm. This efficiency is attributed to the chemical characteristics and thermal stability of the full synthetic oil. This study provides a novel contribution by testing a classic air-cooled motorcycle under static and dynamic conditions, thus better reflecting real-world use.
Analisis Eksperimental Pengaruh Variasi Ketinggian Dome Piston terhadap Performa Mesin 4-Tak Mahendra, Esa Ramdhan Ardi; Mara, I Made; Sutanto, Rudy
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.v4i2.239

Abstract

Internal combustion engines remain the primary power source in transportation by converting fossil fuel energy into mechanical energy. This study examines the effect of piston dome height variations (1 mm, 3 mm, and 5 mm) on the performance of a 4-stroke 87.70 cc engine. A quantitative method was used with a rope brake dynamometer to measure torque, adequate power, fuel consumption, and SFCe, effective at engine speeds ranging from 2000 to 5000 rpm. The highest torque and power were recorded at 4000 rpm, the highest fuel consumption at 5000 rpm, and the highest SFCe at 2000 rpm for all dome height variations. As piston dome height increases, combustion chamber volume decreases, leading to lower compression ratios and reduced combustion efficiency. Therefore, piston design should be aligned with the intended focus on either efficiency or performance.
Analisis Strategi Pemeliharaan Untuk Meningkatkan Efektivitas Mesin Ripple Mill Dengan Pendekatan Keefektifan Peralatan Manullang, Raymond; Lubis, Zulyaden; Raja, Pada Mulia
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.v4i2.243

Abstract

This study aims to analyze the operational effectiveness of the Ripple Mill machine using a TPM maintenance strategy approach by measuring OEE. The method used is descriptive quantitative, with primary data from observations and interviews, and secondary data from factory operational documentation. The evaluation was based on three leading OEE indicators: availability, performance, and quality. It was complemented by an analysis of the six significant losses to identify sources of lost production time. The results show that the average OEE value from January to March 2025 reached 96.53%, exceeding the international standard of ≥85%. The most significant losses came from equipment breakdowns (69.75%), followed by minor breakdowns and idling (18.48%). Preventive maintenance programs, operator training, and spare parts availability are recommended. These results demonstrate the effectiveness of the TPM approach in continuously improving machine performance.
Perancangan Indikator Kinerja Utama Logistik Menggunakan Pendekatan Balanced Scorecard Lubis, Ibnu Farras Azzikri; Nabila, Hadisty; Sembiring, Anita Christine
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.v4i2.244

Abstract

This study aims to design a logistics performance measurement system at PT. XYZ is using the BSC approach combined with KPIs. The company operates in the field of steam turbine maintenance and repair services for the palm oil industry, but does not yet have a structured logistics performance evaluation system. The study was conducted for six months through interviews, observations, questionnaires, and documentation studies. The evaluation covered four BSC perspectives: financial, customer, internal processes, and learning and growth, with KPI analysis for each perspective. The results show that logistics performance fluctuates, especially in the aspects of customer satisfaction and employee training. A relationship was found between the perspectives, namely that decreased training has an impact on increasing delivery errors. The BSC and KPI approach has been proven to provide a comprehensive picture of logistics performance and is relevant to support strategic management. Recommendations include strategy integration, strengthening training, and improving service quality for sustainable efficiency.
Studi Kasus: Optimasi Sistem Perpipaan Dengan Lengkung Ekspansi Tipe V Riswanto, Danur; Pahlevi, Ryan Fitrian; Qolbi, Faiz Nurul; Topattinaya, Eric; Prasetyo, Muhammad Shandy Putra
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.v4i2.245

Abstract

Industrial piping systems that transport high-temperature fluids are susceptible to thermal expansion, which can cause excessive axial stress and structural failure risks. This study aims to optimize the V-Type expansion bend design to enhance material efficiency while ensuring stress levels remain within the allowable limits set by ASME B31.3. Simulations were conducted using CAESAR II software version 2014, incorporating real project data on pipe geometry, materials, and operating conditions. The results indicate that the V-Type expansion bend requires the shortest total pipe length-5452 mm-while producing a thermal stress ratio of 30%, outperforming the U-Type bends by Thermacor (6069 mm, 20.8%) and Bahaa (10000 mm, 15.8%). The V-type configuration also results in lower nozzle loads and moments, making it a safer and more cost-effective solution for field implementation.
Analisis Kekuatan Mata Pisau Pada Mesin Pengolah Sabut Kelapa Audia, Ayu; Suhartono, Roni; Ardin, Masri Bin
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.v4i2.246

Abstract

The design of a coconut fiber processing machine with a conveyor system requires special attention to the performance of the blade, which serves as the main component in the chopping process. Structural failure of the blade can significantly impact machine efficiency and operator safety. Therefore, modeling and structural strength analysis using computer-aided analysis software was conducted to validate the reliability of the blade design before manufacturing. The study focused on Von Mises stress, displacement, and safety factor, considering operational loads such as bending, torsion, tension, and compression applied to the shaft. The simulation results indicate that both stress and deformation remain within safe limits, with a safety factor value that supports long-term operational use. Based on these findings, the blade design is considered structurally secure and suitable for use in a coconut fiber chopping machine.

Page 13 of 16 | Total Record : 157

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