Jurnal Teknik Mesin
Jurnal Teknik Mesin (JTM) adalah Peer-reviewed Jurnal tentang hasil Penelitian, Karsa Cipta, Penerapan dan Kebijakan Teknologi. JTM tersedia dalam dua versi yaitu cetak (p-ISSN: 2089-7235) dan online (e-ISSN: 2549-2888), diterbitkan 3 (tiga) kali dalam setahun pada bulan Februari, Juni dan Oktober. Focus and Scope: Acoustical engineering concerns the manipulation and control of vibration, especially vibration isolation and the reduction of unwanted sounds; Aerospace engineering, the application of engineering principles to aerospace systems such as aircraft and spacecraft; Automotive engineering, the design, manufacture, and operation of motorcycles, automobiles, buses, and trucks; Energy Engineering is a broad field of engineering dealing with energy efficiency, energy services, facility management, plant engineering, environmental compliance, and alternative energy technologies. Energy engineering is one of the more recent engineering disciplines to emerge. Energy engineering combines knowledge from the fields of physics, math, and chemistry with economic and environmental engineering practices; Manufacturing engineering concerns dealing with different manufacturing practices and the research and development of systems, processes, machines, tools, and equipment; Materials Science and Engineering, relate with biomaterials, computational materials, environment, and green materials, science and technology of polymers, sensors and bioelectronics materials, constructional and engineering materials, nanomaterials and nanotechnology, composite and ceramic materials, energy materials and harvesting, optical, electronic and magnetic materials, structure materials; Microscopy: applications of an electron, neutron, light, and scanning probe microscopy in biomedicine, biology, image analysis system, physics, the chemistry of materials, and Instrumentation. The conference will also present feature recent methodological developments in microscopy by scientists and equipment manufacturers; Power plant engineering, the field of engineering that designs, construct, and maintains different types of power plants. Serves as the prime mover to produce electricity, such as Geothermal power plants, Coal-fired power plants, Hydroelectric power plants, Diesel engine (ICE) power plants, Tidal power plants, Wind Turbine Power Plants, Solar power plants, Thermal engineering concerns heating or cooling of processes, equipment, or enclosed environments: Air Conditioning; Refrigeration; Heating, Ventilating, Air-Conditioning (HVAC) and Refrigerating; Vehicle engineering, the design, manufacture, and operation of the systems and equipment that propel and control vehicles.
Articles
326 Documents
<![CDATA[Performance Analysis of R600a as a Replacement for R134a in a Household Refrigeration System ]]>
<![CDATA[Sudarma, Andi Firdaus]]>;
<![CDATA[Carles, Henry]]>;
<![CDATA[Azhar, Azmi]]>;
<![CDATA[Akmal, Muhammad]]>;
<![CDATA[Sirait, Alfa Firdaus]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i2.32326
<![CDATA[This study evaluates the performance of a 50-liter mini refrigerator using R600a as an alternative to the factory-default refrigerant, R134a. The experimental setup included pressure gauges and digital thermometers to measure key parameters such as temperature and pressure at critical points in the refrigeration cycle. Tests were conducted under two scenarios: no-load and a 4 kg chicken meat load. Initially, the system operated with R134a at 16 bar and 20 g charge before being evacuated and recharged with R600a at the same pressure. Data was collected over a 10-minute period under stable conditions and analyzed using a P-h (Pressure-Enthalpy) diagram to determine enthalpy, refrigeration effect, compressor work, and coefficient of performance (COP). The effect of using R600a, efficiency increased 4% without load and 7% with load operation compared to R134a system. While COP actual has increased 5% and 10% respectively. The results indicate that R600a offers comparable performance to R134a while presenting potential advantages in terms of energy efficiency and environmental impact. These findings contribute to the ongoing evaluation of R600a as a sustainable replacement for R134a in household refrigeration applications.]]>
<![CDATA[Optimization of Impact and Thermal Performance of Phenolic Composites through Bentonite Reinforcement ]]>
<![CDATA[Gojandra, Farda Pega Libra]]>;
<![CDATA[Priyanto, Kaleb]]>;
<![CDATA[Kurniadi, Ninda]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i2.33593
<![CDATA[This study aims to determine the effect of the addition of montmorillonite bentonite powder on the mechanical properties and burn resistance of phenolic resin-based composites. Composite samples were made with variations in bentonite weight fractions of 0%, 5%, 10%, and 15%. The impact test was carried out using the Izod method to determine the energy absorption and impact price, while the burn resistance was tested based on the ASTM D635 standard to determine the Time of Burning (TOB) and the Rate of Burning (ROB). The test results showed that the addition of bentonite lowered the impact price, with the highest value of 0.0082 J/mm² in the 0% fraction and the lowest of 0.0008 J/mm² in the 5% fraction. The highest absorption energy is obtained in the 10% fraction of 0.145 J. This decrease in mechanical performance is influenced by the inhomogeneous distribution of the catalyst and the presence of voids in the composite structure. In contrast, the addition of bentonite provides a significant increase in burn resistance. Composites with a fraction of 15% show the highest TOB of 20 seconds and the lowest ROB of 9.4 mm/min, indicating increased flame resistance. The mineral content of montmorillonite in bentonites, such as silica and alumina, contributes to slowing down the rate of combustion through increased material density and stable thermal properties. The results of this study show that montmorillonite bentonite powder has the potential to be used as a flame retardant additive in composite materials, but it needs to be studied further to maintain a balance between fire resistance and mechanical strength.]]>
<![CDATA[UTILIZATION OF CORN COB WASTE AS COMPOSITE BOARD (FIBERBOARD) WHICH WILL BE USED AS SOUNDPROOF WALLS ]]>
<![CDATA[Irwan, Yusril]]>;
<![CDATA[Hurahman, Agus Patih]]>;
<![CDATA[Amanullah, Muhammad Naufal]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i2.33537
<![CDATA[Currently, Ciherang Village in Nagreg Regency has abundant corn plantations that serve as the primary livelihood for its residents. The villagers mainly utilize corn kernels for food processing or resale, while the corn cobs are partially used to produce briquettes. However, a large amount of corn cob waste remains unutilized, often discarded into rivers or left in front of houses, creating an unpleasant sight and odor.One potential solution is to process the corn cob waste into composite boards (fiberboard), which are planned to be used as soundproofing materials for rooms or motor vehicles. This initiative aims to promote waste utilization, recycling, and contribute to the green economy. To assess the soundproofing characteristics of the fiberboard, several tests will be conducted, including acoustic testing, Scanning Electron Microscopy (SEM) analysis, vibration, density, recovery, and water absorption testing.]]>
<![CDATA[FLEXURAL CHARACTERISTICS OF ROLL-WRAPPED GFRP COMPOSITE HOLLOW SQUARE TUBE ]]>
<![CDATA[Priyanto, Kaleb]]>;
<![CDATA[Haniel, Haniel]]>;
<![CDATA[Palmiyanto, Martinus Heru]]>;
<![CDATA[Priyambodo, Bambang Hari]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i2.33558
<![CDATA[This research characterizes the bending behavior of hollow square tube glass fiber-reinforced polymer (GFRP) composites using the roll-wrapping method. CSM (Chopped Strand Mat) and WRM (Woven Roving Mat) glass fibers were chosen as reinforcing constituents with epoxy as the matrix. Glass fiber was chosen because it has strength, stiffness, lightness, corrosion resistance and high-temperature resistance. These properties can be utilized for frame and structural applications in various types of transportation equipment. The roll-wrapping technique was chosen for manufacturing GFRP composite hollow square tubes. The roll-wrapping technique is the simplest method and does not require a lot of money. The bending test using the Three Point Bending method is based on the ASTM D7264 test standard. In addition, macroscopic observations of the specimen's cross-section after experiencing a bending load are carried out to determine the product failure criteria. Bending tests were conducted on two types of GFRP composites, hollow square tube products produced from CSM and WRM fibers. The bending test results showed that the CSM fiber-reinforced composite has higher stress values (167.122 MPa) and strain (0.055%) compared to the WRM fiber-reinforced composite, which has stress values of 78.339 MPa and strain of 0.030%. The results of macro photo analysis show that random fiber composites dominate tensile failure while woven fiber composites dominate compressive failure. Failure analysis through macro photos is a critical process in determining the physical root cause of the problem]]>
<![CDATA[Analysis of Adhesion Strength and Surface Hardness of 6061 Aluminum Alloy Resulting from Powder Coating with Variations in Sandblasting Process Time ]]>
<![CDATA[Hasugian, Panca Putra]]>;
<![CDATA[Salahudin, Xander]]>;
<![CDATA[Mulyaningsih, Nani]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i2.32946
<![CDATA[The success of powder coating is highly dependent on specimen preparation, one of which is sandblasting. This study aims to analyze the effect of variations in sandblasting time on surface roughness, adhesion strength, and surface hardness of powder coated 6061 aluminum alloy. The research method used was quantitative experimental. Specimens measuring 50 mm × 50 mm × 3 mm were sandblasted with time variations of 15 seconds, 35 seconds, and 55 seconds, and their surface roughness was measured. Furthermore, the specimens that have undergone the sandblasting process will be continued for the powder coating process and tested for adhesion strength and surface hardness. The results showed that the highest roughness, adhesion strength, and surface hardness were found in the 55-second variation with a roughness value of 6.18 µm, an adhesion strength value of 5.63 MPa, and a surface hardness value of 14.45 VHN. This shows that the longer the sandblasting time, the higher the surface roughness, the higher the adhesion strength and the surface hardness.The success of powder coating is highly dependent on specimen preparation, one of which is sandblasting. This study aims to analyze the effect of variations in sandblasting time on surface roughness, adhesion strength, and surface hardness of powder coated 6061 aluminum alloy. The research method used was quantitative experimental. Specimens measuring 50 mm × 50 mm × 3 mm were sandblasted with time variations of 15 seconds, 35 seconds, and 55 seconds, and their surface roughness was measured. Furthermore, the specimens that have undergone the sandblasting process will be continued for the powder coating process and tested for adhesion strength and surface hardness. The results showed that the highest roughness, adhesion strength, and surface hardness were found in the 55-second variation with a roughness value of 6.18 µm, an adhesion strength value of 5.63 MPa, and a surface hardness value of 14.45 VHN. This shows that the longer the sandblasting time, the higher the surface roughness, the higher the adhesion strength and the surface hardness.]]>
<![CDATA[DESIGN ANALYSIS OF AXIAL FLUX PERMANENT MAGNET GENERATOR FOR EXHAUST AC VERSION-3 TYPE B OUTPUT WIND POWER PLANT PROTOTYPE ]]>
<![CDATA[Alam, Muhammad Ramadhan Noor]]>;
<![CDATA[Golwa, Gian Villany]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i2.15993
<![CDATA[Outside AC exhaust wind power plant is one of the micro-scale renewable energies developed in the last five years. One of the main components of a power plant is a generator. The generator is a device that converts mechanical energy into electrical energy. An axial flux permanent magnet generator is believed to be the most appropriate generator for a power plant with a low-speed wind power source, such as outside AC exhaust. A design analysis needs to be done to produce an axial flux permanent magnet generator capable of producing 12vdc electric voltage, which will be used to charge the battery. This research uses the theoretical calculation analysis method on three rotor designs with different sizes and obtained rotor design 1 with the most considerable maximum flux value of 0.000998352 Wb. The calculation of the generator output planning signifies that to obtain an output voltage of 12 Vdc at a frequency of 20 Hz, 166 turns of wire are needed. The output of 12.8 Vdc was successfully generated after the generators were connected in series parallel at a frequency of 27.5 Hz. The wind speed entering the power plant inlet was 5.8 m/s, with generator one at a speed of 682 rpm, generator two at 749 rpm, and generator three at 888 rpm, which will then be used to charge the 12 Vdc battery. After a load test using a 12 Vdc 6Watt lamp on the designed axial flux permanent magnet generator, it can be seen that the voltage drop begins to occur at a frequency of 22.5 Hz when the current flow begins to rise. During the no-load test, at a frequency of 22.5 Hz, the measured DC voltage was 9.2 Vdc. Meanwhile, when testing with a 12 Vdc 6Watt lamp load at a frequency of 22.5 Hz, the measured voltage is 5 Vdc. There is a voltage drop of 4.2 Vdc. Furthermore, there is a voltage drop of 2.8 Vdc, 3.8 Vdc, 4.6 Vdc, and 5.2 Vdc at 25 Hz, 27.5 Hz, 30 Hz, and 32.5 Hz. This prototype of an outside AC exhaust wind power plant is expected to be useful for daily needs in the community.]]>
<![CDATA[COMPARATIVE ANALYSIS OF THE EFFICIENCY OF HYBRID AND NON-HYBRID CARS: EFFECT OF WEIGHT, TORQUE AND PRICE ]]>
<![CDATA[Ikwal, Ahmad]]>;
<![CDATA[Ginting, Ph.D, Dianta]]>;
<![CDATA[Witanta, Maulana]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 3 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i3.31388
<![CDATA[Fuel serves as the primary energy source for motor vehicles, enabling them to move. Although it has been the primary energy source for several centuries, Fuel has led to various environmental issues. One of its negative impacts is that, when burned, Fuel produces carbon dioxide (CO2), a significant contributor to global climate change. Currently, this petroleum-based energy is facing a crisis. Hybrid vehicles present a solution to address this petroleum energy crisis. Recently, hybrid cars have become popular in the modern automotive industry due to their numerous advantages, especially fuel efficiency and emissions. Hybrid vehicle technology combines conventional engine technology that uses Fuel with electric motor technology. This study provides a comprehensive comparative analysis between hybrid and non-hybrid cars, focusing on fuel efficiency, vehicle weight, torque, and price parameters. The aim is to assess the economic feasibility of hybrid vehicles compared to non-hybrid cars. The methodology used is a quantitative comparative study of several hybrid and non-hybrid car models within the same class. Performance data were systematically collected from reliable sources and analyzed under standard conditions, covering various price segments ranging from 600 million to 1.6 billion rupiahs. Statistical analysis was conducted to compare fuel efficiency, torque, and vehicle weight between the two types of cars and evaluate the economic implications of these differences. The study results indicate that hybrid cars achieve significantly higher fuel efficiency, averaging 18–22 km/l, compared to 10–14 km/l for non-hybrid models (p < 0.05). This efficiency increase persists despite increasing torque and vehicle weight, demonstrating that hybrid technology improves performance without sacrificing efficiency. Additionally, cost analysis suggests that although the initial price of hybrid cars is higher, fuel savings can offset the price difference in the long term. This research is expected to serve as a reference for consumers considering cost and energy efficiency when choosing hybrid and non-hybrid cars.]]>
<![CDATA[Effect of Coconut Shell Powder and MgO-SiO₂ Composite as Flux on Fume Emission, Strength, Hardness, and Microstructure in SMAW Welds : A review ]]>
<![CDATA[Monica, Zelvia]]>;
<![CDATA[Nurato, Nurato]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 3 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i3.36701
<![CDATA[Shielded Metal Arc Welding (SMAW) is extensively applied across industries due to its simplicity and versatility. However, conventional flux materials commonly used in SMAW produce toxic fumes that pose environmental and health hazards. This review investigates the potential of coconut shell powder, combined with magnesium oxide (MgO) and silicon dioxide (SiO₂), as a sustainable flux alternative. Coconut shell powder, a carbon-rich agricultural waste, has demonstrated effectiveness in reducing fume emissions, while MgO and SiO₂ enhance slag formation, arc stability, and weld metallurgical quality.Replacing conventional flux with up to 30% coconut shell powder has been shown to reduce fume emissions by approximately 40%. The addition of MgO-SiO₂ composites improves weld tensile strength and hardness. Microstructural observations reveal finer grain structures, reduced porosity, and the formation of acicular ferrite, which contributes to increased toughness and crack resistance. This study aims to address gaps in previous research, which often focused on non-welding applications or did not assess key welding characteristics such as fume generation, mechanical properties, and microstructure. By integrating biomass waste and ceramic compounds, the proposed flux formulation offers an eco-friendly and cost-effective alternative for SMAW electrodes.In addition to enhancing weld quality, this approach supports environmental sustainability by utilizing locally abundant, underused natural resources. It also reduces dependence on synthetic flux minerals, making it suitable for widespread use in tropical regions. Further research is recommended to optimize the composition and evaluate performance across various base metals and welding conditions.]]>
<![CDATA[Operation Scheduling for Yarn Production with The Autonomous Distributed Manufacturing Systems (ADiMS) Concept ]]>
<![CDATA[Febriansyah, Muhammad Zulfahmi]]>;
<![CDATA[Setia, Fauzi Aji]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 3 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i3.33405
<![CDATA[The textile industry is one of the Indonesian priority industries for the Industry 4.0 development program. There are a lot of textile industries still in the Industry 2.0 phase. These industries need to adopt Industry 4.0 concepts without automating the production operation to compete with their rivals. The digital twin and Autonomous Distributed Manufacturing Systems (ADiMS) concept were used to implement Industry 4.0 in this case. The objective of this research is to develop an operation scheduling system that can distribute the yarn manufacturing scheduling task to each workstation in a virtual production system using the ADiMS concept. Every actual manufacturing component in ADiMS is simulated in a virtual production system to interact with one another and make decisions; then a process-based product model is developed to capture all the conditions from yarn production in real production systems. Each production element is modeled as an object in Python programming. The simulation is set up to have 31 machines that are ready to be used for production scheduling and 2 types of products. The operation scheduling system with the Autonomous Distributed Manufacturing Systems (ADiMS) concept for yarn production has been created and simulated in a virtual environment and shown the operation schedule that fits the desired criteria.]]>
<![CDATA[EFFECT OF TURNING PARAMETERS AND COOLANT USAGE ON TOOL WEAR IN LATHE PROCESS - REVIEW ]]>
<![CDATA[Mardiah, Enok Mardiah]]>;
<![CDATA[Hidayat, Imam]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 3 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i3.36727
<![CDATA[Turning products must have high quality. The quality of turning results can be affected by tool wear. Turning parameters and the use of coolant are the main factors that can control the level of wear, because they can control the temperature and cutting force during turning. This study aims to examine the effect of turning parameters and coolant use on tool wear in the lathe process. The main parameters analysed include spindle rotation speed, depth of cut, and feed rate. In addition, the role of coolant as a coolant and lubricant is also studied in relation to controlling tool wear. The method used was a literature study. The results showed that all turning parameters have an influence on tool wear, with depth of cut as the most significant factor in increasing wear. High spindle speeds and large feeding motions also accelerate wear due to increased friction and temperature in the cutting zone. This means that the greater the parameter values used, the greater the tool wear. Where with a depth of cut of 0.05 mm causes tool wear of 0.094 mm, while with a depth of cut of 1.5 mm causes tool wear of 0.746 mm. With a spindle rotation speed of 185 rpm the tool wear is 2 mm, while with a spindle rotation speed of 2200 rpm the tool wear is 11.36 µm. With a feed motion of 0.05 mm/rev the tool wear was 0.094 mm, while with a feed motion of 1.5 mm/rev the tool wear was 0.746 mm. The use of coolant proved effective in lowering the cutting temperature, reducing friction, and extending tool life. The results of this study can serve as a practical reference in the selection of cutting parameters and cooling strategies to improve efficiency and tool life in the turning process.]]>
