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
316 Documents
<![CDATA[Design Analysis of a Disabled Tricycle Electric Bike Frame Using Finite Element Analysis (Fea) ]]>
<![CDATA[Pratama, Hidayat]]>;
<![CDATA[Hilmy, Fuad]]>;
<![CDATA[Sulistiyo, Raka Mahendra]]>;
<![CDATA[Salahudin, Xander]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i1.31483
<![CDATA[Mobilization is very important to meet the needs that require someone to move or travel, especially for the disabled. One solution to help the disabled is to design flexible and safe vehicles for them. To find out whether the design is safe or not is by simulation Finite Element Analysis (FEA). This study was conducted to analyze three designs of electric bicycle frames for the disabled made using Solidworks software which is then simulated using Ansys Workbench software which produces output in the form of valuesvon mises stress, deformation, and safety factor. The selection of this design is based on simulation results which show that the von mises stress obtained was 62,669 MPa, its maximum deformation value of 0.32879 mm, and safety factor obtained a value of 6.6221. This simulation uses a load of 80 kg and there is an additional battery at the bottom weighing 10 kg. The simulation results show that design 3 provides the best performance, this is because the design obtains safety factor highest.]]>
<![CDATA[Optimization of Working Temperature and Determination of Dross Recycle Soldering Machine Control Type Based on Specific Energy Consumption ]]>
<![CDATA[Farhan, Ridho Muhamad]]>;
<![CDATA[Wibowo, Ignatius Agung]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i1.18839
<![CDATA[Solder Dross Recycle (SDR) machine role is to extract solder out of solder dross. SDR machine has two parameters which are working temperature and controller type. There are three working temperature references which are 220 °C, 250 °C, dan 298 °C. Controller type of the machine are available for two options which are ON-OFF and PID controller. The aim of this research is to determine working temperature combination and controller type. The SDR machine is tested with variations of working temperature and controller type. Data needed for choosing the best working temperature are extracted solder mass (ESM) and energy consumption (EC). EC is obtained from measurement by digital power meter, while MST is obtained by measuring final solder weight. EC is divided by MST to obtain Specific Energy Consumption (SEC). Data needed for choosing the best controller type is electrical power which is recorded every 10 minutes. Testing period is decided to be 200 minutes. The result of working temperature testing showed that the bigger the working temperature the smaller the KES so that the suitable working temperature in this experiment is 298 °C. The result of controller type testing showed that the smallest SEC was in PID controller with the working temperature of 298 °C which is 0.55 kWh/kg. The SEC value of 0.55 kWh/kg is less as much as 10.9% than the smallest SEC value of ON- OFF controller whose working temperature is 298 °C which is 0.61 kWh/kg. The chosen working temperature based on SEC is 298 °C with SEC of 0.55 kWh/kg out of 220 °C and 250 °C. The chosen controller type is PID controller with SEC of 0.55 kWh/kg with setting of Kp. Ki, and Kd respectively are 9, 250, and 7 out of ON-OFF controller with hysteresis setting of 0.5 °C.]]>
<![CDATA[Review of Improving Refrigeration Machine Performance by Adding Nanoparticles to the Refrigeration System Using Computational Fluid Dynamics (CFD) Simulation and Comparing it with Experimental Results ]]>
<![CDATA[Irwansyah, Dandi]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i1.18371
<![CDATA[In this journal, the author reviews the performance improvement of vapor compression refrigeration machines by adding nanoparticles into the refrigeration system using CFD simulation. This study aims to determine the improvement of refrigeration machine performance by adding nanoparticles into the refrigeration system using CFD simulation and to compare the simulation results with the experimental results. Where the method used in this study is a literature review. The results of the literature study show that the dispersion of nanoparticle additives can affect the increase in the refrigeration system performance coefficient (COP) and can maximize thermal conductivity, heat transfer coefficient, and other heat transfer characteristics so that it can produce lower power consumption. Using the CFD simulation method, the highest increase in refrigeration system performance was obtained through the simulation of SiO2 + R134a nano refrigerants with a volume concentration of 4% and an increase value of 22.58%. From the experimental results, the highest value was obtained by Al2O3 + R134a nano refrigerants with a volume concentration of 0.5% and an increased value of 30.85%. The system's performance showed a significant improvement with the addition of nanoparticles. Therefore, the performance of the refrigeration machine with the addition of nanoparticles in the refrigerant fluid is higher than the system using pure refrigerant fluid (without nanoparticles).]]>
<![CDATA[Exergy Analysis of Power Plants That Utilize Waste Heat from Cement Plants in West Sumatera ]]>
<![CDATA[Heroza, Nadry]]>;
<![CDATA[Pratoto, Adjar]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i1.15307
<![CDATA[Exergy analysis of power plants that utilize exhaust heat at Cemen plant was carried out to identify the reliability of the generator as a whole system or for each component that could be used as a basis for optimizing the utilization of exhaust heat and optimizing the operation of the generator to make it more efficient with increasing usage life. The exergy flow and efficiency are calculated for each component, and the data is then used to calculate how much exergy is destroyed in each component. Calculations are also carried out on the system at the time of commissioning in order to get how much the exergy efficiency has changed since the system was operational. The components of this plant include an SP boiler, AQC boiler, turbine, condenser, condensate pump, Flasher, boiler feed pump, and economist. AQC boiler is the component with the highest exergy value that is destroyed, which is 4405.34 kW or 32.98% of the total exergy destroyed in the system. The condensate pump is the component that has the smallest destroyed exergy value of 18.94 kW (0.14%). The system efficiency in January 2012 was 62.60% and decreased in December 2019 to 53.04%, where the overall system exergy efficiency decreased by 9.56% within 7 years of operation.]]>
<![CDATA[Evaluation of the Effectiveness of Sewage Treatment Plant Performance in GKM Green Tower Building ]]>
<![CDATA[Maha Rendra, Aldera Aji]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i1.18734
<![CDATA[Wastewater or wastewater is the remaining water that is disposed of, originating from households, industries, offices, and other public places. A sewage treatment plant (STP) is a process of reusing wastewater and removing contaminants from wastewater. This study evaluates the Sewage Treatment Plant system in the GKM Green Tower Building. This study aims to analyze the performance of the Sewage Treatment Plant (STP) in the GKM Green Tower building and to determine the effectiveness of the performance of the Sewage Treatment Plant (STP) in the GKM Green Tower building. The parameters used in this study were pH (acidity), COD, BOD, TSS, oil and grease, Total Coliform, and Ammonia, which complies with Domestic Wastewater Quality Standards Based on the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia Number: P.68/ Menlhk-Setjen/2016. Recycled water in the GKM Green Tower building is used to flush closed urinals and water plants. It was found that the results of clean wastewater management in the GKM Green Tower building still look cloudy and smelly. Based on the results of domestic wastewater monitoring tests at GKM Green Tower in August / prior to analysis, several parameters exceeded the quality standards, namely TSS and Total Coliform. The maintenance carried out so far on the Sewage Treatment Plant (STP) system in the GKM Green Tower Building is still not good, which is the cause of the ineffectiveness of the wastewater that has been managed so far. The results of the second test conducted in November showed a decrease in the numbers between the TSS 4 and Total Coliform parameters between 1100. So that they were in accordance with the quality standards set by the government Ministry of Environment.]]>
<![CDATA[Machinability Analysis of SUH 35 Material Subjected to Annealing Process on Engine Valve Making Surface Grinding ]]>
<![CDATA[Arief, Sulaiman]]>;
<![CDATA[Fitri, Muhamad]]>
<![CDATA[ Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jtm.v14i1.14864
<![CDATA[Steel has various physical and mechanical properties. The very high hardness of steel makes it difficult to form or process with a machine. Based on these problems, there needs to be a treatment (treatment) that can improve the mechanical properties of steel. The annealing process is the process of heat treatment of metals or alloys by heating the metal to austenite temperatures, holding it at that temperature for a while, and cooling the metal at a very slow cooling rate. The heat treatment process aims to improve the mechanical properties of the metal or alloy. In this study, SUH 35 steel was used as the test material. Eight test materials are prepared, namely four materials Unannealed and four materials treated with annealing. Annealing specimens are given heat treatment with a temperature of 750 ° C ± 10 ° C with a holding time of 60 minutes. This specimen is carried out by turning process with variable machining feeding that varies 0,25 mm/revolution, 0.50 mm/revolution, 0,75 mm/revolution, and 1 mm/revolution. The results of this study show that the annealed material has a lower roughness value of 311.49 VHN. In comparison, the Unannealed sample has a hardness value of 607.59 VHN, which shows better machinability in the annealed material. The results of the feeding variation show that the greater the feeding value, the more it will affect the increase in the roughness, resulting in the surface grinding process.]]>
<![CDATA[Thermal and Flame Retardant Performance of Glass Fiber-Reinforced UPR Composites Modified with Boric Acid and Sodium Silicate ]]>
<![CDATA[Kristiawan, Ruben Bayu]]>;
<![CDATA[Pramudi, Ganjar]]>;
<![CDATA[Roni, Komar]]>
<![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.v14i2.33580
<![CDATA[This study investigates the effect of sodium silicate (Na₂SiO₃) and boric acid (BA) as flame-retardant additives in unsaturated polyester resin (UPR) reinforced with E-glass fibres. The fire performance of the composites was evaluated based on varying additive concentrations by % volume fraction, using standardised testing methods in burning rate (BR) with ASTM D 635-22. Results indicate that Na₂SiO₃ contributes to fire resistance by forming a thermally stable, glass-like barrier, while BA proves more effective by interrupting combustion reactions and generating protective boron oxide residue. Notably, the combination of Na₂SiO₃ and BA produced a synergistic effect, resulting in a significant reduction in burning rate. Thermogravimetric analysis (TGA) further confirmed the enhanced thermal stability of the composite, particularly in the NB10 formulation with 2% Na₂SiO₃ and 8% BA, which demonstrated the slowest degradation at elevated temperatures. These findings suggest that optimising the ratio of Na₂SiO₃ and BA yields high-performance, fire-retardant composites suitable for applications demanding superior fire resistance and thermal durability, such as electric vehicle safety components.]]>
<![CDATA[ANALYSIS OF WATER INGRESS OF COMPOSITE SANDWICH STRUCTURE ON CABIN FLOOR OF AIRBUS A330 AIRCRAFT USING ANSYS ]]>
<![CDATA[Hermawan, Agus]]>;
<![CDATA[Fitri, Muhamad]]>
<![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.v14i2.32006
<![CDATA[Abstract - The rapid advancement of aviation technology necessitates rigorous structural evaluations to ensure safety and efficiency. This study focuses on analyzing water ingress in sandwich composite structures used in the cabin floor of the Airbus A330, employing Non-Destructive Testing (NDT) and simulation methods. Using thermography, areas with water ingress were identified, with darker regions indicating trapped moisture within the composite layers. Two cases were analyzed: one with areas requiring repair and another within acceptable damage limits as per the Structure Repair Manual (SRM). The study simulated the effects of pressure and temperature using ANSYS. Results revealed minimal pressure differences, with values ranging between 0 and 0.80 atm. Temperature simulations showed a range of 21°C to 24°C, suggesting potential condensation that could lead to water ingress. Structural simulations evaluated the composite's deformation, elastic strain, and stress distribution. The maximum deformation was 5.1138 mm, with elastic strain peaking at 0.0033772 mm/mm and stress von Mises reaching 591.74 MPa, well within the material's safety threshold. This research highlights the importance of periodic inspections and advanced simulation techniques in maintaining composite structures. Recommendations include utilizing additional NDT methods, such as ultrasonic testing, to enhance detection accuracy and investigating actual cabin conditions to refine future analyses.]]>
<![CDATA[Analysis of The Effect of Temperature Variations and Natural Gas Flow on Zinc Oxide (Zno) Quality Results Using The French Method ]]>
<![CDATA[Suyadi, Yadi]]>;
<![CDATA[Alva, Sagir]]>
<![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.v14i2.31993
<![CDATA[This study aims to analyze the effect of temperature and gas flow variations on the quality of Zinc Oxide (ZnO) produced in terms of particle size and product purity using the French method. The French method is a standard production technique used to manufacture ZnO, which utilizes the oxidation of zinc metal at high temperatures. The problem in the ZnO manufacturing process is determining what natural gas temperature and flow will be used to obtain the best quality, considering fuel consumption and production efficiency. In this study, temperature variations of 900°C, 1000°C, and 1100°C and natural gas flow using CNG (Compressed Natural Gas) with variations of 50 m3/hour, 55m3/hour, 60m3/hour were applied to understand how these parameters affect the properties of the resulting ZnO, characterization of the results was carried out using the complexometric titration method with ethylenediaminetetraacetic acid (EDTA) solution to determine the purity of the resulting ZnO and using a laser diffraction instrument to examine the size of ZnO particles. The results showed that the process temperature significantly affected the purity of ZnO. At a temperature of 1100 °C, the purity of ZnO reached 99.94%, which is the testing value in this study. At a gas flow of 60 m3/h, the purity of ZnO tends to be stable at a value of 99.93–99.94%. Meanwhile, the results of particle measurements at a temperature of 900°C with a gas flow of 50 m3/h, D50 reached 1.235 µm. At a temperature of 1100°C with a gas flow of 60 m3/h, D50 decreased to 1.089 µm. This particle size indicates that high temperatures encourage agglomeration reduction, resulting in finer ZnO particles. This study concludes that temperature and gas flow parameters play an important role in controlling the quality of ZnO produced through the method, with oxygen gas flow at high temperatures giving optimal results.]]>
<![CDATA[Finite Element Analysis and Optimization of Medium Bus Frame Structure ]]>
<![CDATA[Kurniadi, Ninda]]>;
<![CDATA[Priyanto, Kaleb]]>;
<![CDATA[Gojandra, Farda Pega Libra]]>
<![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.v14i2.33587
<![CDATA[Bus is a very important transportation for all people in the world. The majority of a bus that operates still uses non-renewable fuel. The conventional bus produces exhaust emissions that can damage the environment. Current research is about changing the conventional internal combustion engine bus into an electric bus, therefore it is necessary to test the strength of the frame structure to determine its strength after changing with the electric system. The objective of this current study is to analyze the bending strength and optimization of a medium electric bus frame structure using the Finite Element Method in static conditions. Optimization will be conducted after obtaining results of bending analysis to determine the minimum weight of the bus frame structure without violating bending strength. The results of the bending analysis are stress and displacement which will be used as a constraint in the optimization process. The optimization that will be used is size optimization. The design variable is the thickness of each bus frame structure. Results show that the weight of the structure is reduced by 12% without compromising on strength and safety requirements.]]>
