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SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin
Published by Universitas Muhammadiyah Jakarta
ISSN : 20889038     EISSN : 25499645     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin is an open access, peer-review journal which publishes original and review articles that advance the understanding of both the fundamentals of engineering science and its application to the solution of challenges and problems in mechanical engineering systems, machines and components. The editorial team aims to publish high quality and highly applied research and innovation that has the potential to be widely disseminated, taking into consideration the potential mechanical engineering that it could generate.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 269 Documents
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Mesin ayak dua saluran dilengkapi pengarah untuk beras jagung Yohanes Benediktus Yokasing; Amiruddin Abdullah; Stanislaus Tamelab
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.112-122

Abstract

Sieve machine is used to separate groups of granules based on size. Most separation sieves on 2 groups of sifted/filtered grains move immediately, but the unfiltered grains are removed by the operator turning the sieve sideways or lifting the unfiltered material. In addition, the sifted material is usually poured directly on the sieve wire. This slows down the sifting process and the buildup can damage the sieve. On the other hand, sieve materials such as corn rice products, require 2 sizes of sieve wire holes. For that, do the design, made and studied the function, "The Sieve Machine’s two channel Equipped with Directions for Rice Corn". The specifications of the sieve machine as follows; has 2 sifting channels, the sieve filter can be replaced, the filter is driven by a swing arm, dynamo drive 3/4 hp, rotation 1400 rpm, the capacity for one stage is ± 44.8 kg/hour, the capacity for corn rice ± 22 kg/hour (it's time to change the sieve). The study of engine performance on several variables resulted in the smaller the angle of lightening the capacity increases, it is inversely proportional to the length of the spring and rotation. At angle 50 sieve capacity is 23.3 kg/hour, with length of the spring is 90.5 mm, and on length of spring becomes 100.5 mm, sieva capacity of 24.6 kg/hour. For angle 150, the capacity is reduced by 20.4 kg/hour. At rotation 230 rpm, 50 angle, decreased capacity, only 20.3 kg/hour, spring length 90.5 mm.
Optimization of compressor work, power and heat on efficiency refrigerant r290 on split ac Samsudi Raharjo; RM Bagus Irawan; M. Edi Pujianto
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.77-81

Abstract

The vapor compression cycle refrigeration machine is the type of refrigeration machine that is most widely used today, generally the medium used as a working fluid that transfers heat from the product being cooled to its environment is a synthetic refrigerant. The working fluid is called refrigerant. Refrigerant is the main working fluid used in air conditioning systems to absorb heat and convert it in the refrigeration system. This then encourages countries in the world including Indonesia to then jointly carry out prevention and improvement by making agreements. Then this agreement was known as the Vienna Convention in 1985 followed by the Montreal agreement in 1987. In order to reduce the impact of ODS (Ozone Depleting Substances), in 1992 Indonesia signed the Montreal protocol. At that time, Indonesia also launched the "Indonesian Country for the phase Out of Ozone Depleting Substances (ODS) under the Montreal Protocol". This study aims to compare the work of compression, heat absorbed, and the electric power used by the split type refrigeration machine between refrigerant R-22 and refrigerant R-290. These results and analysis show that R-290 has a higher value than R-22 in compression performance. R22 power consumption is 0.30 kw and R290 is 0.26. R290 this is influenced by the light work of the compressor so that it will have an impact on electric power consumption. The power consumption of R290 is 42% less than R22. The heat absorbed by R 22 is smaller than that using hydrocarbons. The results of the optimization of compressor work, power and heat variables show an effect on efficiency.
Observation of macro surface and gear mass of 3d printing machine using pla filament Mochamad Edoward Ramadhan; Aris Zainul Muttaqin; M. Trifiananto
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.123-130

Abstract

3D Printing Machine is a machine that works with the basic principle of CNC, namely the movement of the machine in making the workpiece which is regulated by the G code in 3 coordinate axes x, y, and z. Based on how it works, 3d printing machines are classified into 7, namely, Vat photopolymerization, Material Extrusion, Powder-Bed Fusion, Sheet Lamination, Binder Jetting, Material Jetting, Directed Energy Deposition. The results of the research on 3d Printing Material extrusion this time using PLA material with a machining diameter of 1.75mm, nozzle distance with bed 0.1mm, nozzle diameter 0.4mm, layer height 0.12mm, nozzle temperature 2000C, bed temperature 600C, printing speed 80mm/s. The experimental results found problems such as clogging, the filament does not stick to the bed, the filament has a different freezing point, thus affecting the geometry of the workpiece to be printed. For the mass of all printed workpieces after measuring the mass with no significant changes, it is ensured that the problem originates from variables related to the printing of each layer in the form of printing speed, bed temperature, nozzle temperature, and system temperature.
Analisis briket fiber mesocarp kelapa sawit metode karbonisasi dengan perekat tepung tapioka Istianto Budhi Rahardja; Cenda E Hasibuan; Yudi Dermawan
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.82-91

Abstract

This research aims to develop solid waste produced by oil palm plantation processing in the form of palm oil mesocarp fiber. Utilization which is usually only as boiler fuel in a Palm Oil Mill. Utilization of mesocarp fiber waste is to reduce waste, has a large heating value, and has a selling value. In the process of making mesocarp fiber briquettes, raw materials are provided, drying, charcoal (carbonization), filtering, forming 100 gr of charcoal with 150 ml, 200 ml, 300 ml of water solvent with tapioca starch adhesive (50 gr), and drying. The results of this research were briquettes with 150 ml solvent with a water content of 7.6%, an ash content of 22.52%, a burning time of 143 minutes, a burn rate of 0.21 %. The 200 ml solvent, namely: water content of 5.7%, ash content of 11.28%, burning time of 77 minutes, burning rate of 0.38 %. And in the 300 ml solvent, namely: water content of 5.2%, ash content of 16.84%, burning time of 67 minutes, burning rate of 0.36 %.
Unjuk kerja catalytic converter katalis tembaga krom terhadap penurunan temperatur emisi bas buang motor bensin RM Bagus Irawan; Edi Pujianto; Muh Faishal Khairi
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.131-136

Abstract

Catalytic Converter is a technology used to reduce air pollution which is installed in the exhaust gas (muffler) of gasoline motorized vehicles. This Catalytic Converter serves to accelerate the oxidation of Hydrocarbon (HC) and Carbon Monoxide (CO) gas emissions, as well as to reduce Nitrogen Oxide (NOx). Changes in exhaust emissions mentioned above are strongly influenced by the working temperature of the Catalytic Converter. Chrome Copper metal material as a catalyst material, will be investigated and tested on a laboratory scale, first to see the effect of changes in engine speed to temperature, secondly changes in temperature when using a Catalytic Converter with a Copper catalyst and thirdly changes in temperature when using a Chrome Copper Catalyst in the exhaust gas channel . The results of the study were first obtained that changes in engine speed affect the increase in temperature of the Catalytic Converter, the higher the engine speed the temperature rises and vice versa at low engine speed the temperature tends to decrease. The two installations of the Catalytic Converter caused the temperature to drop, at 3000 rpm engine speed (without the Catalytic Converter) the temperature was 317.5 ºC and fell to 227.36 ºC in 5 catalyst cells, 218 ºC in 10 cells and 230 ºC in 15 cells. (with Cu Catalytic Converter). Whereas in the installation of a Chrome Copper Catalytic Converter, at 3000 rpm engine speed (without Catalytic Converter) the temperatur of 317.5 ºC drops to 237.5 ºC in 5 catalyst cells, 240.84 ºC in 10 cells and 249 ºC in 15 cells, where the decrease in temperatur that occurs is higher with the use of a copper catalyst.
Perancangan dan analisis kekuatan statis pada fixed-portable hydraulic scissor car lift platform dengan kapasitas 2 ton Igor Vinicius De Souza Lima; J Victor Tuapetel; Achmad Zaki Rahman
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.92-103

Abstract

The large number of vehicles (cars) currently available causes an increase in demand for vehicle services and maintenance. Required availability of equipment that results in effectiveness and efficiency in its maintenance. The scissor lift model was chosen because it is portable and does not require much space for use in workshops. The design of a lifting device that uses a scissor lifting type hydraulic system that can be used fixed-portable for MPV type vehicles or vehicles weighing under 2 tons was carried out. The designed platform is then calculated and analyzed for its structural strength using FUSION 360 and FTOOL software. The calculation results show that the total stress  is less than the permissible stress , then the material meets the strength requirements () and is declared safe. From the FEA Stress Von Mises simulation results, the total stress on the structure is smaller than the material stress. Due to the calculation using = 1.5 and the safety factor from the simulation results is greater than the safety factor used in the design, the design meets the strength requirements and is declared safe.
Optimization analysis of production capacity on trimming process for passenger vehicle with a learning curve approach (case study: car os) Franka Hendra; Riki Effendi
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.137-142

Abstract

The primary goal of this research to optimizing the production process capacity is expected to answer basic problems of how steps taken by the manufacturing industry to produce effective output. This study used a technique Research Design case study, namely in the automotive manufacturing industry in the process of assembling a car OS in the Trimming Process PT. XYZ. This study refers to the technique of quantitative research methods of data collection by interview and sampling cycle time by using stopwach. There are 5 models used in this research is, a) Learning Curve Approach, b) Time study c) The model of productivity to measure productivity Actual and after the application of the standard time Productivity Model, d) Efficiency and Efectivity Model. Results of this study found a) Learning Curve Effect on the curve for each station, the end effect of learning curve for operators learning process average in the assembly process units to 11 – 16 with learning rate between 88% - 94% for each stations, b) Standard time for assembly process OS is 215.17 minutes/units with the effective capacity 5.18 units / hour, c) Estimate the productivity level obtained when applying the standard time is 5.18 higher than the actual productivity is 2.45, d) the level of efficiency that can be achieved in the application of standard time is 4.7%, e) Identification of factors that affect the speed of the operator skill then found five factors that according to the operator (the respondents) that affect their work, the machine does not automatically chosen 95% of respondents, many elements of the work carried out by manual as much as 85% and 80% respectively of respondents choose the layout, engine support and salaries / wages are still not standard than other same industry.
Assembly of a 9 ton cold storage facility at Masian Grup and Ping Loka Building Sleman Regency Yogyakarta Hermawan, Ade; Syarifudin, Achmad; Sukismo, Hendro; Basino, Basino; Dewi, Priyantini; Extrada, Feby Riyan
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 1 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.1.57-62

Abstract

This study examines the assembly process of cold storage for frozen food business with a capacity of 9 tons. The aim of this research is to design and assemble a cold storage with dimensions of 5 m in length, 2.7 m in width, and 2.7 m in height, capable of storing frozen food products at a temperature of -18°C. The components used for the cold storage machine include a semi-hermetic Bitzer compressor, a fin and tube HD type condenser, and a wongso evaporator. The total cost for purchasing materials and assembly services for the cold storage amounts to Rp 164,776,980, including an 11% value-added tax (VAT).
Design of a single screw extruder machine for 3d printing filament production application Maulana, Achmad Bagas; Widodo, Edi; Fahruddin, Arasy; Yulianto, Sulis
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 1 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.1.24-30

Abstract

This study aims to determine the optimal 3D Printer filament extruder machine design, to determine the design of the extruder components for filament production, to determine the single screw design used for filament production. The research method used is creating flow chart, the result of the research is the calculation of the diameter of the 3D Printer filament of 1.77 mm, by measuring the diameter of the filament by taking a 2 meters long sample to be measured every 10 cm. the most influential components in this research are diameter, length of single screw extruder, length of filament winding process, production capacity and total electric power. With a screw speed of 5 RPM, 1.5 kg of ready-to-use 3D printer filament is produced within 1 hour of production. So there, is an error between the calculation and the real condition of 15%.
Increasing the performance of diesel motors by increasing the temperature of the diesel Taruna, Taruna; Marwiyah NST, Masringgit
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 1 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.1.63-70

Abstract

This research aims to enhance the efficiency of diesel engines by optimizing the combustion process. One of the key factors in engine efficiency is the quality of the fuel-air mixture inside the combustion chamber. Imperfect combustion leads to high fuel consumption and low engine performance. Therefore, this study employs an experimental research method to investigate the influence of preheating the diesel fuel before entering the high-pressure pump on the formation of finer fuel mist particles and a more homogenous fuel-air mixing process. A series of experiments were conducted in this research by varying the temperature of the preheated diesel fuel and measuring relevant parameters related to combustion and engine performance. The results of this study demonstrate that preheating the diesel fuel before it enters the high-pressure pump leads to an improvement in the quality of the fuel-air mixture and enhances combustion efficiency. As a consequence, there is an increase in engine power and a reduction in optimal fuel consumption. In conclusion, the use of preheated diesel fuel to enhance the combustion process can be an effective solution to optimize the performance of diesel engines and reduce fuel consumption. This research contributes significantly to finding alternatives to address the issue of high fuel consumption in diesel engine-based vehicles.

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