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INDONESIA
INTERNATIONAL JOURNAL OF MECHANICAL COMPUTATIONAL AND MANUFACTURING RESEARCH
Published by Trigin Publisher
ISSN : 23014148     EISSN : 29623391     DOI : 10.35335/MECOMARE
Core Subject : Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Mechanical Engineering
International Journal of Mechanical Computational And Manufacturing Research invites you to consider submitting original research papers for possible publication after peer review. The scope of this international, scholarly journal is aimed at rapid dissemination of new ideas and techniques and to provide a common forum for significant research and new developments in areas of Mechanical Computational And Manufacturing Research.
Arjuna Subject : Teknik (semua kategori) - Komputasi Mekanik
Articles 95 Documents
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Analysis of the Evaporator Components of the Adsorption Cooling Machine Using 3D Simulation Anthony Tannady
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 2 (2021): August: Mechanical Computational And Manufacturing Research
Publisher : Trigin Publisher

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Abstract

Solar Energy is the biggest energy on the earth, solar enegy in Indonesia can be utilized for variety of things. Based on solar radiation data collected from 18 locations in Indonesia, solar radiation for West Indonesia area has reached 4,5 kWh/m2/day with monthly variation about 10%, while East Indonesia area has reached about 5,1 kWh/m2 /day with monthly variation about 9%. Therefore, the solar energy can be utilized as the main source of energy for the adsorption refrigeration cycle cooling machine to produce cooling effect. The simulation object of this research is evaporator, which simulated with Ansys 15.0 and modeled with 3D CAD software. Evaporator is filled with 5 litres of methanol, and 6 liters of chilled water. This simulation simulated 30 minutes of desorption which start from 5.30 p.m to 6.00 p.m GMT+7 actual research time. The lowest chilled water temperature get from this simulation is about 19,79 ℃ at 12665 Pa pressure, and have an error presentage about 7,21% compared with the actual experiment. Theoretical efficiency of the evaporator is about 57,292% and have an error presentage about 5,21% compared with the actual experiment. Coefficient of Preformance from this cycle is 0,039.
Performance Analysis of Three Channel Single Pass Heat Exchanger With Flow Divided In Counterclockwise and Unidirectional Flow Configurations M. Yoki Al Mahir
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 2 (2021): August: Mechanical Computational And Manufacturing Research
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Abstract

The triple concentric pipes heat exchanger is an improved or the repair version of double pipe heat exchanger. The research of triple concentric pipe heat exchanger have enough developed, especially by C.L.Ko dan G.L. Wedekind who have given theoretically and experimentally analysis. This research was conducted to determine the output of temperature of each channel and find out perfomance heat exchanger effectiveness is based on experimentally and theoretically. In this essay, the development is doing with a broader scope of research C.L. Ko and G.L. Wedekind, the experiment have done with C1/Cs ≤ 1 and C1/Cs ≥ 1 in both counter flow and paralel flow configuration aheat exchan ger used according to the size used C.L. Ko and G.L. Wedekind. The result experiment that average effectiveness is ± 60% with the higgest effectiveness is ± 80.4 % in counter flow configuration and the average effectiveness is ± 43.4% with the higgest effectiveness is ± 55.1 % in paralel flow configuration. Theoretically predicted heat exchanger effectiveness are found on the average different of the experiment ± 9,06% in counter flow configuration and 5,67% in paralel flow configuration. The experiment also show different result of optimum point that predicted by C.L.Ko dan G.L. Wedekind.
Design and Build of Animal Feed Dryer Machine Heat Pump System with 1 Pk. Power Iko Mart Nadeak
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 1 (2021): May: Mechanical Computational And Manufacturing Research
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Abstract

The need for animal feed in Indonesia is very high considering that there are so many livestock commodities in Indonesia. The number of farms greatly affects the need for feed that will be ready to be eaten by livestock, while the animal feed produced by the industry is still wet or moist. The planned data will be collected and further analyzed in this study include the following: ) Animal Feed Mass (M). The mass of the feed was measured when it was wet (Mb) and when it was dry (Mk). (2) Drying time (t). The drying time needed to dry the feed is from wet to dry (wet weight to dry weight). At what time of the fall. (3) Temperature (T). Based on data analysis and discussion, the following conclusions can be drawn: 1. The compressor used in this heat pump system clothes dryer is a Rotary Vane Compressor or sliding blade compressor. With engine specifications: - Condenser Working Pressure (PK ) 3.1 Mpa - Evaporator Working Pressure (Pe ) 0.62 Mpa -Compressor Power (Wc ) 1 Hp 746 Watt - Condenser Temperature (Tk) 72.125 0C - Evaporator Temperature (Te) 7 0C The performance of the refrigeration cycle is 2.90. A high coefficient of performance is desirable because it indicates that a certain amount of refrigeration work requires only a small amount of work and the drying process. From thermodynamic calculations based on engine specifications, the power of the electric motor driving the compressor is 1.03 kW with a compression efficiency of 0.99.
Thermal Comparative Analysis Before and After Improvements to the Daihatsu Taft Hiline Transmission Experimentally Nixon Randy
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 1 (2021): May: Mechanical Computational And Manufacturing Research
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Abstract

The gearbox or transmission functions as a power transfer system which transfers and converts power from a rotating motor. In an ideal concept the mechanical energy generated by the transmission will be completely converted into mechanical energy, but in fact there is energy lost into heat energy even though the value is small by 5-10%. According to previous research using software to simulate work rather than transmission, it was found that the greatest heat energy is generated by friction between gears which will be transmitted through fluid flow (lubricant). The method used is by comparing the temperature of the vehicle's transmission before repair (overhaul) with the temperature of the vehicle's transmission after repair (overhaul) and change of lubrication. Temperature data retrieval at 2 different points of the gearbox was carried out using a type K thermocouple with a temperature range of -5oC to 1300oC accompanied by a hygrometer to measure the temperature and humidity of the environment during the testing process which acted as independent variables. Based on the experimental data taken before the repair was carried out, it was found that there were irregularities in the first experiment before the overhaul on the Neutral transmission (N) at speeds of 0, 600 and 1000 rpm, there was a significant increase in temperature at T1 (50-59- 62)oC and at T2 (44-49-58)oC. Furthermore, it was carried out seven times to obtain data variations and the allegations or hypotheses of damage that occurred in the transmission were made according to the results of graphical data analysis
Analysis of Dynamic Vibration Characteristics in Daihatsu Taft Hiline Gtl Transmission with Fea Harris Kristanto
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 1 (2021): May: Mechanical Computational And Manufacturing Research
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Abstract

Transmission is function to move and to change the power from motor, which is used to turn machine spindle as well as to do feeding movement. The vibration level which occurred in transmission is very important so that a failure does not occur. The purpose of this research is to know vibration phenomenon and vibration mode which occurred to transmission. Material and boundary condition which is used influenced natural frequency and occurred vibration mode. Method which will be used in this vibration analysis is by using modal analysis based on FEA. Software is used in building the CAD shape and FEA process. Numeric model characterized stiffness structure matrix is built to investigate transmission vibration. The results obtained in this research is the natural frequency of neutral gear (1,109.1–1,780.2) Hz, 1st gear (1,173.2–1,795.6) Hz, 2nd gear (1,107.8-1,804.4) Hz, 3th gear (1,206.2–1,805.3) Hz, 4th gear (1,156.3 to 1,804.5) Hz, 5th gear (1,099.3–1,738) Hz, and reverse gear (1,171.6–1,870) Hz. In this research resulted that the smallest natural frequency occurred at the first mode 5th gear is 1,099.3 Hz, While the biggest natural frequency occurred at the eighth mode reverse gear is 1,870 Hz. This matter because contact relation which occured at 5th gear is minim so that the mass of the gear is lighter, while at the reverse gear thas three related wheel gears so that the masses are heavier and produce natural frequencies greater.
Experimental Test of Single Cylinder Otto Engine Performance on Dynotest Chassis Using Premium Fuel Types, Pertalite and Pertamax Agung Mulia Pulungan
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 1 (2021): May: Mechanical Computational And Manufacturing Research
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Abstract

Public vehicles such as motorcycles today could use some types of fuel selection from PT. Pertamina for premium gasoline engines among other things, pertalite and pertamax. Each type of fuel has an octane number of different. Engine performance is heavily influenced by several factors, including the type of fuel used and the pistons (large and small combustion chamber volume). The purpose of this study was to determine the effect of different octane number of gasoline on the performance of torque, power, and then analyze the specific fuel consumption, brake thermal efficiency and exhaust emissions at otto engine. The results of the experimental test engine performance otto one cylinder indicates a maximum torque of 40 Nm at engine speed 1410 rpm when using gasoline pertamax, followed torque of 38 Nm at engine speed 1221 rpm when using gasoline pertalite and torque of 29 Nm at rpm 1877 when using premium gasoline. While the maximum power when using gasoline pertamax of 13,870 kW at 4409 rpm, followed pertalite 12,602 kW at 4041 rpm rotation, and premium gasoline amounted to 12,229 kW at 4688 rpm rotation. For specific fuel consumption is minimal (economical) when using gasoline pertamax amounted to 0.171 kg/kW.h at 4409 rpm, followed by gasoline pertalite of 0.229 kg/kW.h at 4041 rpm, then premium gasoline amounted to 0.273 kg/kW. h on 4688 rpm. Brake thermal efficiency (BTE) is achieved when the maximum engine using gasoline pertamax amounted to 48.124% at engine speed 4409 rpm, followed by the gasoline engine BTE pertalite 36.659% at 4041 rpm and the engine BTE premium gasoline amounted to 31.673% at 4688 rpm.
Analysis of Fluidity and Flow Characteristics of A356 Aluminum in Sand Casting Using Numerical Simulation Method Andri Willy Adianta
International Journal of Mechanical Computational and Manufacturing Research Vol. 10 No. 1 (2021): May: Mechanical Computational And Manufacturing Research
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Abstract

Aluminum silicon alloy is an aluminum alloy that is widely used in engineering. This alloy has good strength and is widely produced into components through the casting process. Silicon content can lead to a decrease in the fluidity of aluminum castings which in turn will reduce the quality of castings, this fluidity is also influenced by the temperature at which molten aluminum is poured. This study aims to determine the effect of pouring temperature on fluidity, flow characteristics and casting defects in aluminum silicon alloy casting using sand molds. Casting is done by gravity casting, simulation flow analysis includes the distribution of flow velocity, temperature, pressure, surface defects and fluidity that occur during the process of filling the mold cavity and the comparison of the fluidity of castings and surface defects in the experimental. Pouring temperatures of 685, 710, 735, 760 and 785°C with 1, 3, 5, 7, 9, and 12 mm pattern mold thicknesses. The simulation process uses computational fluid dynamic based software. The results obtained that the pouring temperature of 785oC has the highest flow velocity of ±0.145 m/s in a 12mm cavity and a high temperature distribution of ±759oC in a 3mm cavity, while the pouring temperature of 685oC has a high pressure distribution of ±107287 Pa in the cavity. 6mm. Surface defects that occur at least at a temperature of 685oC. The best casting fluidity is at a temperature of 785oC where the cavities of 12, 9, 7, 5 and 3 mm are fully filled and 1mm reaches 181.4 mm.
Analysis of Smaw Welding Results on AISI 304 Stainless Steel with Variations in Current and Electrode Diameter Esta Karina Tarigan
International Journal of Mechanical Computational and Manufacturing Research Vol. 9 No. 4 (2021): February: Mechanical Computational And Manufacturing Research
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Abstract

Construction using metal at the present time involves many elements, especially the field of welding engineering for welded joints is one of making connections that technically requires a high skill for welding, in order to obtain a connection with good quality. This study aims to determine the effect of variations in flow and the electrode on the distribution of hardness and microstructure in welding Stainless Steel AISI 304 seam type used is a double hem V with an angle 45. In this study used current and electrode diameter different, current used is 85 A, 95 A, 105 A, 115 A and the diameter of the electrode used is 2.6 mm and 3.2 mm, the type of weld used is Shielded Metal Arc welding (SMAW). Tests used in the form of micro hardness testing and photo. Based on the research results obtained hardness values ​​were highest at 3. 2 mm electrodes with a current 85 A (85.86 HRB). It should be used in these premises welding electrode diameter of 3.2 mm and a flow of 85 A, because it has the highest hardness value than when using an electrode diameter of 2.6 mm. For testing photo that the greater the flow and diameter are used in welding will be more and more also the occurrence of porosity.
Analysis of Industrial Engineering Brand Awareness Improvement Using SWOT and Quantitative Strategic Planning Matrix (QSPM) Muhammad Raodhany
International Journal of Mechanical Computational and Manufacturing Research Vol. 9 No. 4 (2021): February: Mechanical Computational And Manufacturing Research
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Abstract

There are many universities in Indonesia that have Industrial Engineering Departments, until 2015 the Industrial Engineering Study Program was registered in 187 universities. There were only 6 out of 100 respondents who wanted to enter the Industrial Engineering Department, University X, and as many as 54% did not understand the major– majors in the Faculty of Engineering, University X, based on the questionnaire distributed. In this study, the SWOT and QSPM strategies were carried out in order to be able to analyze how to increase the level of brand awareness in Industrial Engineering University X. The distribution of the first questionnaire was used to find out where the brand awareness was in the Industrial Engineering Department, University X with high school students as respondents. The second questionnaire was distributed to find out whether the internal or external factors contained in the Department of Industrial Engineering, University X were strengths or weaknesses. With the presence of internal and external factors, the SWOT strategy can be implemented. The SO strategy is the right thing to do by the Department of Industrial Engineering, University X based on a SWOT analysis. These strategies include: 1) socializing the achievement of JTI UX that has been accredited A and an average GPA of above 3 to prospective students. 2) increase the number of lecturers who are involved in Joint Research on S2 and S3 lecturers. 3) increase accreditation to international level. 4) increase the number of cooperation with international industry. 5) increase and expand cooperation in the fields of education, research, and community service with external parties both at the national and international levels. 6) make Industrial Engineering graduates who are in national or international industries to help fill guest lectures at the Department of Industrial Engineering, University X. Based on the analysis of the QSPM method, a highly recommended strategy is to increase accreditation to an international level.
Solar Cell Based Automatic Garden Watering Control System Achmad Effendi
International Journal of Mechanical Computational and Manufacturing Research Vol. 9 No. 4 (2021): February: Mechanical Computational And Manufacturing Research
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Abstract

Watering Gardens Using Solar Cells. Supervised by Zahir Zainuddin and Adriani. Solar cell is a device composed of semiconductor material that can convert sunlight into electric power directly. Often also used the term photovoltaic or photovoltaic. In this design, automatic garden watering using a solar cell requires timer equipment, BCU, rain sensor, relay, battery/battery and inverter. The purpose of this design is to determine the performance of the plant watering design using a solar cell as a voltage source and to determine the rain sensor and control system in watering plants optimally, so that later it can be applied to further designs and the community. The results of the garden watering test using a solar cell without a load on December 31, 2017 produced a voltage of up to 18 volts with a current of 1.5 amperes and on December 14, 2017 it produced a voltage of up to 17.5 volts with a current of 1.4 amperes. Meanwhile, when given a load, the voltage released by the battery is 11.5 V and produces a current of 5.73 A and the voltage issued by the inverter is 214 V and produces a current of 1.05 A. issued by the battery is 11.80 V with a current of 7.80 A and the voltage issued by the inverter is 221 V and the current issued is 0.81A. 5 volts with a current of 1.4 amperes. Meanwhile, when given a load, the voltage released by the battery is 11.5 V and produces a current of 5.73 A and the voltage issued by the inverter is 214 V and produces a current of 1.05 A. issued by the battery is 11.80 V with a current of 7.80 A and the voltage issued by the inverter is 221 V and the current issued is 0.81A. 5 volts with a current of 1.4 amperes. Meanwhile, when given a load, the voltage released by the battery is 11.5 V and produces a current of 5.73 A and the voltage issued by the inverter is 214 V and produces a current of 1.05 A. issued by the battery is 11.80 V with a current of 7.80 A and the voltage issued by the inverter is 221 V and the current issued is 0.81A.

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