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Evrimata: Journal of Mechanical Engineering
Published by PT. ELSHAD TECHNOLOGY INDONESIA
ISSN : -     EISSN : 30476305     DOI : https://doi.org/10.70822/evrmata.vi
Core Subject : Science, Engineering,
Automotive Engineering Materials Science & Nanotechnology Mechanical Engineering
Evrimata: Journal of Mechanical Engineering The interdisciplinary research edition covering scientific areas: - Mechanical Engineering - Otomotive Engineering - Material Engineering Taking into account the interdisciplinary character of the journal, the authors in its materials should emphasize field of application of their research, always emphasizing the importance of the subject for the research community in related fields of knowledge. For example: - If the article deals with the new inorganic materials then should be pointed as such materials may be used by specialists in the field of energy, electronics, etc., or how understanding the mechanism of the processes can be taken into account in the synthesis of other new materials. - If the article is about new methods of mathematical modeling, it should specify what restrictions may apply specifics of field of application to the proposed original method (accounting of external factors, the initial or boundary conditions, internal factors that can not be an accurate accounting and so on). Therefore, when submitting the articles in this section, are welcome articles, co-authors of which are experts in different fields of knowledge.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 36 Documents
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Simulation of Heat Transfer Rate in Motorcycle Engine Cylinder with Variation of Distance Between Fins and Material Zainal, Mohamad Zainal Abidin; Sugeng Hadi Susilo
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.12

Abstract

Cylinder blocks on motorcycles that do not use a radiator cooling mechanism generally use a fin mechanism around the motorcycle cylinder block. Fins on motorcycles are useful for spreading the heat from combustion from the inside out, so that the engine temperature does not heat up quickly. During the combustion process in the cylinder block can cause heat with a high temperature. If this heat is not immediately distributed around it will cause excessive heat and will cause over heating on the motorcycle, which can interfere with the performance of the motorcycle. Thermal analysis is often used to study heat transfer on many surfaces including fins, cylinder block of an internal combustion engine and also the material of the mold block. The engine cylinder with fins was designed using Autodesk Fusion 360 with different spacing between fins of 10 mm, 8 mm, 6 mm and 4 mm. The materials used for modeling in this study are Al 356 (cast alloy), AA 2014T6 (Wrought alloy), AA 1060 (Wrought alloy), cast iron with 2% nickel, AM60A-F (Cast alloy), Magnesium alloy (AZ63A), Aluminum 6061, Gray cast iron grade 20, Al 360 (cast alloy), Al 380 (cast alloy). The simulation results of the engine cylinder block made of cast iron with 2% nickel with fins having a spacing between fins of 4 mm and a cylinder perforation diameter of 4 mm on the fins are most suitable for a better heat transfer rate compared to the other materials used in this study
The Effect of Root Face Height and width of the Anvil Heating Plate of Hot-Gas Welding on Bending Strength of Hdpe Sheet fahruddin, Ahmad fikri; Setiawan, Agus; Listiyono , Listiyono; mustapa, Mohammad sukri
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 02, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.15

Abstract

Hot-Gas Welding is a welding process that is widely used in plastic materials. In previous studies, there was a phenomenon that occurred, namely the connection of the base material before the welding process which affected the bending strength of HDPE sheets. The purpose of this study was to determine the effect of variations in root face height and width of the anvil heating plate on bending strength, and also to determine the interaction of the two variables. The method used in this study was experimental. The hot-gas welding process, by varying two independent variables, namely root face height 0 mm, 0.8 mm, 1.6 mm, 2.4 mm and anvil heating plate width of 10 mm, 15 mm, and 20 mm, with controlled variables HDPE material with 5 mm thick, HDPE filler with 4 mm thick, hot gas temperature 250 ℃, single v bevel shape, anvil plate temperature 150 ℃ and v grove angle 60º. The results of this study indicate that the root face height and width of the anvil heating plate affect the bending strength of hot-gas welding HDPE sheets. The maximum value of bending strength is 47.14 Mpa or 85.32% of the bending strength of the parent material. The maximum bending strength value is obtained from the interaction of root face height of 2.4mm and anvil heating plate width of 20mm. Weld defects in the highest bending strength results were identified the least.
The Effect of Pin Length and Compressive Force in Double Side Friction Stir Welding on Bending Strength of AA1100 Sukma Satriawan; Setiawan, Agus; Pebrianti, Dwi; Binti MD. Zain, Zainah
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.16

Abstract

Many new welding methods have emerged to improve connection results, including friction stir welding (FSW). FSW is a welding method that is widely used in welding aluminium alloys. FSW method on AA1100 aluminium material has not yet obtained the maximum bending strength so it is necessary to study the improvement of the quality of FSW joints using the welding method on both sides or double side friction stir welding (DFSW). This study aims to determine the effect of pin length and downward force on double side friction stir welding (DFSW) on the bending strength of AA1100 aluminium . The independent variables of this study are pin length (1.5 mm, 2 mm, 2.5 mm) and downward force (30 kg, 35 kg, 40 kg, 45 kg). The controlled variables are shoulder diameter of 25 mm, machine table translational speed of 10 mm/min, spindle rotation speed of 1750 rpm, base plate temperature of 250ºC, and AA1100 plate thickness of 3.6 mm with butt joint type welding connection model. The method used in this research is experimental using the factorial design of experiment (DOE) data analysis method. The results of this study indicate that pin length and downward force have a significant effect on the bending strength of DFSW welded joints on AA1100. The maximum bending strength value of the welded joint was 289.59 MPa at a pin length variation of 2 mm and a compressive force of 35 kg. The percentage of weld defects including tunnel and flash in welded joints with maximum bending strength is identified as the least and the micro test results also show the least FeAl3 particle grains.
Optimization Study of Diameter, Length, Filter Hole, and Engine Speed in Modified Exhaust on Power and Noise Level of 110 cc Motorcycle Susilo, Sugeng Hadi; Anantya, Muhammad Zulfikar Rizky; Yusof, Hazlina Md
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 02, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.17

Abstract

The muffler functions to reduce noise. Changes in the muffler design can also affect engine performance and the environmental impact due to noise. In densely populated urban environments, the high noise level from motor vehicles can disturb the surrounding community. The purpose of this study are as follows: 1) To understand the influence of changes in muffler diameter, pipe length, and filter hole on power. 2) To understand the influence of changes in muffler diameter, pipe length, and filter hole on noise levels. 3) To determine the optimal values obtained from changes in muffler diameter, pipe length, and filter hole diameter. The study method is a two-stage experiment. The first stage aims to determine pressure values and flow velocities to identify the optimal values for muffler design. The second stage aims to determine power and noise levels to assess the effects of the muffler design changes.Based on the conducted study, there are effects from changes in muffler diameter, pipe length, and filter hole diameter on the generated engine power. The highest power output was obtained at the variable of 50 mm muffler diameter, 425 mm pipe length, and 2 mm filter hole diameter. As for the impact on noise levels, the lowest noise level was recorded at the variable of 38 mm muffler diameter, 525 mm pipe length, and 2 mm filter hole diameter. The optimal values were obtained through muffler design changes with a diameter of 45 mm, pipe length of 475 mm, and a 2 mm filter hole diameter
THE The Effect of Mixing Plastic Pyrolysis Oil with Pertamax and Variation Of Ignition Timing on Performance and Emissions Naufal Hana Rizqullah; Monasari, Ratna; Utami Handayani, Sri; Aditya, Candra
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.18

Abstract

One source of energy that has not been utilized optimally is waste. One of the abundant waste materials is plastic waste. Processing plastic waste in the form of plastic pyrolysis oil affects the performance and emissions of motor vehicles when mixed with Pertamax fuel, as well as variations in ignition timing. The purpose of this research is to determine the influence of changes in ignition timing on engine power, as well as to investigate the impact of using Pertamax mixed with pyrolysis fuel results on engine power. The fuel mixture is prepared based on volume ratios (0%, 10%, 20%, 30%, 100%) of pyrolysis to gasoline, with engine speeds ranging from 6500 to 9000 rpm. The experiment results, when the ignition timing was set at 6⁰, 8⁰, and 10⁰, there was a slight decrease in power and less stable results in some engine speed.
Characterization of the Bioenergy Potential of Corncob and Rice Husk mixtures in Biochar Briquettes Asrori, Asrori; Alfarisyi, Mirza Fathus Syifa; zainuri, Ach. Muhib; Naryono, Eko
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.22

Abstract

Briquettes are a form of solid fuel that is produced using waste from the agricultural, industrial and household sectors. For example, briquettes can be produced from biomass waste such as rice straw and corn cobs, which are potential resources that can be utilized to produce bioenergy in the form of briquettes. This study aims to develop and test the characteristics of biomass briquettes in order to evaluate the quality of the biochar briquettes and the calorific value they produce. The method used in this study was experimental, in which the adhesive and the composition of the mixed ingredients were varied as independent variables to affect the quality of the briquettes, while the moisture content, ash content, burning rate,put birds, calorific value is used as the dependent variable. In this study, the results obtained for water content ≤ 5%, volatile matter ≤ 10%, calorific value ≤ 6.553 cal/g, and a burning rate of 0.17 gram/minute which is expected according to the Indonesian National Standard (SNI) 01 6235 2000, namely the water content ≤ 8%, volatille matter ≤ 10%, calorific value ≤ 5,000 cal/g. The results of this study indicate that the biomass briquettes can meet the established quality standards, with appropriate moisture, ash and volatile matter content. In addition, the resulting calorific value also reaches the desired figure, indicating the potential of biomass briquettes as an efficient alternative fuel. The combustion rates found in this study also indicate that the biomass briquettes have characteristics that allow stable and effective combustion. Thus, this research succeeded in developing and testing the characteristics of biomass briquettes as an alternative fuel. The results of this study can contribute to the development of renewable energy sources and efficient use of biomass waste, as well as promote efforts to mitigate the negative impacts of the conventional energy sector on the environment.
Analysis of 3D Printing Applications with ABS Filament Material for Designing Unmanned Aircraft Bodybuils Lazuardi, Lazuardi; Akhlis Rizza , Muhammad; Hadi Susilo, Sugeng; Maryono , Maryono
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.28

Abstract

This research applies 3D printing technology using ABS filament material in designing the body of an unmanned aircraft. A quantitative approach to the simulation results is used to highlight the technical superiority of unmanned airframes. The analysis includes aspects such as structural strength. These findings provide deep insight into the potential application of 3D printing technology in the aerospace industry, as well as its application to the design, production costs and performance of unmanned aircraft. The research results show that the use of 3D printing with ABS filament has the potential to produce a strong and light aircraft body. From the research, it was found that the ideal layer thickness parameter of 0.1 to 0.2 mm does not exceed half the size of the nozzle diameter of 0.4 mm to produce fine raster fibers on the aircraft body without a crew. From the research it was found that the ideal speed parameter for printing the aircraft body frame unmanned aircraft with ABS filament material at a speed of 30 mm/s to 50 mm/s to produce a stable raster fiber size on the aircraft body and the percentage parameter of a good fill for printing the body frame of an unmanned aircraft is at a value of 20% up to 40%. The research results found the best printing parameters for printing aircraft frames with the parameter formula of 0.15mm 3D layer height, 20% gyroid infill, with a speed of 30mm/s maximum tensile strength reaching 30.7 MPa. By considering the challenges and opportunities associated with the use of 3D printing technology, this research provides a solid foundation for further development in designing and producing unmanned aircraft bodies efficiently and innovatively.
The Effect of a Mixture of Gasoline and Ethanol in a Direct Injection System Engine on Power and Specific Fuel Consumption Fina Rizqiani; Irawan , Bambang
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 03, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.v1i03.34

Abstract

The use of fossil fuels as the main fuel for vehicles is one of the problems in the automotive industry, considering that supplies are increasingly running low. The use of renewable fuel is an alternative in dealing with this problem, one of which is the use of ethanol as a gasoline fuel mixture. Ethanol which can be obtained from plants is more promising in terms of energy sustainability, and the high octane value of ethanol allows for increased combustion efficiency and can produce optimal engine power. This research identifies the influence of gasoline-ethanol mixture and engine speed on power and specific fuel consumption in direct injection engines. The research was carried out by testing the power of an electric generator driven by a 1-cylinder direct injection engine, as well as calculating fuel consumption while the engine was operating. The results of this research show that the E10 produces the best performance at low and medium revs with the highest power of 0.119 kW and 0.490 kW, while the E5 is superior at high revs with a power of 0.644 kW. In terms of fuel efficiency, E15 has the lowest SFC at low speed (3.83 L/kWh), E10 at medium speed (0.96 L/kWh), and E5 at high speed (0.77 L/kWh). E20 shows the lowest efficiency in all runs. The results of this research can be used to design direct injection engines with mixed fuels consisting of gasoline, ethanol and diesel
The Effect of Different Octane Number on Power and Specific Fuel Consumption in Gasoline Compression Ignition Engine Fernanda, Mohammad Adam; Irawan, Bambang
Evrimata: Journal of Mechanical Engineering Vol. 02 No. 02, 2025
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.35

Abstract

Internal combustion motors are a type of engine used as the main source of power for transportation equipment. This engine functions to convert heat energy into kinetic or motion energy. Compression ignition (CI) utilizes the increase in temperature and pressure during compression to ignite the fuel. The octane number or research octane number (RON) indicates the maximum pressure that can be received before gasoline burns itself. A lower octane number increases the likelihood of detonation of the fuel. Gasoline with a higher octane number is basically designed to prevent premature ignition or auto ignition of the gasoline in the engine. This research focuses on the power and specific fuel consumption of gasoline compression ignition engine at each variation in fuel octane number and engine speed. The fuel used is a mixture of 94% gasoline and 6% diesel fuel. The highest average power results at an engine speed of 1900rpm from 90, 92 and 95 octane fuel respectively are 0.475 kW, 0.728 kW and 0.764 kW. The average results of specific fuel consumption at 1900 engine revolutions were obtained for fuel with octane numbers of 90, 92, and 95 respectively at 0.92 L/kWh, 0.91 L/kWh, and 0.65 L/kWh.
The Effect of Ethanol and Water Fuel Mixture in Direct Injection Diesel Engine on Power and Specific Fuel Consumption Akhmad Nafii; Irawan , Bambang
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 02, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.36

Abstract

The increasing use of fossil energy is causing a national and global energy crisis. To reduce dependence on fossil energy, planned actions are being taken to replace fossil energy with alternative energy sources, one of the alternative fuels that can be burned is ethanol or ethyl alcohol. This research aims to identify the effect of using a mixture of ethanol and water fuel, by controlling the ethanol content and the effect of engine speed on power and specific fuel consumption in direct injection engines, as well as identifying the interaction between ethanol content and engine speed. This research uses an experimental method by testing a direct injection engine connected to an  electric generator to determine power and SFC by testing variations in ethanol content and engine speed. For the load in this test, 3 250 Watt lamps are used. The result was that when testing the direct injection engine using a 93% ethanol fuel mixture it produced a power of 0.115 kW at 1300 rpm, while in the 96% ethanol test the power obtained was 0.118 kW at the same engine speed. For an ethanol content of 99% at 1900 engine speed, the highest power is obtained, reaching 2,326 kW, this indicates that the higher the ethanol content used, the greater the power produced. However, the SFC value has decreased. As in testing 93% ethanol content at 1300 engine speed, the SFC obtained was 2.2997 L/kWh. At 99% ethanol content, SFC experienced a minimum decrease of 0.6418 /kWh. At low ethanol levels, the water content tends to be high which causes the combustion process to be incomplete. 

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