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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 5 Documents
 1 
Search results for , issue "Vol. 01 No. 02, 2024" : 5 Documents clear
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.
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 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. 
Analysis of Material Variations (Ammonium Perchlorate / Aluminum / Epoxy) And Pressure on Propellant Combustion Speed Hidayat, Teguh Rakhmat; Whidiyanto, Purwo; Maryono, Maryono; Mangililo, Richard Costantin; Zai, Andy Saputra
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.40

Abstract

In this research, a comparative analysis of propellant combustion speed was carried out with variations in AP/Al/Epoxy materials and pressure variations. The higher the pressure, the greater the speed of combustion. Based on the results of the research, the relationship between the air pressure provided is directly proportional to the combustion speed and the mass flow rate of the propellant. The greater the pressure applied, the higher the combustion speed and propellant mass flow rate. The best performance is found in propellant B with a value of n = 0.44. A constant value close to 0 (zero) indicates a much more sensitive level of propellant sensitivity. The resulting mass flow rate at an initial atmospheric pressure of 0.332 gr/s and at an initial pressure of 5 bar is 0.791 gr/s
ESP 8266-Based Car Battery Current and Voltage Monitoring Design Reynaldo; Winoko, Yuniarto Agus
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.43

Abstract

Fluctuations in engine speed can make motorists unaware of the actual battery voltage and current, even though the battery voltage should be above 85% of the maximum voltage. Typically, the battery voltage for petrol engines is around 12.5 Volts in order to function properly. This study aims to calculate the changes in current and voltage at various loads when the engine rotation is at 1000, 1500, 2500, 3000, 3500, and 4000 rpm. Measurements were made using the ESP8266 microcontroller and compared with measurements using a multimeter. Data was taken by measuring the current and voltage of the battery when the engine was loaded by AC, audio, and lights. The test results show that the voltage measured with a multimeter tends to be higher than that measured with a smartphone. The voltage measured by the multimeter increased from 1000 to 2000 Rpm, decreased at 2500 Rpm, and increased again up to 4000 Rpm. When measured with a smartphone, the voltage tends to be stable from 1500 to 3000 Rpm, and then increases at 3500 and 4000 Rpm. The charging system shows an increase in fulfilled electricity demand at each revolution.

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