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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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The Effect of Combustion Chamber Volume and Engine Rotation on Temperature and Compression Pressure of Single Cylinder Diesel Engine Prasetyo, Sigit; Irawan, Bambang
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 04, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.38

Abstract

The effect of combustion chamber volume and engine rotation on the temperature and compression pressure of this single-cylinder diesel engine aims to convert the use of diesel fuel in diesel engines into gasoline fuel by utilizing high compression without using the help of spark plugs during ignition. The main focus of the study is to understand the effect of variations in combustion chamber volume and engine rotation on temperature and compression pressure in order to find optimal operating conditions. The General 170fd single-cylinder diesel engine was used as the object of research. The testing tools used include the TC-08 Thermocouple sensor module, the thermocouple sensor, and the pressure gauge to measure the temperature and compression pressure. The research was carried out using various gasket thicknesses, namely 0.6mm, 0.8mm, 1.4mm, 1.6mm, and 1.8mm to vary the volume of the combustion chamber. The data collected was analyzed to determine the relationship between changes in the volume of the combustion chamber and engine rotation to the temperature and compression pressure. The results of the study are expected to provide insight into the ideal conditions for gasoline ignition in diesel engines without the use of spark plugs, as well as contribute to efforts to optimize the use of alternative fuels. The results of the experiment showed that variations in the volume of the combustion chamber and engine rotation had a significant impact on the temperature and compression pressure. The determination of the appropriate temperature and compression pressure is expected to improve the efficiency and performance of diesel engines when using gasoline fuel, thereby reducing operational costs and increasing the flexibility of engine use in various applications. This research makes an important contribution to the understanding of diesel engine modifications for gasoline fuel use, which can be applied without testing exhaust emissions, with a focus on ideal temperature and compression pressure.
The Effect of Using Epoxy As a Substitute For Hydroxyl-Terminated Polybutadiene (HTPB) on Manufacturing Solid Propellants Maryono, Maryono; Ali, Muhammad; Lazuardi, Lazuardi
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.v1i03.39

Abstract

The solid propellant consists of ammonium perchlorate (AP)/Hydroxyl- Terminated Polybutadiene (HTPB) composite material. In this research, innovation was carried out using epoxy as a substitute for HTPB. The analysis carried out in this research includes analysis of fuel propagation speed, combustion temperature, exit pressure, gas speed, and thrust force. Based on the results of research that has been carried out, increasing the addition of epoxy results in a decrease in combustion speed, combustion temperature, exit pressure, and combustion gas speed so that the resulting thrust force decreases. The most optimum composition in this research was composition A using 46% Ammonium Perchlorate, 36% Aluminum, and 18% Epoxy. The resulting thrust force on composition A is 750.5771 N. The difference in the thrust force results between HTPB and composition A is 1.8731 N. This proves that epoxy can be used as a substitute for HTPB.
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.
Simulation of Quadcopter Flying Electric Vehicle Chassis Hadi Susilo, Sugeng; kurniawan, kurniawan; Yudiyanto, Eko; Indra Kurniawan, Bakti
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.v1i03.48

Abstract

The increase in population means that the need for transportation is also increasing, causing more or less air pollution. Besides that, fuel oil is also a non-renewable natural resource. Oil fuel comes from plants and animals that have been dead for millions of years which have become fossils and which have been formed for a very long time  automatically become expensive. Therefore, people need vehicles that have many  advantages, including environmentally friendly, do not produce air pollution, do not produce noise, avoid traffic jams, and are easy to maintain. Flying electric vehicles are the right choice to overcome this problem. Electric car is a car driven by an electric motor that uses electric power stored in a battery. One of the advantages is that the engine construction is simpler compared to combustion engines which have so many components because there is combustion in the engine. Electric vehicles certainly need a chassis. The chassis that will be used is a tubular chassis type using fiberglass. The aim of this research focuses on planning electric flying vehicles, more precisely on static simulation of chassis design. The results of this research can be used as consideration for designing the chassis structure of flying electric vehicles. This research is expected to be the beginning of the development of an electric quadcopter flying vehicle chassis.
Small PLTS Off Grid 240 WP on Residential House Rooftop Puspitasari, Etik; Eko Yudiyanto; Lisa Agustriyana; Nila Alia
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.v1i03.56

Abstract

Small PLTS on residential rooftops are now being widely applied. It can contribute to using alternative energy to support government programs to save electricity costs. It can also be used as backup electricity when PLN power outage. The purpose of this research is to be able to calculate the use of electric power in residential homes, design and make small PLTS off grid 240 WP from the use of electric power, calculate BEP when the payback time of the total investment in the procurement of small PLTS 240 WP with DC and AC systems. 240 WP power on the rooftop of a residential house is carried out for a load of 8 lights AC with 6 watts and one fan. This research showed that the total daily electric power usage was 0.55 kWh/day or 16.5 kWh/month. The design of 240 WP PLTS on the rooftop of a residential house according to the total household electricity needs of 550 watts/day requires core equipment such as two solar panels (120 WP), one battery (12 V 100 Ah), Inverter (12 V to 220 V) = 1000 Watt or 1 kWh as much as one piece, SCC = 20 A as much as one piece. The results of making 240 WP PLTS on the rooftop of a residential house accorded to the total electrical power needs of the household. Break Even Point on this application of 240WP solar power PLTS on residential rooftops with 1300 V power will return capital in 19.5 years. Where the total investment cost of procuring 240 WP PLTS is Rp. 5,558,000, and the cost of electricity per month from the above load is Rp. 23,850 / month or Rp. 286,200 / year.
Effect of Coconut Shell-Based Active Carbon Adsorbent on Motorcycle Exhaust Gas Emissions Putra Gitama, Nahindi; Hidayat, Najmul; Pebrianti, Dwi
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.v1i03.57

Abstract

This study focused on the utilization of active carbon derived from coconut shells as an adsorbent to reduce exhaust gas emissions in motorcycles. The research aimed to compare the exhaust emissions before and after installing active carbon in the muffler and to analyze its effect on the levels of CO, HC, and CO2 at different engine speeds. A laboratory experiment was conducted with varying masses of active carbon, and emission data were collected and analyzed using two-way ANOVA. The results demonstrated that with the use of 200 grams of active carbon, the CO emission decreased by 12.06%, HC by 16.96%, and CO2 by 9.17%. These reductions are attributed to the strong adsorptive properties of active carbon, which facilitated the physical and chemical separation of harmful gases. The study concluded that active carbon significantly reduces exhaust emissions, providing a practical solution for improving air quality in motorcycles. The findings offer an effective method for emission control that could be applied under various operating conditions, making it suitable for widespread implementation in emission-reduction systems for small engines.
The Effect of Pin Length and Compression Force in Double Side Friction Stir Welding on Tensile Strength of AA1100 Andiansyah, Mochamad; Setiawan, Agus
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 04, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.v1i04.14

Abstract

Friction Stir Welding (FSW) is solid state welding without additives and does not produce pollution. There are two FSW welding methods, namely single side (FSW) and double side (DFSW). The FSW process in previous studies using aluminum materials, especially AA 1100 type, has not obtained optimum joint strength. Therefore, it is necessary to conduct a research study on improving the quality of tensile strength of welding results using the DFSW method on AA1100. The purpose of this study is to determine the effect of variations in pin length and compressive force on the maximum tensile strength of the results of Double Side Friction Stir Welding Aluminum Alloy 1100 welding joints. The method used in this research is experimental. The welding process uses Double Side Friction Stir Welding, by varying two independent variables namely pin length 1.5 mm, 2 mm, 2.5 mm and compressive force 30 kg, 35 kg, 40 kg, 45 kg. The controlled variables used include travel speed (10 mm/min), heating temperature (250℃), shoulder diameter (25 mm), heating plate width (10 mm), and Aluminum AA1100 plate thickness (3.5 mm), with butt joint type welding. The data analysis used is Factorial Design of Experiment (DOE). The results of this study indicate that pin length and compressive force affect the tensile strength of AA1100 material welds. The maximum tensile strength value of DFSW welding results is 90.16 MPa or 80.5% of the tensile strength of the parent material. The maximum tensile strength value was obtained from the interaction of 2 mm pin length and 45 kg compressive force.
Single Propeller Design of Flying Electric Vehicles Syahyogi, Abbi Ewton; Susilo, Sugeng hadi
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 04, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.v1i04.55

Abstract

The development of passenger drone technology has opened up new opportunities in the air transportation industry, offering innovative and efficient mobility solutions. One of the key components in eVTOL vehicle design is the propeller, which functions to produce the thrust required for takeoff, hovering and flying. Efficient and optimal propeller design is very important to improve the performance and energy efficiency of these vehicles. The method used in this research includes computational fluid dynamics (CFD) simulation analysis to model the interaction between the propeller and air flow. The methodology used includes computational fluid dynamics (CFD) simulations to analyze the air flow and forces acting on the propeller, as well as prototype testing to validate the simulation results.
Analysis of The Application of 3D Printing To Design A Water Thruster Jet Boat LAZUARDI, LAZUARDI; Maryono Maryono; Sugeng Hadi Susilo; Muhammad Akhlis Rizza
Evrimata: Journal of Mechanical Engineering Vol. 01 No. 04, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.v1i04.59

Abstract

This study analyzes the application of 3D printing technology in designing and building a water jet propulsion for boats. 3D printing technology provides significant advantages in terms of design flexibility, cost reduction, and the ability to produce components with high complexity that are difficult to achieve with traditional manufacturing methods. The research process begins with creating a digital design using CAD (Computer-Aided Design) software. The material used is ABS (Acrylonitrile Butadiene Styrene) filament, which is known for its strong mechanical properties and resistance to maritime conditions. The prototype of the water jet propulsion was then produced using a 3D printer. The results showed that 3D printing of ABS filament allows it to be used as an impeller component with a maximum tensile strength of 24 Mpa which is stated to be safe because the maximum stress that occurs in the impeller when working is 18.73 Mpa. The performance analysis of the resulting water jet propulsion reached 571 cm/s indicating increased efficiency and operational stability. The conclusion of this study is that 3D printing technology is effective and efficient in designing and building water jet propulsion, offering an innovative solution that has the potential to improve the performance and efficiency of the maritime industry.

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