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Asian Journal Science and Engineering
Published by CV. Creative Tugu Pena
ISSN : 29636752     EISSN : 29636752     DOI : http://dx.doi.org/10.51278/ajse.v1i2.545
Core Subject : Science, Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Asian Journal Science and Engineering publishes all those best ideas from the science, which can be introduced in the engineering. Since, obtaining the high-quality, competitive products is based on introducing high technologies from various independent spheres of scientific researches, but united by a common end result - a finished high-technology product. The purpose of this journal is to publish quality articles dedicated to the scientific research development that focuses Mechanical Engineering, Civil Engineering, Chemical Cngineering, Electrical Engineering, Engineering Physics
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 44 Documents
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Exploring the Potential of Ramie Fiber Composites as Eco-friendly Materials for Medical Prostheses Ramadhana Luhur Prabangkara; Sugeng Hadi Susilo
Asian Journal Science and Engineering Vol 2 No 1 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i1.677

Abstract

The insect Callosobruchus maculatus, is responsible for serious damages in the storage of grains of diverse cultures, among them, the one of the beans. Therefore the development of substances capable of being an alternative to minimize agricultural losses and thus contribute to food security of the population is a current necessity.This research aims to explore new materials derived from natural fibers for the development of environmentally friendly and recyclable medical devices, particularly prostheses. The focus is on utilizing ramie fiber, a natural fiber, as a substitute for artificial fibers and plastics in composite materials. The study investigates the impact and bending strength of ramie fiber composites by varying the volume fraction and fiber orientation. The experimental design involves three volume fractions (1%, 3%, and 5%) and three fiber orientations (10°, 20°, and 30°). Hand lay-up method is employed on molds, ASTM D256 impact tests and ASTM D7264 bending tests are conducted to assess the mechanical properties. The findings indicate that the ramie fiber composite with a volume fraction of 5% and fiber orientation of 30° exhibits the highest bending strength, measuring 471.1 Mpa. Similarly, this composition demonstrates the highest impact strength value of 26,558,720 Pa. Overall, this research contributes to the advancement of sustainable materials for medical prostheses and highlights the significance of optimizing the composition of ramie fiber composites to enhance their mechanical properties. Keywords: Ramie Fiber, Composite Materials, Medical Prostheses
The Effect of Active Carbon from Coconut Shell as an Adsorbent on Motorcycle Exhaust Gas Emissions and Engine Performance Mohammad Sukri Bin Mustapa; Agus Setiawan; Gumono Gumono
Asian Journal Science and Engineering Vol 2 No 1 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i1.675

Abstract

This study investigates the advantages of using active carbon as a catalyst, including its deodorizing and color adsorption properties, its ability to act as a purifying agent, common adsorbent, and permeable membrane. Additionally, active carbon exhibits strong binding power to substances that are physically or chemically separated. The objectives of this research are to compare the exhaust gas emissions of motorcycles before and after the application of an adsorbent on the muffler and to analyze the effects of active carbon derived from coconut shell on the engine speed of carbon monoxide (CO), and hydrocarbons (HC). The experimental approach involved conducting laboratory experiments with varying masses of active carbon to collect data. The independent variables were the mass of active carbon and the engine speed, while the dependent variables were the emissions of CO, and HC. The results indicated that using 200 grams of active carbon derived from coconut shell as an adsorbent resulted in a 12.06% decrease in CO emissions, and a 16.96% decrease in HC emissions. Keywords: Active Carbon, Exhaust Gas Emissions, Coconut Shell
Optimization Study of the Ratio of Bioethanol Bioaceton Ron 90 on the Power and Emissions of a 110cc Gasoline Motor Syva Kurniawan; Dwi Pebrianti
Asian Journal Science and Engineering Vol 2 No 1 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i1.759

Abstract

Fossil fuels have become one of the main causes of increasing pollution in the world, especially in Indonesia. Comparisons between proposed bio-acetone fuel blends and other biofuels were introduced in a unique study. bio-acetone is a promising alternative and can improve performance and emissions over the others. The aim of the research was to determine the optimization of the ratio of bioethanol, bioacetone-Ron 90 to power and exhaust emissions (HC and CO). Fuel mixture ratio bioethanol, bioacetone - RON 90 ((3:7:10), (5:5:10), (7:3:10), (10:5:5), (7,5:7, 5:5), (5:10:5), (2,5:2,5:15), (3,5:1,5:15), (1,5:3,5:15)) and engine speed (2000, 3000, 4000, 5000, 6000) 110cc gasoline engine rpm. The data processing method uses the Response surface method. The results of research on power and emission tests that have been optimized, the optimum value for fuel ratio power at standard spark plugs, at a ratio of 1.5:3,5:15 and Rpm 4424.24 with a power of 8.02065 HP. The optimum value for HC emissions is at a ratio of 3:7:10 at Rpm 4222.22 and HC gas emissions are 43.9879 ppm. Optimum value for CO emissions at a ratio of 7.5:7.5:5 and 2000 rpm with a CO emission of 0.208712%. Keywords: Optimization Bioethanol, Biocetone, Power and Emissions
Analysis of Bioethanol Purification with Two Outlet Distillation System Iqbal Zulfikar; Bambang Irawan
Asian Journal Science and Engineering Vol 2 No 1 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i1.761

Abstract

The purpose of this study is to analyzes of the process of purifying bioethanol produced by a distillation apparatus that uses two holes of different heights. The equipment used in this study is a distillation prototype tool which has two steam holes coming out of the vessel, with different height positions. The research method used is experimental. Data collection was based on the results of distillation experiments with the independent variable alcohol content in the solution, the dependent variable alcohol content resulting from the distillation process and the control variable is steam temperature and processing time. The results of the study were processed with statistics showing that the position of the holes affects the product resulting from the alcohol content in bioethanol, a high hole position will produce bioethanol with a greater alcohol content. The alcohol content in the solution that is put into the distillation vessel affects the distillation results, the greater the alcohol content, the greater the alcohol product. The interaction between the position of the holes and the alcohol content in the solution affects the amount of alcohol product in the bioethanol. input solution containing low alcohol cannot reach the distillation results of bioethanol with high alcohol content. Bioethanol through the top hole has a higher alcohol content than that through the bottom hole. The alcohol content in the solution affects the difference in the alcohol content produced between the upper and lower holes. Distillation can produce bioethanol with a high alcohol content of up to 96%, with a solution containing about 85% alcohol. This distillation process can be done privately so that everyone can make fuel for their own vehicles. Keywords: Bioethanol Purification, Distillation System, Purifying Bioethanol
Simulation Analysis of Riveted Joint Specimen with Parameter of Working Pressure and Hole Clearance Using Semi-Automatic Riveting Tool Galang Saputro; Muhammad Akhlis Rizza; Utsman Syah Amrullah
Asian Journal Science and Engineering Vol 2 No 1 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i1.397

Abstract

Squeeze force, rivet length, rivet diameter, and hole clearance are the factors that affect the riveting procedure and the effectiveness or result of the rivets. In this riveting simulation, the riveting parameters are determined using a semi-automatic riveting tool. The semi-automatic riveting tool's working pressure is the parameter set, and the hole clearance is created during the drilling process on sheet metal. The results of riveting simulation show that the working pressure of the rivet gun and the hole clearance directly impact the rivets' shear strength. The shear strength of the rivets will increase with higher operating pressure of the rivet gun and larger hole clearance. Due to the strain hardening that occurs when rivets are hit with a rivet gun during the riveting process, the shear strength of rivets has increased. Keywords: Rivet Gun Pressure, Hole Clearance, Shear Strength
The Effect of Strong Magnetic Field and Engine Rotation on Fuel Consumption and Exhaust Gas Emissions for Gasoline Engines Nugraha, Adelansyah; Orhani, Senat
Asian Journal Science and Engineering Vol. 1 No. 1 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v1i1.394

Abstract

An Iincreasing number of means of transportation in various cities causes air pollution. There have been many studies to reduce air pollution due to motorized vehicles. One of them relates to the fuel line. The purpose of this study was to determine the relationship between the strength of the magnetic field in the fuel line on fuel consumption and exhaust emissions. The research method uses a pure experimental method. The independent variables are magnetic field strength (51, 102, 152, 202, and 249 gauss) in the fuel line and engine speed (1500 rpm, 2500 rpm, 3500 rpm and 4500 rpm). The dependent variable is fuel consumption (ltr/hour) and exhaust emissions. Test was carried Fourier transform infrared out to determine the chemical compound group of the fuel. The results showed that the highest concentration of transmittance at a wavelength of 2850 cm?¹ - 2970 cm?¹ was 77.75% with a magnetic field strength of 249 gauss, when compared to standard conditions it was 33.05%. At a strong magnetic field of 249 gauss with a rotation of 2500 rpm, it can save fuel consumption of 0.2 liters/hour. In addition, it can also reduce the level of exhaust gas O? by 4.16% (3500 rpm), CO gas by 1.29% (2500 rpm), CO? gas by 5.2% (1500 rpm) and HC gas by 215.66%. (4500 rpm). Keywords: Strong Magnetic, Fuel Consumtion, Exhaust Gas Emissions
Analysis of Volume Fraction and Fiber Orientation on Tensile Strength and Impact Strength of Cannabis Sativa-Polyester Fiber Composites Prabangkara, Ramadhana Luhur; Tuymuratovna, Ismatova Dilafruz; Sudjianto, Agus Tugas; Suraji, Aji
Asian Journal Science and Engineering Vol. 1 No. 1 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v1i1.395

Abstract

The development of composite materials in the engineering field is increasingly being used. This is due to its superior properties compared to conventional materials, such as the ratio between strength and density is quite high, rigid, the manufacturing process is very simple and resistant to corrosion and fatigue loads. The article determines the composition of the volume fraction and orientation of the fibers that have the most optimal tensile strength and impact on Sativa-Polyester Cannabis fibers. In this study, the fiber volume fraction was varied into 10%, 15%, 20% and the orientations were 0o , 30o, 45o, 60o and 90o .The method of making specimens in this study used a hand lay up with the ASTM tensile and impact test standards. The result indicates that the fiber volume fraction of 20% with the fiber orientation of 90o has the highest average tensile strength value of 30.56 MPa, compared to other variations. And the fiber volume fraction of 20% with a fiber orientation of 90o has the highest average value of impact strength, namely 493.6 Joules Keywords: Volume Fraction, Cannabis Sativa Fibers, Fiber Composites
Simulation of Effect of Airfoil MH32 with Variation Taper Ratio and Angle of Attack Coefficient Lift and Drag Fixed wing Unmanned Aircraft Adiwidodo, Satworo; Wijaya, Andy Hermawan
Asian Journal Science and Engineering Vol. 1 No. 1 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v1i1.396

Abstract

Nowadays, the aerospace sector is growing very rapidly. One of the newest technologies is unmanned aerial vehicle. This UAV has functions to monitor disaster, mapping, espionage and shooting target. Therefore it needs a plane that can fly fast and agile. To achieve these characteristics, one of the most important things is the design of the wings. Some of the important parameters contained in the wings are the type of airfoil, aspect ratio, wing area, taper ratio, and angle of attack. The article aims to analyze the type of airfoil MH32 as well as the effect of the parameter taper ratio with variations of 0.2, 0.4, 0.6 in variations of angle of attack 0 °, 3 °, 6 °, 12 ° and 15 ° to the value of coefficient of lift and coefficient of drag. The method used in this research is experimental with a computational approach using a computer, the advantage of this method is that it does not need a real plane shape. The type of simulation used is Computational Fluid Dynamic (CFD) found in Ansys Fluent. From the simulation, value of coefficient of lift, coefficient of drag, and image of pressure contour and streamline velocity were obtained. All the data was processed and analyzed, then the result is that the taper ratio 0.4 has the highest lift to drag ratio of 19,417. It means that it has the highest value of the coefficient of lift and has the lowest coefficient of drag. These simulated results are validated with experimental from UIUC (University of Illinois at Urbana-Champaign) 1996. The conclusion of this study is that the smaller the taper ratio, the greater the value of the lift coefficient. Then increase the angle of attack to make the value of the lift coefficient is also getting bigger. Keywords: Simulation Effect Airfoil, Coefficient Lift, Coefficient Drag
Experimental Testing Comparison between Wiremesh Reinforcement and Plain Reinforcement on Concrete Slabs Rasidi, Nawir; Dora, Margaritha P.I; Ningrum, Diana
Asian Journal Science and Engineering Vol. 1 No. 1 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v1i1.405

Abstract

The demand for building quality in the construction of structures is a major requirement. One part of the structure is the floor slab work. The main obstacle is when the floor slab is loaded there will be deflection and bending moment. Meanwhile, there are demands for shorter work times at lower costs. This study aims to analyze the concrete slab against the flexural strength test, compressive strength test and tensile strength test of plate reinforcement. In this study, plate reinforcement used plain steel with a diameter of 6 mm and 8 mm. Then the plain iron reinforcement plate was compared with the M6 ??and M8 wiremesh reinforcement plates. The results showed that the flexural strength test for plain iron reinforcing plates with a diameter of 6 mm was 45000 Kg.cm, while for a concrete slab with wiremesh M6 reinforcement it was 42500 Kg.cm then for reinforcement with a diameter of 8 mm it was 32500 Kg.cm while wiremesh M8 was 57500 Kg. .cm. This shows that the concrete slab with wiremesh reinforcement is better able to accept the load, as well as better moment capacity in bending, compressive and tensile tests compared to conventional slabs. Keywords: Concrete Slabs, Wiremesh Reinforcement, Plain Reinforcement
Compressor Air Pressure and Brake Shield Distance Brake to Braking Accuracy on Brakes Antilock Braking System Listiyono, Listiyono; Nurhadi, Nurhadi; Khambali, Khambali
Asian Journal Science and Engineering Vol. 1 No. 1 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v1i1.419

Abstract

The development of automotive technology to date is very fast. In the city, it is almost rare to find conventional cars. Most are already using modern technology. The hallmark of modern cars is that they are not fully mechanical. Already combined with several electric and pneumatic tools. Until now the development in the field of chassis is endless. Its initial development began with the discovery of ABS (Anti Lock Brake System) brakes. Basically, ABS is followed by supporting components such as EBD, ESP, and so on.All of this is actually inseparable from the main function of braking. Namely so that the car can run well,, deceleration and stop as desired appropriately. The parts of the brakes that are most influential are the brake shoes and discs and the compressed air from the brakes. Also the most influential accuracy is the distance of the brake shroud. Therefore, in this study the aims of 1. To find the effect of pressure and brake shroud distance. 2. What is the minimum air pressure and brake shroud for the brakes to work properly (grip). This research uses experimental design method. The data is processed with the Minitab program. Data processing shows that: 1. The braking speed is influenced by the amount of compressed air pressure. Partially the distance of the brake shroud does not affect the braking speed. But the interaction of pressure and shroud distance has an effect on braking speed. 2. Air pressure that can be used as a fast ABS braking process is 3.75 – 4.25 (bar) with a shroud distance of 5 (mm). Keywords: Compressor Air Pressure, Braking Accuracy, Antilock Braking System

Page 2 of 5 | Total Record : 44

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