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Radissa Dzaky Issafira
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Department of Mechanical Engineering, Faculty of Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur 1st floor Giri Reka Building, East Java, Indonesia Jl. Raya Rungkut Madya, Gunung Anyar Surabaya Jawa Timur 60294 Indonesia
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Biomedical and Mechanical Engineering Journal
Published by Universitas Pembangunan Nasional Veteran Jawa Timur
ISSN : -     EISSN : 27761983     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The Biomej Journal is published by the Mechanical Engineering Study Program, Faculty of Engineering, East Java "Veteran" University, Surabaya-Indonesia. Biomej is an open-access peer review journal that mediates the dissemination of academics, researchers, and practitioners in the field of mechanical engineering and accepts journal publications from all over Indonesia. Biomej aims to provide a forum for national and international academics, researchers and mechanical engineering practitioners to publish original articles. All accepted articles will be published and will be freely available to all readers with wide visibility. The scope of the Biomej Journal is including widely topics in engineering such as: 1. Biomedical engineering 2. Tribology 3. Modelling 4. Finite ELement Method 5. Material Science 6. Mechatronics 7. Structural and Machiine Design 8. Stress Analysis 9. Renewable Energy 10. Structural Mechanics 11. Thermodynamics 12. Material Processing 13. Fatigue and Air Conditioning 14. Heat Transfer 15. Manufacturing 16. Fluid Mechanics 17. Combustion 18. Aeodynamics 19. Environmental Protection 20. Acoustic and Noise 21. Energy Studies 22. Refrigerationand Air 23. Conditioning 24. Engines and Turbines 25. Thermodynamics 26. Earth Science 27. Natural Hazards 28. Food Technology Processing
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 7 Documents
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Search results for , issue "Vol. 3 No. 1 (2023): BIOMEJ" : 7 Documents clear
Structural Strength Analysis of Walker (Walking Aid Device) Using the Finite Element Method AK faizin; N Hasan; LZ Faiza; NFR Supramono; P Bagas; GD Widagda; BY Saputro; MZ Purwananda
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

One of the uses of a walking aid device (walker) is to support walking ability and balance effectively. The walker is a walking aid device that provides support for both weak legs and uses both hands for stability. This research aims to analyze the stainless steel as material in the design of the walker using finite element method through ANSYS. In the modelling process, the walker adopts the design from the website grabcad.com. In the simulation stage, the walker is subjected to a load of 1000N with fixed support conditions on all four legs, and then undergoes a meshing process with a size of 3 mm. The material applied to the walker model is stainless steel. Static structural analysis is performed in Ansys Workbench. The simulation results show a deformation value of 0.011272 mm, and the value of equivalent stress or von Mises stress should not exceed 207 MPa, while the stress occurring in the frame is 5.67 MPa. This is still considered safe as the simulation results are lower than the yield strength of the material, while the strain energy value is 0.00587 mJ.
Design of The Pyrolysis Furnace for The Alternative Energy TP Sari; FA Nurmansyah; YC Winursito; I Nugraha
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

The pyrolysis furnace material needs to be considered because this component affects the performance of the pyrolysis process. This component material is also essential; the selection of components used is AISI 4340 Normalized Steel, where this material contains Nickel, Chrom, and Molybdenum, with the characteristics of the AISI 4340 Normalized Steel material, which is a steel material that has high hardness properties, can accept significant pressures and forces and is not easily deformed. The method used is Finite Element Analysis (FEA); this method uses a mesh size of 5 mm to get more accurate results. Simulation results of the AISI 4340 Steel Normalized rear axle shaft to determine the values of stress, strain, displacement, and safety factor from temperature variations of 150 °C, 175 °C, 200 °C and 225 °C. The highest maximum stress value occurs at a temperature of 225 °C of 7.339 x 108 Nm. The highest maximum strain value occurs at a temperature of 225 °C of 1.892 x 10 3. The highest displacement value occurs at a temperature of 225 °C of 4.891 x 10 1. The safest safety factor value to use is 1.547 at a temperature of 150 °C. The temperature value is directly proportional to the stress and strain values obtained because the more significant the given temperature value, the greater the stress and strain values.
Investigation of wt.% Si and Heat Treatment on the Mechanical Properties of Al6063 Aluminum Alloy by the Casting Product Propeller Shaft Model EI Bhiftime
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

Shaft propeller is one of the most important parts of ship propulsion installations. To produce a good quality shaft propeller, the ship propeller designer must consider various parameters, in order to produce the type and size of the propeller that has the value of effectiveness and high propulsion efficiency. Shaft propellers are usually made of steel but, in this study the propeller shaft model is made of Aluminum Alloy base material. So the material must have good mechanical properties. The purpose of this study is to see the mechanical properties of the sheller propeller with aluminum alloy base material with the addition of silicon elements and magnesium by going through the heat treatment process. The main base material used is 6063 aluminum alloy, with variations in the addition of Si (1, 2, 4 wt%). The addition of Mg can improve the mechanical properties of the casting. Alloy Al6063 is heated to a temperature of 790°C to reach a complete liquid state. Then the temperature is lowered to 645°C, then the Si element is inserted into the heating furnace and stirred. Then the temperature is lowered to 615°C, then the Mg element is added, then stirred thoroughly by a mechanical stirrer. The rotational speed of the stirrer is 70 rpm and the stirring time is 240 seconds. Then heated to a pouring temperature of 670°C. The mold is heated to a temperature of 265°C. Then poured into the mold and pressed 7 MPa. After that, it was allowed to stand for 600 seconds, and then removed from the mould. The cast propeller shaft is cooled at room temperature. Then the propeller shaft was heat treated with a solution treatment temperature of 485°C for 3600 seconds and then quenched using a fluid. After that, the casting products were treated with artificial aging. The results of the study are, Porosity will decrease along with the addition of Silicon elements. The lowest porosity level is in addition of 3% wt Silicon that is equal to 1.15%. Tensile test with the addition of 1% wt Silicon ie, 106.882 MPa, in addition of 2% wt Silicon that is, 128.713 MPa, and in addition of 3% wt Silicon ie 132.668 MPa. So the highest tensile stress value is at 3% wt. Hardness values will increase with the addition of Silicon elements. The highest hardness value found in the variation of 3% wt Silicon ie, 69.9 HB. While in the variation (0, 1, 2% wt) that is, 43.75 HB, 51.24 HB and 56.45 HB. So this study, proving that the addition of silicon elements can improve the mechanical properties of the shaft propeller.
Fatigue Strength of Rotary Bending Copper Materials N Talango; S Ishak; NS Dera; W Rauf
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

Non-ferrous metal is a type of metal that does not contain iron (Fe). Pure non-ferrous metals do not need alloying elements because of their chemical resistance and good electrical conductivity. The non-ferrous metal in question is copper. Almost every human need can’t be separated from the element of copper as a supporting material. In the industrial world, copper has an important role because many factory machinery construction utilizes this material. Copper is a material that conducts heat and electricity quite well and has smooth and soft properties. The durability of copper-based structures can be carried out by fatigue tests (fatigue). This study aims to analyze the fatigue strength of copper material with rotary bending type. The test was carried out on copper material without heat treatment. At each loading, the test was carried out five times on different test specimens (Sp1, Sp2, Sp3, Sp4, and Sp5) with variations in the load determined at 15 kg, 17 kg, and 19 kg. Preparation of test specimens using a lathe and photos of micro and macro structures using a microscope. While the fatigue test was carried out using a rotary bending type fatigue test machine. The results of microstructure observations for all loadings showed that the specimens had soft properties. Meanwhile, the observation of the macro structure shows that the specimen has brittle properties. The results of the fatigue test show that the flexural stresses for each load of 15 kg, 17, kg, and 19 kg are written as 33 kg/mm2, 37 kg/mm2, and 42 kg/mm2, respectively.
The Application of Parabola of safety for Physics Problem Solving N Hasan
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

In this article we calculate the parabola safety and its application for some physics problems. Using equation of motion for projectile we find the Parabola of safety. Deriving the parabola of safety here we used zero descriminant of quadratic equation. Inside parabola safety is unsafe region from projectile.The application of the equation is presented for finding maksimum distance, minimum speed in some cases of problems.
Shipping Cost Optimization Using Least Cost and Stepping Stone Method at The Xender Brand Sandal Factory I Nugraha; YC Winursito; T P Sari
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

. The optimization model is one of the system analysis models identified with operation research. The transportation model determines the lowest cost for sending one item from several sources to several destinations as a collection of interconnected elements forming a single unit to integrate data, process, and store. Goods delivery transportation services are the use of software to provide services in the form of delivery of goods that are interrelated and structured to achieve a specific goal. The working principle of the Least cost method is to prioritize allocations with the most negligible unit cost (most minor cost per unit). This research was carried out using the Least Cost method so that companies can determine the optimal cost of shipping goods.
The Capstone Design of Hybrid Power Plant for the Renewable Energy in the Airport A Sadrina; M H B Satria; T P Sari; R D Issafira
BIOMEJ Vol. 3 No. 1 (2023): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

Currently, renewable energy sources are needed as a substitute for conventional energy sources because conventional energy sources will become decades in recent years. Renewable energy sources such as wind and solar have gained popularity and demand over the last decade. However, the output of this source depends on weather conditions. With these two sources, then we can produce the desired electric power. This project designs a hybrid power generation system model using wind and solar resources. This system can be implemented in areas around airports where large amounts of wind energy can be collected due to the high-speed movement of aircraft. At the same time, solar energy from the sun will also be collected. Eventually, the two energies will be collected simultaneously to charge the battery and be used for everyday life. The designed wind turbines are Savonius wind turbines which produce an average of 33.2-33.5 watts of electricity, and a Polycrystalline type solar panel with 200 WP.

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