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Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Published by Universitas Bengkulu
ISSN : 25974254     EISSN : 28292855     DOI : https://doi.org/10.33369/rekayasamekanika
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Rekayasa Mekanika is scientific journal on mechanical sciences and engineering field, either pure or inter disciplinary works. This journal is a continuation of Rekayasa Mekanik which changed its name since April 2022. This journal publishes 6 articles for each issue, April and October. Starting April 2025, this journal publishes 10 articles. Authors are cordially invited to submit his/her research, review or monograph papers in English or Indonesian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 95 Documents
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SISTEM HIDROLIK LOADING UNLOADING MEJA PELUNCUR Warsianto, Ardi; F. Alqap, A. Sofwan; zuliantoni; Hardiyanto, Martin
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2024): Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v8i2.38317

Abstract

Mortars have been developed in the field of weapons. One of the developments is the installation of a mortar on the rear of the vehicle platform which is equipped with a navigation system and combined with a computerized fire control system. To support this, a hydraulic system is needed. A hydraulic system is a form of changing or transferring power by using a conducting medium in the form of a liquid fluid to obtain greater power than the initial power released. The purpose of this practical work report is to find out how the hydraulic system works and find out the components used in the hydraulic system for loading and unloading mortar panzers. This research process starts from literature study, field observations, topic determination, data collection, results and discussion, conclusions. Based on this research, the results showed that the way the hydraulic system works, starts from the electric motor which turns on the pump, then the pump sucks the fluid in the tank, after that a fluid flow pressure is produced which then flows towards the valve, the valve will control the direction and pressure, fluid flow rate through the flexible pipe house to the working cylinder. Meanwhile, the components that make up the hydraulic system used are an electric motor with a speed of 1420 rpm, a pump with a power of 12 W and max. pressure 250 bar, manual pump, valve with max. operating pressure 210 bar and max. flow rate 63-100 L/min, flexible house pipe, fluid, pressure gauge, tank with a volume of 50 liters, filter, double acting hydraulic cylinder type accuator.
“EFFICIENCY ANALYSIS OF 3 DIFFERENT FUEL TOWARDS GASOLINE FUEL MOTORS ON EME 35 ENGINES IN LAPAN SURVELLANCE UAV-02 (LSU-02)” Ramadhan, M. Fajar; Bismantolo, Putra; Suryadi, Dedi; Utama, Agus Bayu
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2024): Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v8i2.38341

Abstract

This study aims to analyze the efficiency of three different types of fuel on the EME 35 engine on the LSU 02 aircraft. The fuel used is Pertalite, Pertamax, and Pertamax turbo. The method used in this study was an experiment using the LSU 02 aircraft as the research object. The data is taken from measurements of fuel consumption and engine performance on each type of fuel. The analysis is carried out by comparing the efficiency and performance of the engine on each type of fuel used. The results showed that the efficiency and performance of the engine on Pertamax fuel was better than that of Pertamax turbo and Pertalite. Fuel consumption on Pertamax is more efficient than Pertalite and Pertamax turbo, so that Pertamax is more efficient in fuel use. In addition, engines on Pertamax fuel have better performance with greater power and are more stable compared to Pertalite and Pertamax turbo. Therefore, it is recommended to use Pertamax fuel in the EME 35 engine on the LSU 02 aircraft to achieve better efficiency and performance.
ANALISIS TEKANAN HIDROLIK TERHADAP OIL LOSSES PADA MESIN PRESS KAPASITAS 15 TON Tarigan, Daniel Elieser; Zuliantoni; Bismantolo, Putra
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.38827

Abstract

In palm oil processing, there are five main stages: sterilization, threshing, digestion, pressing, and clarification. Among these, the pressing stage is one of the most critical. The pressing machine is used to separate crude oil from the fibers in the fruit pulp. This machine includes a pressing component, commonly referred to as the cone cage, which is operated by a hydraulic mechanism. The palm oil pressing process plays a crucial role in determining the success of processing fresh fruit bunches (FFB), as significant oil losses often occur during this stage. One of the key factors affecting these losses is the value of the hydraulic pressure. This study aims to investigate the effect of hydraulic pressure on oil losses in fibers for each pressing machine and to understand how the pressing machine operates. To analyze the hydraulic pressure variable and oil losses in fibers, observations were conducted by monitoring the pressure gauge on each pressing machine. The oil losses in fibers were measured through laboratory testing at the factory. The collected data were then compared. The results of this study indicate that hydraulic pressure has a significant effect on oil losses in the fibers of the pressing machine. At a hydraulic pressure of 49 bar, the smallest oil loss was recorded at 3.28%, whereas at a hydraulic pressure of 40 bar, the highest oil loss was observed at 4.42%. This demonstrates that higher hydraulic pressure results in lower oil losses, and vice versa.
DESAIN DASAR MESIN INJECTION MOLDING UNTUK PROSES CASTING SAMPEL PROPELAN PADAT MENGGUNAKAN SOFTWARE SOLIDWORKS Febriyanto, Ady; Supardi, Nurul Iman; Yulia Azatil Ismah
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.38986

Abstract

The injection molding machine for the solid propellant sample casting process is a tool for making a sample in the form of a solid propellant sample plate, this tool is designed to make work easier when carrying out the process of making solid propellant samples. The needs of the propellant industry in Indonesia are very large and important considering the need to develop solid propellant samples and munitions for the national arsenal, namely to promote and facilitate the exchange of technical information and programs. itself consists of two molds with sizes, namely 25cm diameter, 10cm high and 17cm diameter, 5cm high, frame, cember, hydraulic. The most important component in solid propellant sample injection molding is the solid propellant sample mold. Therefore, it must be strong and sturdy to hold the solid propellant sample so that it does not come out during printing with hydraulic pressure.The manufacture of solid propellant injection molding was assisted with Solidwork Software in this research.Keyword: Rocket, Propellant, injection molding.
PROSES PERLAKUAN PANAS UNTUK MELURUSKAN MATERIAL H- BEAM DENGAN METODE FIRING Ompusunggu, Ferdinand Lincoln; Puspawan, Angky; Hestiawan, Hendri
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.39015

Abstract

Welded beam is a profile obtained by welding 3 sheets of plate consisting of 2 flange plates and 1 web plate formed into an I-Beam or H-Beam profile. The welding process is carried out with a special SAW welding machine and continued with a straightening process because the heat from the welding causes the welded beam profile to bend or twist. Due to the heat during welding, there is a minimum welded beam size and the minimum plate thickness cannot be straightened again during the straightening process because the melting point of the material exceeds the limit during the welding process. Firing is the process of burning material at a certain temperature with the intention of improving the dimensions of the material. The purpose of this study is to straighten H-Beam steel. In carrying out the firing process using tools and materials such as the Huawei CG1-30 machine, chalk stamps, square rulers, nitrogen and gas and K3 equipment, in carrying out the firing process, checks are carried out using a square ruler and determining the burning point on the H-Beam steel, chalk stamps are used to measure the temperature in the firing process. The firing process has The conclusion of this study is that the heat treatment process (firing) can straighten H-Beam steel using the Huawei CG1-30 machine which has a speed of 50-750 mm/minute.
PROSES PRODUKSI AMBENG STOOL HIJAU SAGE BERBAHAN DASAR PLASTIK JENIS HDPE (High-density polyethylene) DI ROBRIES (PT. Siklus Karya Global) M. Daigo Gusnanda; F. Alqap, A. Sofwan; Hestiawan, Hendri
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.39286

Abstract

The manufacturing process is an activity or production process that transforms raw materials into finished goods. To accelerate production, the manufacturing process utilizes modern equipment such as machines and implements structured programs to carry out production. The purpose of this internship is to understand the procedures for making the sage green Hambeng Stool, determine the optimal plastic melting time, and identify the factors influencing product defects at Robries. Raw materials are modified through manufacturing processes to form the necessary components. To produce the desired product, several stages must be followed. In its production, the manufacturing process requires machining stages. The manufacturing process begins with designing the product and determining the material specifications for the product. The methods used in this research include literature review, observation, and interviews. This is because the desired product cannot be produced through a single machining process. The production process at ROBRIES complies with the standard operating procedures (SOP), starting with material selection, material melting, material sanding, and finishing.
DESAIN DAN SIMULASI KEGAGALAN STIK MANDRIL ROKET RX-100 PADA PROSES DECORING MENGGUNAKAN SOFTWARE SOLIDWORK Setiawan, Ahmad Yudi; Supardi, Nurul Iman; Ismah, Yulia Azatil
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2024): Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v8i2.39390

Abstract

The substances used in rocket propellant have the ability to produce molecular gas at very high pressure and temperature during combustion. This material has great energy, and can explode so it is widely used in firearms, explosives and rockets. During the process of making rocket propellant, there is a process, namely the decorating process, which is the process of withdrawing the mandril stick from the propellant mold tube. The mandril stick is a component found at the end of the mandril itself, used as a link between the electric pulley and the mandril which is useful for pulling the mandril out of the mold tube, so that the propellant forms grains according to the mandril that has been printed in the propellant mold tube. The manufacture of mandril sticks is assisted by Solidwork software. In this research, a simulation was carried out on the mandril stick in order to determine the distribution of von Mises stress, displacement, and safety of factors on the RX-100 rocket mandril stick.
PERFORMA POMPA SEKUNDER PADA SISTEM PENDINGIN REAKTOR NUKLIR Anugrah, Dwi Permana; Nuramal, Agus; Puspawan, Angky; Falah, Sabilul
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2024): Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v8i2.39461

Abstract

Secondary pump in the reactor nuclear works move fluid in the reactor with take hot from system primary coolant and discard it to environment. For support safety reactor nuclear this need done study to performance pumps secondary being one​​ system cooler reactor. Methodology study consists from studies literature, observation field, and data collection. Pump used as pump secondary to the system cooler Reactor nuclear This is centrifugal water pump with rate Genre volumetric 4500 liters/ minute with capacity adjustable water flow with characteristics heat exchanger. From the results calculation of data taken on three different day​show mark increased efficiency due to rising mark WP. This matter proves that mark WP on pump system cooler secondary reactor nuclear influence mark efficiency from pump secondary used.​ For mark efficiency highest there at 11:00 with​mark amounting to 18.288%.
DESAIN DAN PEMBUATAN HAND LOADER OUTPUT DENGAN MENGGUNAKAN SOFTWARE SOLIDWORKS Yueprayuga, Abie; Puspawan, Angky; Nuramal, Agus; Hadi Susanto, Tri Nugroho
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.39474

Abstract

The design of this output hand loader aims to be a place to receive samples that have passed testing in order to improve ergonomics during the irradiation sampling process by utilizing existing materials (acrylic). The hand loader output testing method is by calculating the travel time for empty capsules and capsules containing five variations of samples when sent from the pneumatic lab to the AAN lab, and followed by testing the functional integrity of the capsules when transferred. The results show that the travel time required for the capsule to reach the hand loader is 2 seconds and the capsule is not damaged, broken or other defects. The conclusions obtained from the design of the output hand loader were the design and use of acrylic material that did not damage the capsules during testing and improved ergonomics during the sampling process compared to the previous sampling site. Apart from that, the problem when making an output hand loader lies in making bolt holes that are not parallel to other parts, which requires making new holes.
DESAIN DAN SIMULASI PEMBEBANAN STATIK SASIS KENDARAAN LISTRIK OTONOM TANPA KEMUDI UNTUK INDIVIDUAL MOBILITY MENGGUNAKAN SOFTWARE SOLIDWORK ricky, 240103; Witanto, Yovan; Supardi, Nurul Iman; Syabanda, Yukhi Mustaqim Kusuma
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2024): Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v8i2.39520

Abstract

The chassis or frame is the internal framework that serves as the basis for producing an object, supporting parts such as the engine or electronic components of the object. The chassis can be likened to the skeletal structure of animals.Electric cars are vehicles powered by electrical energy stored in batteries or other energy storage devices. Electric cars were very popular in the late 19th and early 20th centuries, but their popularity waned due to advancements in internal combustion engine technology and the decreasing cost of gasoline-powered vehicles. SolidWorks is a software application based on automation for creating 3D solid models to explore the use of Windows graphics. Using this software is not very difficult, depending on the user's willingness as an engineer to learn it. This software is highly useful in engineering for creating both 3D and 2D models. Additionally, SolidWorks can perform simulations that are highly beneficial for conducting research on machines or materials.

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