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Redaksi Jurnal Rekayasa Mesin Jurusan Teknik Mesin Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang, Jawa Timur Indonesia 65145
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Kota malang,
Jawa timur
INDONESIA
Rekayasa Mesin
Published by Universitas Brawijaya
ISSN : 23381663     EISSN : 24776041     DOI : 10.21776/ub.jrm
Core Subject : Engineering,
Mechanical Engineering
Rekayasa Mesin is published by Mechanical Engineering Department, Faculty of Engineering, Brawijaya, Malang-East Java-Indonesia. Rekayasa Mesin is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. Rekayasa Mesin accepts submission from all over the world, especially from Indonesia. Rekayasa Mesin aims to provide a forum for national and international academicians, researchers and practitioners on mechanical engineering to publish the original articles. All accepted articles will be published and will be freely available to all readers with worldwide visibility and coverage. The scope of Rekayasa Mesin are the specific topics issues in mechanical engineering such as design, energy conversion, manufacture, and metallurgy. All articles submitted to this journal can be written in Bahasa and English Language.
Arjuna Subject : -
Articles 965 Documents
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ANALISIS KEKUATAN STRUKTUR SQUARE CHAMBER INJECTION MULTICASTING PYROGENIC IGNITER MENGGUNAKAN FINITE ELEMENT ANALYSIS (FEA) Prayoga, Rama Dwi; Prasetyo, Ichsan Dwi; Mahdiyyah, Maharani Inas
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1726

Abstract

It is necessary to analyze the structural strength of the square chamber component in the design of injection multicasting pyrogenic igniter to ensure that the structural components of the chamber are able to withstand loads from hydraulic piston pressure. Four square chamber configurations were analyzed using the Autodesk Inventor software FEA method. Load simulations are given at 10,000 N, 50,000 N, and 100,000 N. Von Mises stress, safety factor, and displacement are obtained for each design configuration. Where it is known that the structural design of the square chamber design configurations 1, 2, and 3 has optimal reliability at a load capacity of up to ± 10,000 N. As for the structural design of the square chamber design configuration 4, it is known to have optimal reliability at a load capacity of 50,000 N. However it is possible that it is reliable enough to withstand load capacities up to ± 100,000 N.
MINIMALISASI MINIMUM ZONE CIRCLE MENGGUNAKAN METODE STATIONARY POINT Oktriadi, Yudi; Saputra, Anggi; Kurniawan, Zaldy; Wahyudie, Ilham Ary
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1727

Abstract

The success of the manufacturing world in improving production processes is greatly influenced by the machine equipment used. SKD-11 steel has high wear resistance and good ductility, so it is suitable for components that require high precision and durability. Surface Response Method (RSM) Box-Behnken Design can be used in the optimization process, which has three variables that can predict the best optimum value. The roundness variable used in this research is MZC (Minimum Zone Circle), whose non-roundness value is the difference between the radius of the most extensive circle profile and the smallest circle profile, MZC. From the test results, it was found that the smallest non-sphericity was 7.5 μm. The optimal value for this test is VC 234.784 m/minute, feeding 0.127 mm/rev and depth of cut 0.18 mm, and the predicted response value is 13.05 μm. From the results of the ANOVA analysis, these three factors have no effect on roundness, but there is one factor that almost influences roundness, namely the depth of cut.
RANCANGAN SISTEM HIDROLIK PADA FRONT ATTACHMENT ALAT PERAGA MINI EXCAVATOR Purwanto , Sigit; Aisyah , Nyayu; Prihadianto, Braam Delfian; Krisnaputra , Radhian; Wismo , F. Eko; Bahiuddin , Irfan
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1729

Abstract

As one of the heavy equipment, an excavator is used to facilitate construction work and streamline time and energy. Hydraulic excavators are widely used in construction, mining, quarrying, and forestry applications. A hydraulic excavator is a type of heavy equipment that has several functions such as digging, loading, lifting, scraping, grading, braking, etc. One of the products which is developed by the Mechanical Engineering Department of Vocational School (SV-UGM) is the Mini Excavator. Mini Excavator has a function as excavators in general. A smaller size makes it easier to operate and apply in the field are more compact and do not require a large area. This equipment is expected to be the right teaching aid in supporting the learning process of students of the Heavy Equipment Management and Maintenance Engineering Study Program in the Mechanical Engineering Department. For the learning process to be optimal, the equipment used should be optimal. Therefore, in this research, the design and construction of the Traction Drive System for Backhoe Type Hydraulic Excavators will be carried out and some testing will also be conducted to know the performance of the mini excavator
KINERJA PROTOTIPE RODA PENGGERAK BERSIRIP GANDA PADA LAHAN SAWAH GAMBUT Susanto, Herdi; Darsan, Herri; Jayadi, Farid; Masykur, Masykur; Husin, Zakir; Ali , Syurkarni
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1733

Abstract

Agricultural technology to support the agricultural sector, especially peaty paddy fields, should be developed, because peat land with a thickness of less than one meter has been recommended for rice crops. supported by a potential peatland area of ​​up to 21 million Ha or 10.8% of Indonesia's land area. Currently, peatland farming communities use sickles to harvest rice and hoes to cultivate the land. So far, hand tractor finned wheel drive technology has been widely used for cultivating wet paddy fields, whereas in conditions of peaty paddy fields it has not been able to be used because of the high level of sinkage and wheel slip, for this reason a new model of wheel is needed that is capable of working in peaty paddy fields. The aim of the research is firstly to find the right model of driving wheel for use in peaty paddy fields, secondly a prototype driving wheel for peaty paddy fields, and thirdly to experimentally test the driving wheel. Research results (1) prototype with a driving wheel diameter of 35 cm and the number of fins is 8 for the standard fin type and for the double fin type the driving wheel diameter is 40 cm with 4 vertical arc fins, which are placed on the surface of the driving wheel. (2) Comparison with the same type of loading shows that the double fin type drive wheel has a relatively smaller level of wheel loading (around 20%) when compared to the standard type drive wheel. (3) The sinkage level of the standard type drive wheel has a smaller sinkage (around 10%) compared to the double finned wheel type, in tests with the same type of loading. test loads for wheels are 20 kg, 40 kg and 60 kg. The double fin type drive wheel is good for use in peaty paddy fields.
PENGARUH INTERLAYER PASTA (ZINC+TAPIOKA) PADA SAMBUNGAN FSSW MATERIAL ALUMUNIUM PADUAN Saputra, Lingga Arti
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1740

Abstract

Aluminum metal is widely applied in the industrial sector because it has many advantages. FSSW welding is a method that can be used to join aluminum. The microstructural test results show the flow distribution of the zinc interlayer in the welding area. The flow of zinc material looks dominant in the steering zone area. The hardness test results for the connection with zinc interlayer had the highest value of 147HV. Highest shear tensile testing on joints using zinc interlayer. The use of zinc interlayer has been proven to significantly improve connection capabilities.
GREENHOUSE SYSTEM WITH FORCED AIR FLOW FOR PRE-DISTILLED KAFFIR (CITRUS HYSTRIX) LEAF TREATMENT Cahyani , Chandrawati; Nurhadianty, Vivi; Sarosa, Aji Hendra; Muttaqin, Moch Fitron; Hidayat, Fahrul Huzain; Sarumpaet, Dicky Gabriel Partogi; Safitri , Mellyantika Alga; Miranti , Thiara Jatayuning; Rifdah, Naufaliyah Rifdah
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1741

Abstract

The greenhouse effect, which is a global issue, can provide benefits in the agricultural sector, especially in the processing of essential oils, which require drying raw materials before being purified. This is necessary to increase process efficiency, one of which is processing kaffir lime leaves. Drying is generally done in a simple way, but it has problems such as high-water content (approximately 15%), unstable weather, and slow drying speeds that cause leaf damage and fungus affecting essential oil quality. The solution is to utilize suitable technology, such as a greenhouse system. The study compares greenhouse drying methods with forced airflow and open sun drying, focusing on moisture content. The moisture content was measured using a moisture balance at each drying time. The result is that Greenhouse Force Circulation (GFC) drying effectively decreases kaffir lime leaves' moisture compared to Open Sun Drying (OSD), as evidenced by its higher drying rate.
KARAKTERISTIK SISTEM GASIFIKASI TYPE DOWDRAFT GASIFIER BERBAHAN BAKAR BIOMASSA BERDASARKAN VARIASI VOLUME RUANG BAKAR Elfiano, Eddy; Suripto, Heri; Hastuti, Kurnia; Arizona, Rafil; Lihantoro, Bayu
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1742

Abstract

This research aims to investigate the attributes of a Downdraft Gasifier gasification system that employs biomass fuel and features varying combustion chamber capacities. The primary focus is on examining how alterations in combustion chamber volumes affect gasification characteristics. Analytical techniques that hinge on these discrepancies in combustion chamber capacities yield a comprehensive understanding of efficiency, thermal functionality, and gas discharges. The outcomes suggest that the gasification setup furnishes adequate thermal energy for highly efficient catfish drying. Additionally, the application of gasification diminishes noxious discharges from the exhaust, thereby establishing a more eco-friendly technology. The most efficient utilization of energy is apparent in rice husks, accounting for operational duration, steam generation, and assessments of performance parameters. As per gas emission analyses, wood powder demonstrates reduced emissions compared to rice husks, particularly concerning CO2, CO, SO2, NO, and NOX emissions throughout the gasification process.
KINERJA SISTIM HIDROLIK PADA UNIT EXCAVATOR 320D2 CATERPILLAR Halim , Abdul; Fadli , Ma’arif; Mangkona , Mangkona
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1756

Abstract

Almost most heavy equipment units use a hydraulic system, including systems that are important for heavy equipment units to work. The hydraulic performance test on the excavator unit is part of the test carried out as an operational standard to state that the unit is good to run or operate in work in the field. So to know that the unit has good availability, it is necessary to carry out regular testing according to service guidelines. This research aims to provide information regarding standard operational procedures for testing hydraulic excavator performance, both cycle time and pressure on directional control valves. The method used is to carry out tests on hydraulic implements using a combination of system information services. In experimental testing, the cycle time for the movement of hydraulic implements, including boom, bucket, stick, swing, and travel, still complies with standard specifications. For testing, pilot relief valve pressure, main relief valve pressure, and swing pressure are all still within normal standard limits.
DETERMINATION OF PROCESS PARAMETER FOR INJECTION MOLDING : A REVIEW Arifin, Muhammad Alfattah; Pranoto, Hadi
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1758

Abstract

One of the most suitable methods for mass production of complicated shapes is injection molding due to its superior production speed and quality. Plastic injection is the process of forming products from plastic materials with variations in shape and size. Controlling the quality of plastic products is an important aspect of the plastic injection molding process. To achieve high process effectiveness and desired product quality, correct and precise parameter settings are essential. One of the benchmarks for assessing the productivity and efficiency of an industry is to look at the level of product defects that occur in producing a product. This article aims to provide a brief review of the explanation of injection molding, types of molding, types of injection failure, experimental methods in determining injection molding parameters. Types of failure in the injection process such as short shot, weld mark, warpage, sink mark, air trap, black spot, flashing, hole, over molding, delamination. The experimental method determines parameters such as the Taguchi method, ANOVA method, hard computing techniques. The future will likely tend to use AI techniques as has happened with other methods in manufacturing processes to complement conventional techniques in determining injection molding process parameters.
DINAMIKA DAN NYALA API PEMBAKARAN DROPLET CAMPURAN METIL LAURAT – METIL OLEAT Yuliati, Lilis; Hamidi , Nurkholis; Lazuardi, Muhamad Luthfi
Jurnal Rekayasa Mesin Vol. 14 No. 3 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i3.1764

Abstract

This research intended to investigate the dynamics and flame of the droplet combustion of methyl laurate - methyl oleate blended. Methyl oleate is an unsaturated FAME with a relatively long carbon chain, frequently found as the dominant component in various biodiesel. Meanwhile, methyl laurate is a saturated FAME with a shorter carbon chain, which is the main component in coconut oil biodiesel. The methyl oleate content in the droplets was varied by 0, 20, 40, 60, 80, and 100%. Visual observations and temperature measurements were conducted on the combustion of suspended droplets with a diameter of 1.24 mm. The droplet is supported by a thermocouple junction with a wire diameter of 0.1 mm. The experimental results show that increasing of the methyl oleate content increase the ignition delay time, burning time, thermal expansion of droplets as well as fluctuations in droplet diameter and combustion temperature. Ignition delay time has a much greater value than burning time. This parameter should be suppressed to obtain more complete combustion and cleaner exhaust emissions, especially in internal compression engine applications where the time available for the combustion process is very short. This can be obtained by increasing the percentage of methyl laurate in biodiesel.

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