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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 25 Documents
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Search results for , issue "Vol 11, No 3 (2020)" : 25 Documents clear
Pengaruh Penggunaan Cairan Pendingin (Coolant) terhadap Keausan Pahat Bubut HSS Widiyawati, Sri; Novareza, Oyong; Sulistyarini, Dwi Hadi; Putro, Wisnu Wijayanto
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.19

Abstract

Lathe Machine can use for several kinds of the process such as turning, drilling, boring, tapering, and threading. The lathe machine process requires some interaction between processing material with the chisel. Time processing that reaches the worn-out limit is likely called chisel life. One of the factors that affected chisel worn-out is the use of coolant. Therefore researched the effect of one of the variable process that is coolant to HSS Carbide worn-out chisel to predict the lifetime of it. This research was conducted three times without using a coolant, using a coolant ratio of 1:30, and using a coolant ratio of 1:40. The spindle speed of the lathe used is 400 rpm. The tool wear was analyzed through measurement with callipers and the help of CorelDraw X7 software. Based on the measurements made, the results showed that the highest tool wear was found in HSS chisels with 1:40 coolant application, which was a reduction of 1.4 mm.
Pemanfaatan Kotoran Ternak sebagai Energi Terbarukan Melalui Pembangunan Biodigester Komunal Meidiana, Christia; Perdanasari, Zhuniart Ayu; Dinanti, Dian
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.10

Abstract

The potentials of energy from manure waste was calculated in this study aiming to develop biogas utilization in a rural area. The calculation was conducted based on the result from clustering the non-biogas farmer households which cannot afford individual anaerobic digester (AD). Spatial cluster analysis (SCA) and superimposed technique were used to determine the size of the groups and the location of ADs respectively. Value from SCA showed that the village’s settlement pattern is clustered feasible to apply communal AD for rural biogas development. Meanwhile, a superimposed technique using 3 parameters which are land availability, cow ownership, and topography, generates 43 clusters of farmer households that can supply biogas for cooking. The energy production is estimated at 8.96-39.68 m3/day/household, while the energy demand is approximately 0.65-3.48 m3/day/household. The calculation shows that there is remaining biogas that can be distributed to non-biogas farmer households. Using SCA, 75 non-biogas farmer households were identified to be potentially supplied by biogas. The total energy demand for both biogas and non-biogas farmers households is 2,147.34 MJ/day, while the total potential energy generation from all ADs is 24,560.64 MJ/day indicating a low biogas utilization rate which is only 8.7%. The percentage shows that biogas utilization for an energy source in Dusun Dresel can be more developed by enhancing the distribution network or by converting it into electricity to support rural energy security.
Mekanisme Pembentukan Burr pada Pemesinan Frais Mikro Ti 6Al- 4V ELI dalam Keadaan Kering Saputra, Endra; Ibrahim, Gusri Akhyar; Harun, Suryadiwansa; Supriyadi, Eko Agus; Patihawa, Armulani
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.1

Abstract

One of the ingredients that are popular now is titanium, but titanium is a material that is difficult to process using conventional milling machining because of the poor thermal conductivity of the material so that the high-temperature machining process produced in the cutting zone causes plastic deformation in cutting tools and increased chemical reactivity in titanium. High-speed micro-milling machining can be used for micromachining of hard metals or alloys that are difficult to achieve at low speeds. Micro milling machining in titanium material 6Al-4V ELI with variations in milling knife diameter 1 and 2 mm, spindle speed 10.000 and 15.000 rpm, feed 0,001 and 0,005 mm / rev, depth of cut 100 and 150 μm, which then do data processing using the method Taguchi full factorial and theoretical analysis. The results showed that the diameter of the tool and into the cut had the greatest effect on burr formation, the greater the diameter of the milling blade resulted in the formation of shorter and smaller burrs, the use of a 1 mm diameter milling blade and a 150 μm depth cut gave rise to long burr formations and tight, while the use of a 2 mm diameter milling blade and a cutting depth of 100 μm give rise to a short and slight burr formation.
Pengaruh Variasi Arah Aliran Udara pada Stove terhadap Karak-teristik Pembakaran Wood Pellet Yuliati, Lilis; Simanungkalit, David
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.24

Abstract

This research was conducted to investigate the effect of inlet airflow direction on the combustion characteristics of a wood pellet stove. The direction of the airflow into the wood pellet stove is varied for four methods, namely inlet I, inlet II, inlet III, and inlet IV. At inlets, I, II, and III air is injected into the plenum in the radial direction with the injection points at r = -8, 0, and 8 cm respectively, whereas at inlet IV the direction of airflow into the plenum is in the axial direction with the injection point at r = 0. The combustion characteristics were observed in the wood pellet stove with a continuous fuel feeding system. The combustion characteristics investigated in this research consist of flame visualization, flame temperature, combustion rate, and the efficiency of the wood pellet stove. The results showed that wood pellet stoves with inlet IV had a lower combustion rate and flame height, however, this stove indicates a higher flame temperature and stove efficiency. Air entrance through the inlet IV induces most of the airflow to enter the combustion chamber through the primary channel, compared to that through the secondary and tertiary channels. The primary airflow through the wood pellet encourages a better devolatilization and combustion process. These conditions conduce the flame dimension which is a zone where the combustion reaction occurs is smaller with a higher flame temperature, due to higher volumetric heat release rate. This matter results in better heat transfer from the flame to the test fluid and higher stove efficiency.
Optimasi Parameter Desain Multi-Cell Hexagonal Crash Box terhadap Absorbsi Energy Impact dengan Metode Taguchi Rismanto, Muhammad; Choiron, Moch. Agus; Sugiono, Sugiono
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.15

Abstract

The crash box is a passive safety system placed between the bumper and the mainframe of the car that functions as an energy absorber to reduce the impact of driving accidents. The purpose of this study is to determine the optimal level of factors and analyze the factors that provide the most significant effect on energy absorption in a multi-cell hexagonal crash box. Identification of parameters that affect the crash box in energy absorption, namely: the position of placement hole (P), the distance of position hole (L), the thickness of crash box (t), and the hole diameter (D). The modeling method has used the design of the crash box by utilizing a computer simulation with software ANSYS 17.0. This research uses aluminum material type AA 6061-T4 and impactor material uses structural steel. Modeling loading using the frontal crash test method. In this modeling, the impactor with a speed of 7.67 m/s with a deformation length of 100 mm. This research uses the experimental design of the Taguchi method with the L27 orthogonal array. The optimization result were obtained optimum design parameter multi-cell hexagonal crash box with parameter settings P = inner wall; L = 112.5 mm; t = 2 mm, and D = 6.6 mm. Based on the calculated F value ≥ F Table, the factors P, t, and D affect the ability to absorb energy. Thickness crash box (t) has the highest contribution of 98.10% in increasing the value of energy absorption.

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