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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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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 15 Documents
 1   2 
Search results for , issue "Vol 11, No 1 (2020)" : 15 Documents clear
Rancang Bangun dan Uji Performa Sistem Kendali Pemberian Fluida Permesinan MQL Berbasis Arduino Dinata, Gerry Gardika Surya; Muttaqin, Aris Zainul; Darsin, Mahros
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.11

Abstract

In machining  excessive use of cutting fluid can have a negative impact to the  enviroment. An alternative to overcome this problem is by using the minimum quantity lubrication method (MQL). In MQL method the cutting fluid is flowed by compressed  air. This research aim to design and implement an Arduino-based controller for further minimize the use of cutting fluid in MQL system. It was programmed that the pump would only work when the tool temperature beyond 70 oC and vice versa. Observation shows that the controller work accordingly. Other experiments were carried out to check the fluid consumption with Taguchi method. It was proof that applying the controller was able to reduce the fluid consumption.
[Retracted] Investigasi Simulasi Numeris dan Eksperimen Proses Springback Berbentuk Cup Silinder pada Lembaran Baja Karbon SPCC Mulyanto, Bambang; Khaerudini, Deni S.
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.2

Abstract

THIS ARTICLE HAS BEEN RETRACTED UNDER THE AUTHOR'S REQUEST BECAUSE IT WAS PUBLISHED IN ANOTHER JOURNAL.The sheet metal forming (SMF) process is one of the manufacturing processes that essential and commonly used in the automotive industry. Compared with casting and forging, forming process into the metal sheet obtain several advantages, including lightweight materials and variations in shapes that can be made. One of the challenges in the SMF process is the springback phenomenon, which can cause a deviation in the size of sheet products. The springback occurs due to the reverse force phenomena due to the effect of its elasticity of sheet carbon steel material that has to experience the formation process. Ironing of SPCC sheet metal with a thickness of 0.8 and 1.0 mm is carried out in a pressure of 2.9 MPa with die velocity 60 mm/sec. The experimental data that carried out with a single die on the Cup Silinder sample test showed that the lower the value of ironing, the higher the value of the springback material. Therefore, the springback phenomenon can be reduced 0.03 to 0.07 mm by engineering the ironing process with a range of 0.15 mm
THE INFLUENCE OF IRON CONCENTRATION ON THE MECHANICAL PROPERTIES OF A356 AL ALLOY FOR CAR RIMS APPLICATION Risonarta, Victor Yuardi; Anggono, Juliana; Aditya, Geraldi Raka
Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.7

Abstract

A356.0 aluminum-silicon alloy is a base material for car rims application. Car rims are critical components for a vehicle as they carry the load of the passengers, goods, and the weight of the vehicle itself, therefore they should be sufficiently strong to withstand the vertical load, fatigue load, impact load, the side load and the braking force. Car rims are made by gravity die casting process. During the casting process, the inclusion of iron-content parts entering the molten Al can take place which leads to higher iron (Fe) concentration. High Fe con concentration lowers the toughness and the ductility of car rims. This study investigates the maximum value of Fe concentration that can be tolerated for acceptable mechanical properties of Al-Si alloy A356.0 for car rims application. The Fe concentration studied was 0.12 %wt, 0.16 %wt, and 0.20 %wt. Evaluation was performed on tensile and impact properties of the specimens. The test results show that increased Fe concentration decreases elongation, yield strength and ultimate tensile strength (UTS). Furthermore, there is a quite large decrease in UTS (by 34 MPa) when Fe concentration increases only by 0.06 %wt.  Impact strength decreases significantly from 15.47 to 2.91J/cm2 as Fe concentration content increases from 0.12 %wt. to 0.16 %wt. The porosity present in the casting is predicted to contribute to the ductility decrease. In addition, the decreasing value of UTS is predicted due to grain growth and dendrites formation. It is recommended that the maximum allowable Fe concentration for car rims application is 0.12 %wt.
PENJADWALAN PERAWATAN DENGAN METODE CAMPBELL DUDEL SMITH (CDS) UNTUK MENINGKATKAN PRODUKSI MESIN RECYCLE WASTE TEMBAKAU Anggara, Teuku; Pratikto, Pratikto; Sonief, Achmad As?ad
Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.12

Abstract

The Campbell Dudek Smith (CDS) method is commonly used by large companies to help them make Flowshop schedules. The purpose of this study is to design a more effective maintenance scheduling sequence in order to increase the amount of production with the most efficient use of time without having to stop production and be able to calculate the productivity of the machine it self. Partial Productivity (PP) analysis is used to determine the level of machine productivity by proving Partial Productivity (PP) after is better than Partial Productivity (PP) before. This research was conducted at PT. X, one of the leading national companies in producing cigarette products such as SKT cigarettes, SKM and SPM. As a result, this study has performed calculations using the Campbell Dudek Smith (CDS) algorithm and calculates the productivity of each iteration using Partial Productivity (PP). The recommended improvement of the engine maintenance scheduling sequence is by applying the scheduling sequence to the 5th iteration, J2-J4-J3-J1-J5.
DESAIN DAN PEMBUATAN ALAT MONITORING KERUSAKAN MESIN BERDASARKAN LEVEL GETARAN Suryadi, Dedi; Pratama, M. Dicky
Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.3

Abstract

In industry, vibration frequently occurs on rotating machines. In case of vibration level, it can cause damage to machines. Therefore vibration level should be continuously checked by using a predictive maintenance method in order to prevent the severe fault. In this study, a vibration monitoring tool with short message service (SMS) will be manufactured. This tool consists of a vibration sensor, controller, data acquisition, and provides both monitoring and warning systems in a remote area. An accelerometer is used as a vibration sensor placing on a bearing housing. Here, a designed tool is applied to machines with several conditions, namely normal, unbalance, and mechanical looseness. The rotational speed of the motor is varied at 1000 rpm, 1500 rpm, and 2000 rpm. Moreover, the warning system will be active by sending SMS to the operator when the vibration level is higher than one of ISO 2372. Validation is done by comparing the designed tool and standard tool. Finally, the results show that the designed tool can be effectively used for vibration measurement because it has an error of less than 3.5%, and the warning system through SMS is also running well with a delivery time of fewer than 5.5 seconds.

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