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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.
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Articles 7 Documents
 1 
Search results for , issue "Vol 7, No 3 (2016)" : 7 Documents clear
Pengaruh Tekanan Vacuum terhadap Kekuatan Tarik dan Kekuatan Lentur pada Biokomposit Serat Purun Tikus (Eleocharis Dulcis) Fauzi, Yusuf Rizal; Sonief, Achmad As’ad; Suprapto, Wahyono
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.806 KB) | DOI: 10.21776/ub.jrm.2016.007.03.4

Abstract

In particular composite materials made from polymer biocomposite material which is now becoming an alternative to the metal and is very widely applied in the manufacturing industry because of its corrosion resistance and high strength ratio of specific gravity. Natural fiber began to be used for reinforcement in composites instead of synthetic fiber such as glass fiber because of its environmental friendly and widely available in nature. Meanwhile, the application of the natural fiber is still not optimized. The method to produced the composite is by isolate and vacuuming mold composite specimens (biocomposites) in a container (the media) to reduce the pressure around, so that the composite (biocomposite) is not in direct contact with the air, void in composite can decrease the strength of the composite. The matrix is 157 BTQN Polyester and the catalis is MEKPO with concentration of 1%. Specimens have been tested mechanically those are tensile testing and flexure testing and the specimen was evaluated using SEM and fracture was observe using macro photos. The results showed that there are significant effect of vacuum pressure level to the biocomposite tensile strength and flexural strength. Specimens with angular orientation 0/90/0/90 shows the tensile strength of 54.7 MPa and bending strength of 243 MPa.
Pengaruh Ukuran Butir Pasir Besi dan Volume Air Laut pada Absorber Type Fins Solar Destilation terhadap Produktifitas Air Tawar Anggara, Mietra; Widhiyanuriyawan, Denny; Sasongko, Mega Nur
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.26 KB) | DOI: 10.21776/ub.jrm.2016.007.03.5

Abstract

The needs of clean water is especially increased for the living in coastal. Because of that, a simple equipment and low cost operation is needed. Distillation is a method to convert sea water to fresh water by using solar energy. Various research on absorbent plate solar still has been done to increase productivity and efficiency of distillation. In the study, fins absorbent plate was tested with iron ore grain size variation of 0,125 cm, 0,250 cm and flat absorbent plate with iron ore grain size variation of 0,125 cm. The volume of salt water in the basin is also varied of 1, 2, and 4 liters. The results shown that the fin absorbent plate with iron ore size of 0.125 cm and the volume of 1 liter have the highest freshwater productivity and efficiency of 3,7 l/m day and53,55%, respectively. The daily sun radiation of 16,071 MJ/m .day. The quality of resulted fresh water has fulfilled the standard for drinking water, hence it is consumable.
Perbaikan Layout Mesin Produksi Longsong Munisi menggunakan Metode Systematic Layout Planning dan Blocplan (Studi Kasus : Divisi Munisi - PT. Pindad (Persero)) Kustriyanto, Eddy; Pambuditama, Ishardita; Irawan, Yudy Surya
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (774.775 KB) | DOI: 10.21776/ub.jrm.2016.007.03.1

Abstract

Layout of the existing machines using cell system has been applied since 2005 and the machine operators have known the weaknesses, so it is necessary to improve the layout of the machines. This study was conducted to improve  the machines layout cartridge case production by using Systematic Layout Planning and Blocplan with quantitative and qualitative considerations. The qualitative considerations are working ergonomies, while the quantitative considerations are the distance of product routing between one process with the next process and backtracking from product flow between workstations with another. A qualitative assessmen tends to be based on subjective considerations of each department facitity. Blocplan was the simple and practical method used in the settlement of this problem. Blocplan changed the layout by calculating the minimum total distance traversed in the movement of the materials between workstations. The application of Systematic Layout Planning methods and Blocplan in improving the layout and shortening production time in Hall OP decrease of product displacement distance is 26.77 meters (13.50%) i.e.: before the improvement  was 198.36 meters, after improvement is 171.59 meters. Relayouting of the cell for improving the groups in the type of process and the machines also creates a higher state of comfortable working condition.
Pengaruh Ball Peening terhadap Kekerasan Baja Tahan Karat AISI 316L Widodo, Teguh Dwi; Raharjo, Rudianto
Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.929 KB) | DOI: 10.21776/ub.jrm.2016.007.03.7

Abstract

In this work, ball peening was performed in order to evaluate its effect on the AISI 316L hardness. The process was conducted by employing AISI E52100 Chrome Steel ball which has hardness 752 HVN as bomber. In this research ball peening process was performed at three different nozzle pressure (6, 7, and 8 bar) for 5 minutes. Vickers Micro Hardness Tester and Digital Optical Microscope was used to characterize the samples hardness and grains structure respectively. The results showed that the hardness of AISI 316L was improved. It may due to plastic deformation which toke places on its grains.
Analysis of Proton Conducting SOFC–Micro Gas Turbine Hybrid System with Anode and Cathode Recycling and Fueled by Ethanol Sasmoko, Sasmoko; Tseng, Chung-Jen; Wijayanti, Widya
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1775.569 KB) | DOI: 10.21776/ub.jrm.2016.007.03.2

Abstract

This paper presents a hybrid system that consists of a pSOFC (proton conducting SOFC) stack, a micro gas turbine (MGT), a combustor, a compressor, a heat exchanger, and an external steam reformer. This simulation is based on thermodynamic analysis and is developed using Matlab/Simulink/Thermolib software and validated using published data from the literature. Furthermore, three cases, cases 1, 2, and 3, are analyzed, and the best case, case 2, is installed with anode and cathode recycling, to increase system performance. According to the results, case 2 exhibits the highest system efficiency (72%) due to high hydrogen production, and the installation of anode and cathode recycling further increases system efficiency up to 79%.
Aplikasi Serbuk Arang Tongkol Jagung dan Serbuk Cangkang Kerang Mutiara sebagai Media Carburizer Proses Pack Carburizing Baja Karbon Rendah Darmo, Sujita Darmo
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (97.645 KB) | DOI: 10.21776/ub.jrm.2016.007.03.6

Abstract

Carburizing process on low carbon stell can be done by using carburizer of corncob charcoal, pearl oyster shell powder. Cylindrical low carbon steel of AISI 1018 was used in the present study. The materials put inside the pack carburization with carburizer and pearl oyster shell powder. The pearl oyster shell powder varies of 5, 10, 20, and 25 weight percentage. The temperature of 910oC, 930oC, and 950oC was used to heat the materials with holding time of 90 and 150 minutes. Then, hardness Vickers test and microstructure test using scanning electron microscope (SEM) was used to analyze the hardness number of each materials. The results shown that the hardnessnumber increased up to 262,47 kg/mm2 (82 %) from 144,08 kg/mm by adding 20 % weight of pearl oyster shell powder with heating and holding time of 950oC and 150 minutes, respectively. From microstructure and composition test reveal that surface hardening occurred on the low carbon steel surface due to carbon diffusion during pack carburizing process.
Pengaruh Fraksi Volume Serat Kayu Gelam (Melaleuce Leucandendra) terhadap Kekuatan Tarik dan Impak Komposit Bermatrik Polyester Arief, Saifullah; Pratikto, Pratikto; Irawan, Yudy Surya
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (505.667 KB) | DOI: 10.21776/ub.jrm.2016.007.03.3

Abstract

The purpose of this research is to find the effect of volume fraction variation of “gelam” bark fiber on tensile and impact strength of polyester composite. The filler material was the “gelam” bark fiber with volume variation ratio of 10%, 30 %, 50 % and 70 %. Alkalization of the “gelam” bark fiber used 5% of NaOH and 2 hours of soaking time. Mechanical testing was carried out by tensile and impact testing. The matrix for bonding the “gelam” bark fiber was polyester resin type 157 BTQN and 1% concentration of MEKPO catalyst. The mechanical properties are obtained from tensile and impact testing: The results of tensile testing; slowed the highest tensile strength of compositre with 70% of ‘gelam bark fiber was 15.623 MPa. The results of impact testing: obtained the highest impact strength in composete with 70 % percentage of ‘gelam’ bark fiber is24.772 J.

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