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Rekayasa Mesin

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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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Perancangan Alat Penghitung Benih Ikan Berbasis Sensor Optik Purbowaskito, Widagdo; Handoyo, R.
Rekayasa Mesin Vol 8, No 3 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Freshwater fish is one of important commodities for the people of Indonesia. High level of freshwater fish consumption in Indonesia leads to an enormous amount of freshwater fish embankment business. These freshwater fish embankment business are supported by fries cultivation business. One of the activities on the fries cultivation business is trading activity where the traded fries counting process is important. One of the problems on the counting process is that the counting process is done manually which is tend to be done inaccurately and time consuming. A proposed solution to alleviate this problem is the development of fries counter device by using optical sensor technology. The counter device consists of mechanical and electronics systems. The device is designed as a plastic box with three distribution pipes where on each pipe there is a transparent part installed with the optical sensor. Based on the testing results the optical sensor can be utilized as the counter sensor with accuracy result 91.4%.

Engine Combustion Efficiency and Performance of Exhaust Pipe Fuel Preheating System Budiprasojo, Azamataufiq; Irawan, Andik
Jurnal Rekayasa Mesin Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

The Exhaust Pipe Preheated Fuel System (EP2FS) is a fuel preheating system that utilizes wasted heat from the muffler. Fuel heating aims to improve the homogeneity of fuel and air mixtures to improve the combustion process in the engine. Making EP2FS requires careful design and calculation because the fuel temperature should not exceed 60oC so as not to evaporate. Design and calculation, using heat transfer theory of helical heat exchanger. A ready-made system will be applied in motor vehicles to be tested for combustion efficiency and performance.

Analisis Penambahan Coupling Agent terhadap Sifat Tarik Biokomposit Kulit Waru (Hibiscus Tiliaceus)-Polyester Wirawan, Willy Artha; Widodo, Teguh Dwi; Zulkarnain, Akbar
Jurnal Rekayasa Mesin Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

The aim of this research is to investigate the effect addition of silane coupling agents of Waru bast-polyester composite on tensile strength. Biocomposite is an innovation in material engineering made from the environment-friendly and potentially-developed bast fibers of Waru tree. Waru bast fibers, as reinforcement, were prepared by alkali procces employing using 6% NaOH solution for 120 minutes and then were added coupling agent with variation of 0%, 0.25%, 0.5%, 0.75% and 1.0%. The biocomposite was formed by continuous fiber arrangement using 60:40 fiber-matrix mass fractions with vacuum pressure resin infusion method. Tensile test specimens were formulated base ASTM D638-03 standard. Biocomposite investigation was performed by tensile test, while bond quality observation utilized use micro photo. The results of the study show that the highest strength of biocomposite was 401,368 Mpa on the silane coupling agent addition0.75%

Pengaruh Variasi Lip Thickness pada Nozzle Terpancung terhadap Karakteristik Api Pembakaran Difusi Concentric Jet Flow Faizal, Elka; Widodo, Agung Sugeng; Sasongko, Mega Nur
Jurnal Rekayasa Mesin Vol 7, No 1 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Nozzle shape greatly influence turbulence between the fuel, air and formation of flow recirculation zone to produce a homogeneous mixing and get a near-perfect combustion. The recirculation zone is area that caused by flow rate breakdown, causing vortex and backflow around the end of nozzle. This backflow that hold up while lowering the flame so the flow rate of fuel and air mixture maintained lower or equal with flame speed. This study used variation of lip thickness of truncated nozzle 0, 4, 8, 12, and 16 mm.To obtain flame stability, fuel velocity and air velocity were variated. Thermocouples were used to measure flame temperature and its distribution. The results showed that stability of concentric jet diffusion flame flow increased with narrow lip thickness on a truncated nozzle. The wider stability area obtained in 4 mm lip thickness. In addition, temperature on diffusion flames concentric jet flow also more evenly distributed evenly with size of the nozzle lip thickness. The highest temperature and temperature distribution in the horizontal direction were occured in in the nozzle with lip thickness of 0 mm. A shadowgrapgh visualization was also used to identify phenomena of the nozzle exit flow.

Kecepatan Pembakaran Premixed Campuran Minyak Jarak - Liquefied Petroleum Gas (LPG) pada Circular Tube Burner Riwu, Defmit B.N.; Wardana, I.N.G.; Yuliati, Lilis
Jurnal Rekayasa Mesin Vol 7, No 2 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

This study was conducted to determine the characteristics of premixed combustion of a mixture of castor oil - LPG on a circular tube burner. Percentage of LPG fuel in a mixture of jatropha curcas oil - LPG varied as much as 10%, 20%, 30%, and 40% of the mass flow jatropha curcas oil vapor. Considering the flame of fire there are two angles formed which describe burning velocity. Also there are formed two cones of fire where the bright blue inside cone is a premixed flame, while the outer blue white cone is flame a diffusion flame. An increase in the percentage of LPG makes the value of top and bottom angle increase. So that the burning velocity on the upper angle decrease whilst on bottom angle increase.

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

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 Â 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 Â 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

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.

Analisis Perbandingan Tipe Pelumas Berdasarkan Wujud pada Studi Kasus Pelumasan pada Gearbox Sepeda Motor Muhammad, Fadhil Burhanuddin
Jurnal Rekayasa Mesin Vol 6, No 2 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Lubricants have a very wide application in all aspects of life, including industry and automotive sectors. The main purpose of a lubricant is to keep the moving/sliding surfaces apart, so that friction and consequent destruction of material is minimized. Lubricants can be solid, semi-solid, liquid, or gas. The research method in this study composed of data collecting through library method, the theory structures consist of explanation of the advantages and disadvantages of each type of lubricant as well as the working conditions on the given case study. The working conditions of the case study are used as the parameters to the feasibility of lubricants on case study, the parameters are the ability to receive the load, the ability to survive at a speed of 700-3000 rpm, the ability to be circulated, the ability to do the filtering, and the ability to do the cooling. Based on the results obtained from literature study, found that the good ability to receive a load owned by lubricants semi-solid and liquid, the ability to survive at a speed of 700-3000 rpm only owned by liquid lubricant, the ability to be circulated owned by liquid lubricants and gas, the ability to do filtering owned liquid lubricant and gas, and the ability to perform cooling owned by liquid lubricant and gas. Based on the results of the final analysis, the best lubricant that suitable for the case study is liquid lubricant.

Analisis Perbandingan Metode Peningkatan Wear Resistance Teguh, Nurdin Hasananto
Jurnal Rekayasa Mesin Vol 6, No 3 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Improving wear resistance has many variated techniques. The purpose of this work is to compare between DCT (Deep Cryogenic Treated) technique and sand blasting treatment on material steel. XRD ,SEM and TEM are used to examine the changing phase in microstructure level and Hardness contact zones after and before testing. Hence, it can be defined which method that improve significantly the wear resistance.

Konfigurasi Serpentine-Paralel dan Paralel-Serpentine pada Pipa Fluida Pemanas Air Surya Sistem Thermosiphon Hatib, Rustan
Jurnal Rekayasa Mesin Vol 6, No 3 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

The aim of this research is to compare the performance of two differences tube configuration in solar hot water collector thermosiphon system of Serpentine-Parallel and Parallel-Serpentine. Not only the tubes configuration are not the same, but also the collector materials, such as hot water reservoir and heat absorber are differences. For example, fiberglass and stainless steel reservoirs are compared in terms of long-lasting heat isolation. Likewise, copper tubes configuration between serpentine-parallel and parallel-serpentine are shown in association with mass flow rates and times consume to heat the water within the tubes. The test results show that parallel-serpentine configuration has higher performance (around 50%) than that of serpentine-parallel (approximately 35%). It is possibly because of fluid velocity within the tube configuration.

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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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Editorial Address Redaksi Jurnal Rekayasa Mesin Jurusan Teknik Mesin Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang, Jawa Timur Indonesia 65145

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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