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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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Optimasi Desain Gasket Karet Tipe Ring Profil C Flange Closed Groove dengan Metode Simulasi Alamsyah, Fikrul Akbar; Choiron, Mochamad Agus; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 7, No 1 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Gasket is one of important part in piping system to prevent leakage, especially in connection between pipes. The purpose of this study was to determine the optimal design on C profile rubber gasket based on contact width considering contact stress. Design parameter in this study were lips thickness (t)= 4; 4,5; 5 mm, lips length (l)= 5; 5,5; 6 mm, outer diameter (Ro)= 6,5; 6,7; 6,9 mm and inner diameter (Ri)= 2,5; 3; 3,5 mm. The observed value is contact width considering contact stress due to flange tightening and its measure by using finite element-based software. Mooney-Rivlin mathematical model used as rubber material model. Based on data from the simulation results, it can be obtained by using Taguchi Method; lips thickness (t) = 4,5 mm, lips length (l) = 6 mm, Outer Radius (Ro) = 6,9 mm and Inner Radius (Ri) = 3,5 mm.

Rekayasa Sistem Informasi Manajemen Perakitan Berbasis Group Technology untuk Mendukung Proses Assembly Frame Body Bus Murdiyanto, Danang; Pratikto, Pratikto; Santoso, Purnomo Budi
Jurnal Rekayasa Mesin Vol 7, No 2 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

PT. APW is a manufacturing company of the bus body. One of the production process department in PT. APW is frame work department. It is in charge of making the bus body frame. The problem faced in this department is inadequationvof the current system. It is because the work is done manually and is not by using computer applications with database systems. The study used the assembly information management system based on Group Technology to help its assignment of bus body frame assembling process and the work report. Management Information System Design Assembly (SIMPER) were performed by using the Microsoft Access 2013 to produce a prototype application SIMPER consisting of phase identification, analyzing, planning, designing, implementating and testing. By designing this SIMPER prototype application, it is expected to meet the needs of users of information systems in Production Manager, SPV and Admin employees.

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

The purpose of this research is to find the effect of volume fraction variation of â€œgelamâ€ bark fiber on tensile and impact strength of polyester composite. The filler material was the â€œgelamâ€ bark fiber with volume variation ratio of 10%, 30 %, 50 % and 70 %. Alkalization of the â€œgelamâ€ 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 â€œgelamâ€ 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 â€˜gelam bark fiber was 15.623 MPa. The results of impact testing: obtained the highest impact strength in composete with 70 % percentage of â€˜gelamâ€™ bark fiber is24.772 J.

Analisis Perbandingan Baterai Lithium-Ion, Lithium-Polymer, Lead Acid dan Nickel-Metal Hydride pada Penggunaan Mobil Listrik - Review Afif, Muhammad Thowil; Pratiwi, Ilham Ayu Putri
Rekayasa Mesin Vol 6, No 2 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

A battery is an important part of electric vehicle which is converting the chemical energy into electrical energy. There are two types of battery based on the occurrence i.e. primary andÂ secondary batteries. In the market there are a lot of secondary battery types for electric vehicleÂ i.e. Lithium-ion, Lithium Polymer, Lead acid, and Nickel Metalh Hydrarde batteries. Because ofÂ that, a study comparation of secondary battery types was needed. Meta-analysis method wasÂ used to analyze the comparison between secondary battery types. The results showed that eachÂ battery have different spesifications, advantages, and disadvantages. There are a lot ofÂ consideration to choose battery for electric vehicle including initial cost, life time, mass, volume,Â temperature sensitivity, acces to care and acces to product.

Pengaruh Volume Alir Udara terhadap Pola Sebaran Gelembung pada Bubble Plume Trihutomo, Prihanto
Jurnal Rekayasa Mesin Vol 6, No 2 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Bubble plume is the effective way to generate bubbles by air injection from the bottom of bath. Bubble plumes is important for gas transfer process, turbulence generation, collecting the surface-floating substance, and also important to mixing effect in chemical process. This research aims to analyse effect of gas flowrate on bubble dispersion pattern in bubble plume. An experimental apparatus to investigating bubble dispersion consists of a transparent vertical bath is 500 mm length, 24 mm wide and 750 mm height. The bubble generator consists of 110 needles, each needle is 0.25 mm in diameter, installed at the bottom of bath. The experimental method was used in this research. Data were taken by high resolution digital camera. Bubble dispersion pattern was generated by air injection from the bottom of bath. The experiments was done at various gas flowrate that is 4.16 x 10-6m3/s, 6.67 x 10-6m3/s,Â 10.4 x 10-6m3/s, 18.83 x 10-6m3/s dan 31.6 x 10-6m3/det. Data analyse using ImageJ software to get number, dimension and position of bubble. The experimental results show that increase of gas flowrate causes the number and the diameter of bubble increase and also to widen of diameter interval and bubble dispersion. In each of gas flowrate the bubble trend coalescence intermittently. The intermittent coalescence decrease with the increase of gas flowrate.

Analisis Teknologi Charger Untuk Kendaraan Listrik - Review Kamajaya, Firdaus Sutra; Ulya, Muhammad Muzmi
Jurnal Rekayasa Mesin Vol 6, No 3 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Electric vehicles are a choice for the future. Therefore, the electric vehicle will be spreads in the community. The public is the average consumer who does not have knowledge about electric vehicles, especially for problem charger. Charger technology in an Electric Vehicle Supply Equipment (EVSE) consists of three types, namely AC level 1, AC level 2 and DC fast charging. Each type has advantages and disadvantages. The disadvantage of AC level 1 type is take a long time for charging (about 20 hours) and the advantage is no risk of damaging the battery. AC level 2 has shortcomings that are still relatively long time to process the charge but shorter process than the AC charge level 1 and there is no high risk of damaging to the battery. DC fast charging has excesscharge process is very short (express)at range 20-30 minutes, but the disatvantage is very high risk of damaging the batteries in continuous usage.This paper also provide discussion for placement of any type of charger, so that people will understand.

Pengaruh Persentase Biodiesel Minyak Nyamplung â€“ Solar terhadap Karakteristik Pembakaran Droplet Udin, Misbach; Yuliati, Lilis; Novareza, Oyong
Jurnal Rekayasa Mesin Vol 8, No 1 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

The aim of this research is to investigate the effect of biodiesel percentage on the droplet combustion characteristic of calophyllum inophyllum biodiesel-diesel fuel blended. The combustion characteristic included ignition delay time, flame visualization, burning rate, and flame temperature. Testing was conducted using fuel blended with biodiesel percentage of 0%, 10%, 30%, 50% and 100%. The fuel was dripped and shaped a droplet that placed on the tip of thermocouple junction and ignited using a heater. The result shown that the ignition delay time increase with increasing biodiesel percentage due to its high flash point temperature and low volatility. Furthermore, burning rate and flame temperature increase with the increasing biodiesel percentage in the blended. These phenomena related to more microexplosion occurrence in the droplet combustion of fuel blended with higher biodiesel content. The last result shown that combustion of diesel fuel droplet has the highest flame dimension, related to its low burning rate and faster vapor diffusion rate.Â

Analisis Penyerapan Energi Crash Box Pola Origami pada Pengujian Frontal Impact Posisi Angular Frontal Bintarto, Redi; Atmaja, Andik; Kusyairi, Imam
Jurnal Rekayasa Mesin Vol 8, No 1 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

In the car, the body structure is designed in such a way so as to transfer and absorb energy. This serves to minimize the result of this accident related to kinetic energy. This needs a system to absorb the kinetic energy maximally, so as a result of a frontal collision events that can be reduced optimally and kinetic energy can be absorbed by a front body structure. Devices used for absorbing kinetic energy in the car is usually called a crash box, which is located between the main structure and bumper. Crash Box generally tubular thin shaped. It has been a lot of research about the crash box. In this study using crash box origami patterns and using methods taguchi orthogonal array L9 (34). AA7003-T7 aluminum material modeled as bilinear isotropic hardening, the loading method is Frontal Impact Frontal Angular Position with impact angles of 5, 15 and 30 degree by using the finite element software simulation methods. The simulation results showed that the crash box in the lowest possible energy absorption were happened at crash box with 5 degree, with 683 153 Joule energy absorbsion. The highest result was happened to crash box number 5 with the results of 3,140.778 Joule. Lowest absorption on impact of 15 degree and 30 degree were happened to crash box number 1 and number 3 with a value of 245 685 Joule and 174 845 Joule, while the highest absorption at mumber 3 with each value 1,708.521 Joule and 1,750.872 Joule.

Pembentukan Titanium Nitrida (TiN) dengan Proses Nitriding pada Titanium Murni Menggunakan Plasma Densitas Tinggi Windajanti, Josephine Maria; Santjojo, Dionysius Joseph Djoko Herry; Abdurrouf, Abdurrouf
Jurnal Rekayasa Mesin Vol 8, No 2 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Pure titanium has been widely utilized in industry but its products suffered from low wear and erosion resistance. The plasma nitriding was selected as a tool to harden the pure titanium products but typically high temperature processing was required to attain high hardness. In the present study, high density plasma nitriding system was applied to make low temperature plasma nitriding at 723 K (or 450Â°C) for 14.4 ks (or 4 hours).Â The average measured hardness reached to 624 HV.Â This high hardness of plasma-nitrided pure titanium at low temperature was attributed to formation of fine TiN precipitates and nitrogen solid solution into vacancy sites in the HCP crystalline structure of titanium.

Pengaruh One Direction Pre-Tension pada Reinforcement Fibre terhadap Kekuatan Tarik dan Impact Fibre-Powder Reinforcement Hybrid Composite Gumilar, Gilang; Oerbandono, Tjuk; Wardhana, Bayu Satria
Rekayasa Mesin Vol 8, No 3 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Nowadays, industrial manufacturing needs environmentally and friendly material and has special properties which are difficult to obtain from the metal material. Composite is one of the alternative materials that can be used to meet those needs. A structural composite material consisting of a combination of two or more elements bonded material at the macroscopic level. This study was conducted to determine the effect of pre-tension one direction on a hybrid composite reinforcement against tensile strength and impact strength. Composite materials prepared by C-Glass fiber types woven rovings, coconut shell powder and vinyl ester resin. manufacturing composite using hand lay-up methods. The variation of the tension given 0N, 50N, 100N, 150N, and 200N. A tensile test based on the reference standard ASTM D 3039 while testing the impact based on ASTM D 6110-04. The results were obtained giving tension to the hybrid composite reinforcement increases tensile strength and impact strength of the material. The lowest tensile strength of the composite obtained in 0N treatment (without treatment) ranged 71,58N / mmÂ², and the greatest tensile strength is obtained in the pre-tension 200N, ranging from 106.05 N / mm2. As for the lowest impact on specimens obtained without treatment ranges 1,34J / mm2 and provision of pre-tension 200N biggest impact strength values obtained, ranging 15,09J / mm2.

Page 21 of 97 | Total Record : 965

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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