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R.E.M (Rekyasa Energi Manufaktur) Jurnal
Published by Universitas Muhammadiyah Sidoarjo
ISSN : 25275674     EISSN : 25283723     DOI : https://doi.org/10.21070/r.e.m
Core Subject : Engineering,
Engineering
Focus and Scope Aim: to facilitate scholar, researchers, and teachers for publishing the original articles of review articles. Scope: Mechanical Engineering include: Energy Conversion Renewable Energy Manufacturing Materials and Design Engineering Mechatronics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 7 Documents
 1 
Search results for , issue "Vol 3 No 1 (2018): June" : 7 Documents clear
Pengaruh Jenis Bahan Bakar Terhadap Viskositas dan TBN Pelumas SAE10W-30 pada Motor Bakar 125cc Dwi Yuliyanto; Edi Widodo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1541

Abstract

Along with the increasing progress of gasoline type of fuel led to many types of gasoline fuel sold in Indonesia to meet consumer demand required for fuel energy motor fuel. Includes Premium fuel types, Pertalite, Pertamax, Pertamax Turbo, and Pertamax Racing. Therefore, with the number of options are conducted research on the use of 3 different types of fuel are: Premium, Pertalite, and Pertamax tested on a 125cc motor fuel engine for 7 hours nonstop at 4000 rpm speed to know the effect on the difference in decrease in value of Viscosity and TBN SAE10W-30 lubricating oil used on the combustion engine. Given the function Lubricant oil is also very important in maintaining the durability and performance of the engine. The results show that the use of Pertamax fuel has the highest decrease in Viscosity and TBN value compared to Pertalite and Premium fuels. Where each value of Viscosity and TBN on the sample of Pertamax lubricant 9.7 cSt and 6.9 mg KOH / g. Pertalite 9.8 cSt and 7.1 mg KOH / g. Premium 7.2 cSt and 10 mg KOH / g.
Pengaruh Penambahan Kadar Gula Pasir pada Lem Besi Tipe Epoxy terhadap Tegangan Geser Sambungan Itang Jaelani; Daryono Daryono; Mohammad Jufri
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1589

Abstract

This research concerned on glueing by adding sugar variation toward metal shear strength tested with tensile test. Shear strength test was conducted as method of this research with tensile test tool where variation of additional suggar is respectively 1 gr, 2 gr, 3 gr, and 4 gr with 3 specimens for each variation. Result of testing shows that the highest value of shear strength is 0.69 kg/mm2 on variation of 1 gr additional sugar. Whereas, 2 gr additional sugar variation resulted the highest shear stress of 0.30 on specimen no. 2. Meanwhile, on 3 gr variation, the highest value is 0.821 kg/mm2 on specimen no. 3. The last variation of 4 gr additional sugar has the highest value on 0.074 for specimen no. 2. It confirms that adding powder on epoxy glue will increase displacement or additional length during testing process. Yet, the highest displacement occur in 3 gr additional sugar variation. It is due to the additional sugar of 3 gr made epoxy dense and less stiff compare with 1 gr, 2 gr, and 4 gr additional sugar. It is as depicted by Table 4.2 on 4 gr variation for shear stress and tensile stress.
Analisa Efektivitas Dan Efisiensi Pompa Bravo Tipe WP20CX Untuk Pembersihan Kolam Renang di Kolam Rahayu Park Mochammad Alim Huda; Mulyadi Mulyadi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.862

Abstract

Technological development is very rapid, the demand for the needs of both goods and services is demanded to be faster. Pumps are one of the tools that are often used in industry to help meet human needs, where this tool is used to ease the burden of humans who cannot be demanded to continue working. But in determining the pump there are many things that need to be considered in its use. Analysis of the WP20CX BRAVO pump used in the process of assisting the provision of clean water in the Rahayu Park pond is one of the stages in which the performance of the pump is known in terms of the effectiveness and efficiency of the pump against pool cleaning. This determination was reviewed through several different discharge variables when taking 5 samples at each suction of 100%, 80%, 60% and 40% with the aim that the pump works optimally. From the discharge, the pump size is produced with a discharge of 300 liters / minute, pump diameter 2 "and with a pump motor power of 2 kW and the cost required in the recommended pump operation is Rp. 10,000, - every 6 hours of pump operation.
Pengaruh Variasi Holding Time Peleburan terhadap Karakteristik Logam Al-Si Menggunakan Cetakan Pasir Muhammad Taufiq; Murjito Murjito; Dini Kurniawati
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1590

Abstract

Molten metal is a method to form metal to be base material of making equipment and give great advantages to human life. Purpose of this research is to find out impact value, hardness, macro defect, and micro structure as the result of holding time in molten Al-Si. Impact value of Al-Si due to molten holding time by variation of 0, 10,20, and 30 minutes are respectively 0.37 joule/mm2, 0.29 joule/mm2, 0.30 joule/mm2, and 0.26 joule/mm2. Meanwhile, hardness value of 0, 10, 20, and 30 minutes holding time are respectively 65.886 kg/mm2, 81.681 kg/mm2, 88.86 kg/mm2 and 86.265 kg/mm2. Brittle fracture occurred in all specimens and granule size of micro structure is smaller with the holding time. This research confirms that impact value has inverted correlation to hardness value. The lower of impact value, the higher hardness value. Based on micro structure observation on Al-Si casting due to molten holding time in 0, 10, 20, and 30 minutes variation, it is obtained smaller granule size.
Predictive Maintenance Implementation In Reach Stacker Kalmar Type Drd To Reduce Component Failure Ponidi Ponidi; Ali Makhfud
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1538

Abstract

The Reach Stacker lifting tool is the most productive lifting tool for container lifting today. It can move container till 20 container box in every hour, it means that in 3 minutes it can lift and lower 1 box container. In operation the lifting equipment will surely experience a stop operation due to the failure of a component. The purpose of this study was to determine critical and important components of the history of failure data for a year (2016) in PT meratusline, by using tools Fault Tree Analysis, Failure Mode and Effect Analysis and Pareto. From the analysis, it obtained Load Handling component as the most critical component based on the most frequent failure and required a long time to repair. The cause of the failure itself was inconsistent greasing maintenance / Predictive maintenance was not executed and there was no loose handling of Load Handling chain components. From the result of research, it was suggested to make standard rule by adding greasing item in worksheet Predictive maintenance and Standard Operating Procedure Predictive Maintenance for chain replacement on Load Hadling component if already entering 12000 Hour life.
Pengaruh Sudut Pengarah Aliran Pada Turbin Air Crossflow Tingkat Dua Terhadap Putaran dan Daya Satria Candra Laksmana; A'rasy Fahruddin; Ali Akbar
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1591

Abstract

The potential of hydro energy is very large both for large scale and for small scale. Until now, the need for energy continues to increase, so that energy is a very important element in the development of a country or a region. Cross-flow turbines are one type of turbine that is often used for PLTMH. In this study planning a cross-flow water turbine applied to the height and amount of water per second in the irrigation channel water flow, this water flow will rotate the turbine shaft to produce mechanical energy. With variations in the direction of the turbine flow direction, namely 30o, 35o, and 40o, and the same variation of water discharge 10,5 L / s, 21 L / s and 31,5 L / s to determine the effect on the rotation and the power produced. In this study with 12 turbine blades, 30o blade angle, 40o flow direction angle, and 31.5 L / s water discharge obtained the highest first stage turbine rotation value is 478 rpm. Whereas at the flow direction angle of 30o with the same water discharge which is 31.5 L / s so that the first stage of the turbine is obtained is 296 rpm.
Kajian Eksperimental Koefisien Redaman Akustik Bahan Pelapis Plat Dek Kapal Wibowo Harso Nugroho; Nanang J H Purnomo; Hardi Zen; Andi Rahmadiansah
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1511

Abstract

With the increasingly strict requirements of the ship classification bureau for permissible noise limits to allow passengers and crew to be more comfortable and secure a technical assessment is required to address the characteristics of the noise. A noise beyond the standard allowed in the vessel can be a problem to the ship operators. This noise problem will greatly affects the crews' comfort and passengers. One method to reduce the noise on a ship is to use sound insulation. This paper describes the method for determining the absorption coefficient α and the transmission loss (TL) through an acoustic test of a concrete insulation in the laboratory. The test was conducted by using the method of impedance tube where a speciment response measured by a microphone. In general, the properties of this insulation material remains as the main base material which is concrete. it has been found that the transmission loss value (TL) is in the range of 10 - 50 dB whereas for the base material the concrete is around 22 - 49 dB but the absorption coefficient α of the specimen material is much higher than the material of the base material especially in high frequency, which ranges from 0.15 to 0.97, whereas for concrete base materials have absorbent coefficient α ranges from 0.01 to 0.02.

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