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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 102 Documents
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Kajian Numerik Pengembangan Symmetrical Blade Propeller Untuk Kapal Patroli 60m dengan Menggunakan Teori Lifting Line Mahendra Indiaryanto; I Made Ariana
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.778

Abstract

The development of technology science in the field of maritime is one aspect that needs to be considered. One of them is the development of a propulsion system that is able to work efficiently (Aspects of hydrodynamics) On patrol boats of Indonesian waters guard. Because during this design and manufacture of propellers in need on fast boats is highly dependent on foreign parties. Therefore, the purpose of this study was to produce a propulsion system design suitable with a 60m patrol boat. So that it can be standardized the main size of the boat with its propulsion system. This research is conducted through several stages, where we design the propulsion system and calculated numerically computation (Matlab) Which will be used as a performance analysis of the design that has been determined. So from the results it is known, that the type of propeller boat type 60m patrol match with the engine of the ship that has been set.
Analisa Pengaruh Gerak Makan Dan Putaran Spindel Terhadap Keausan Pahat Pada Proses Bubut Konvensional Mohamad Miftakhul Rozaq; Iswanto Iswanto
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.842

Abstract

This paper discuss the effect of feeding motion and spindle rotation and also the relationship between feeding motion and spindle rotation on wear of tool in conventional lathe process. In this study the machining parameters are feeding motion (f) that varied at 0.12 mm/rev, 0.24 mm/rev and 0.35 mm/rev. With spindle rotation (n) that is 300 rpm, 650 rpm and 1000 rpm. While the cutting depth (a) is 0.5 mm. Then, the wearing edge of the tool was tested. The result of wear test in the edge of tool, show that (1) the greater the feeding motion the higher wear value of tool and the relationship is positively linear; (2) The larger the spindle rotation the lower wear value of tool will be and the relationship is negatively linear.
Simulasi Numerik Aliran Melewati Nozzle Pada Ejector Converging – Diverging Dengan Variasi Diameter Exit Nozzle Novi Indah Riani; Syamsuri Syamsuri; Rungky Rianata Pratama
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.796

Abstract

In the process of cooling or refrigeration, are required components where capable to flow the fluid to create a cycle of the cooling process. Among some of the vapor compression systems, the usage of ejector is the simplest system. Ejector has three main parts: primary nozzle, mixing chamber and diffuser. Various experiments of steam ejectors developed to increase the value of the COP. Entrainment ratio directly affects to the COP value generated by the system, where the geometric shapes and operating conditions in the steam ejector will affect to the value entrainment ratio. This research was carried out numerical simulations using CFD commercial software with k-epsilon to predict flow phenomena which passes through the ejector nozzle in the ejector converging-diverging which varying exit diameters 3.5 mm; 4mm; 5 mm; and 5.5 mm. Respectively the simulation results showed exit nozzle steam ejector that the smallest diameter of 3.5 mm give the optimum performance because it provide the highest speed of fluidity. While the state of vacuum in mixing chamber increase, it cause the secondary mass flow higher as well as the value of the entrainment ratio.
Analisis Drag dan Lift pada Variasi Bentuk After Body Kapal Selam Mini dengan Metode Computational Fluid Dynamics Putri Virliani; I Ketut Suastika; Wasis Dwi Aryawan
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.755

Abstract

One aspect that needs to be studied in submarine design is the hydrodynamic aspect relating to submarine maneuverability. This research begins by calculating the value of drag and lift on the three variations of the after body’s mini submarine. The first variation as the initial design is rudder and stern plane arranged perpendicularly or named the+ Stern. Then for the second variation made changes to the arrangement of rudder and stern plane in the after body of the mini submarine with + Stern arrangement, the rudder arranged each other crossed so that it resembles the letter X and called the X-Stern arrangement. Further, for the third variation, the upper rudder of the X-Stern arrangement is replaced by the upper rudder of the + Sternarrangement so that it resembles the inverted Y letter and is called the Y-Stern arrangement. Drag and lift are calculated numerically by using ANSYS-CFX software. From the calculation of CFD found that the submarine with after-body Y-Stern arrangement has the smallest drag and lift value.
Pengaruh Variasi Karbon Aktif dan Waktu Tahan Terhadap Kekerasan Material JIS G-3123 Menggunakan Metode Pack Carburizing Rahma Rei Sakura; Suheni Suheni; Dani Darojat Iskandar
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.805

Abstract

Improvement of mechanical feature in metals are necessary for industrial development. In industries, it requires the mechanical features, such as frictional strength and good wear resistance. Carburizing is a heat treatment process that produces toughness surface in the presence of carbon-bearing material. The carburizing process of JIS G-3123 steel was performed by Pack Carburizing method with divergent variation of activated carbon weigh(s) 125 grams, 250 grams, and 400 grams and selected holding time in range of 30 minutes, 45 minutes, and 60 minutes. In the result, it was obtained 463.550 kg / mm2 for the highest value of toughness with the weight of 400 gr activated carbon and holding time of 30 minutes. Therefore, it indicated that the higher weight of activated carbon in the carburizing process, the material hardness value will be higher as well, with the lowest holding time.
Analisa Pengaruh Variasi Diameter Pipa Tekan PVC Pada Pompa Rotari Untuk Kecepatan Gaya Dorong Air Rega Yuan Pradhana; Edi Widodo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.846

Abstract

This research is aimed to analyze the effects of the PVC rotary pipe’s diameter to the velocity of the viscous forces. The diameter of the PVC rotary pipe used in this research are (1 ½”, 1”, ¾”, ½” inch). The procedure of this reasearch is begin with designing the pipe’s installation, then continued with the pipe installation, then continued with data recording. After the data is collected from the experiment, analyzing the data is needed. Also, calculate if there’s any effects of the velocity of the viscous forces due to the changing of the dependent variables (which is the diameter of the PVC rotary pipe). In the process of the fluid conduction inside the pipe, head losses are usually happened. The manual calculation needed to complete the research are, surface area calculation, fluid velocity calculation, reynold number calculation and coeff. Losses calculation. After all of the calculation are collected, the result of the research will be obtained. After that, discussion and conclusion can be produced.
Estimasi Posisi Magnetic Levitation Ball Menggunakan Metode Akar Kuadrat Ensemble Kalman Filter (AK-EnKF) Teguh Herlambang
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.768

Abstract

The role of Magnetic Levitation Ball in an industrial world is very important, among others, as system applied to a train moving on the rail at high speed (MAGLEV). Magnetic Levitation Ball is system consisting of a ferromagnetic solid steel ball floating over The surface of air medium when supplied with electromagnetic power which is hard to predict its position, and therefore estimations is required to estimate the position, and speed of the steel ball when the electromagnetic power is supplied to the steel ball. This paper was study on application of the modification of Ensemble Kalman Filter (EnKF) method by adding Root Square at the stage of corecction called Ensemble Kalman Filter Square Root (EnKF-SR). Implemented to the mathematical model of magnetic levitation ball and speed of ferromagentic steel ball the result of the simulation of EnKF-SR using mathematical model of magnetic levitation ball showed that the error was less than 2% by generating both 200 and 300 ensembles. The least error was observed when 200 ensemble was generated at which the position error of ball was 0.018 m, and speed of the bll was 0.016 m/s and the electric current was 0.018 A.
Analisa Hasil Uji Impak Sampah Plastik Jenis PP, PET, dan Campuran (PP + PET) Wawan Trisnadi Putra; Ismono Ismono; Fadelan Fadelan; Yoyok Winardi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 1 (2017): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i1.751

Abstract

Material Plastic is difficult to decompose, so it needs to be held research on utilization of plastic waste that is around us. Impact test on recycled plastic waste aims to find out the physical properties, tenacity, toughness of plastic waste re-rubbish. Specimens of impact test based on standard sample (ASTM E-23) with Charpy test rod has dimension of size is 10 x 10 x 100 mm (height x width x length). With the notch position in the center, with a V note notch, 2 mm notch depth from the surface of the specimen and 45º notch angle. The specimens were made according to the sample with the test carried out 10 times, with the result of the average value of the specimens being the polypropylene type plastic of the mean energy impact value = 1.31 joule and the mean impact strength value = 0.0161 joule / mm². Polyethylene Terephthalate plastics with mean value of impact energy = 1.15 joule and mean impact strength = 0,0138 joule / mm², plastic mixture between PP and PET value of impact energy = 1.18 joule and mean impact strength = 0.0145 joule / mm². The results of this Polypropelin plastic test have the highest impact value value for recycled plastic waste.
Analisa Kualitas Semen Melalui Pengukuran Konstanta Dielektrik Dan Resistivitas Bowo Eko Cahyono; Misto Misto; Holili Nur Arivah
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 2 (2017): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i2.1199

Abstract

Cement is an adhesive material that is capable of tying dense ingredients into one solid unity, cement was used as construction materials. Any materials including cement has physical properties and is largely determined by the magnitude of the internal condition of the materials. This research was conducted to find out the quality of cement by using measurements of the dielectric constant and resistivity values. The materials examined in the form of 3 brands of cement mixed with sand and water. This research method using capacitive and resistive by using an oscilloscope as a voltage reader. Note that the three cement brands have the same dielectric constant value i.e. amounting to 0.30 and resistivity value of 30.00 Ωm on day 28. The relationship between the dielectric constant value against the addition of age showed a decrease, while for values of resistivity shows an improvement. Onthe measurement of the dielectric constant shows that cement A brand more quickly achieve drying compared to brand B and brand C, as for the measurements of the resistivity shows that cement brand C more quickl yachieve drying compared to cement brand A and brand B.
Pengaruh Jarak Tempuh Terhadap Viskositas Oli A, B dan C Pada Sepeda Motor Yamaha Mio Tahun 2011 Erwin Susetyo Hadi; Mulyadi Mulyadi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2 No 2 (2017): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i2.1038

Abstract

Lubrication can be interpreted as the provision of lubricants on a machine with the aim to prevent direct contact between the moving surfaces. Viscosity is a very important trait in lubricating oils. The viscosity of lubricating oil indicates the ability and ease of lubricating oil flowing. Distance is a number that indicates how far an object changes position through a particular path. This research method using Yamaha mio 110 cc motorcycle. Using SAE 10W-40 oil with the initial viscosity of oil A(3.17), B (5,18 ), C (15,0 ). Then tested with a distance of 30.60 and 90 km with a constant speed of 70 km / h and then taken the oil sample. The result of the test is calculated using the viscosity formula with the law of Stockes. When it was on 90 km speed, Oil C still shows the highest viscosity with a value of 2.55, while oil A remains the lowest viscosity with a value of 1.70 . This study shows that the higher the viscosity affects lubrication. The more oil layers, the lubrication can do better and the duration to changes the oil will affected too (longer).

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