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Jurnal Rekayasa Material, Manufaktur & Energi
Published by Universitas Muhammadiyah Sumatera Utara
ISSN : 26227398     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Aerospace Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Jurnal Rekayasa Material, Manufaktur & Energi, yang diterbitkan oleh Fakultas Teknik, Program Studi Teknik Mesin, Universitas Muhammadiyah Sumatera Utara (UMSU), Medan, Sumatera Utara, Indonesia, Jurnal Rekayasa Material, Manufaktur & Energi menerima artikel ilmiah hasil-hasil penelitian, dan eksperimen, yang mencakup pada bidang Rekayasa Material, Manufaktur dan Energi, Mesin, dan ilmu yang relevan pada sektor terkait.
Arjuna Subject : -
Articles 230 Documents
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Pengaruh Jumlah Sudu Prototype Pembangkit Listrik Tenaga Mikrohidro Tipe Whirlpool Terhadap Kinerja Umurani, K; Siregar, Ahmad Marabdi; Al-Amin, Surya
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5272

Abstract

The water turbine is a device that converts water flow energy into shaft mechanical energy. Before being converted into mechanical energy in the turbine, the potential energy needs to be converted into kinetic energy first. The vortex will move the turbine blades which cause the runner to rotate so that there is a change in the kinetic energy of the water into mechanical energy in the turbine which is used to drive the generator and then into electrical energy. The purpose of this research is to analyze the torque that occurs on the shaft and turbine power. Water is flowed to the test with a pump through a control valve. The water flow is read by a rotameter attached to the pipe to the upper reservoir, while the torque is measured using a load cell, while the rotation is measured using a photo sensor interrupt to read the movement of the counter wheel. Data from load cell and photo sensor interruptor is read using Arduino Uno then the data is stored on laptop in excel file using plx-daq software. The minimum torque for the 8 blades is 9,12 kg.mm and 7.61 kg.mm for 6 blades at a water flow rate of 90 l / min. The maximum torque occurs at the 8 blades of 10.06 kg.mm while the maximum torque at blade 6 is 9,12 kg.mm at the same water flow rate of 150 l / min. The minimum turbine power for the 8 blades is 0.47 W and 0.27 W for the 6 blades at a water flow rate of 90 l / min. The maximum turbine power at blade 8 is 1.03 W, while the maximum power at blade 6 is 0.91 W at the same water flow rate of 150 l / min. From the data analysis, it can be seen that the power for the turbine with the number of blades 8 tends to be greater than the power for the turbine with 6 blades, but if the percentage increases in power between the 8 blades and 6 blades the trend decreases even though the flow rate is increasing.
Kajian Eksperimen Kemampuan Penyerapan Energi Pada Struktur Sarang Lebah Yang Diuji Secara Statis Lubis, Sudirman; Siregar, Ahmad Marabdi; Siregar, C A; Siregar, Irpansyah
Rekayasa Material, Manufaktur dan Energi Vol 4, No 1: Maret 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i1.6697

Abstract

The honeycomb structure is a natural or man-made structure (material) that has a honeycomb geometry, which is aimed at lightweight construction material companies, also getting a quality level from the material selection. The purpose of this study was to analyze the energy absorption ability of the statistical pressure tester. Energy absorption is a method of how an object attenuates due to external pressure. The energy absorption test was carried out by means of a statistical press test, the test object made from aluminum plates in the form of a honeycomb structure with different hexagonal size variations. This section will compare the results of the stress-strain and energy absorption data on each tested specimen to see which one is more efficient among the three specimens with different hexagonal sizes. The final result of this tester will use a graph of vertical stress - strain and energy absorption capability by horizontal and vertical testing. Therefore the results of the greatest energy absorption are in the horizontal test position with a hexagonal size of 2 mm, and the energy placement is in a vertical test position with a hexagonal size of 6 mm.
Pengaruh Variasi Sudut Keluar Impeler Terhadap Performance Pompa Sentrifugal Siregar, Munawar Alfansury; Damanik, wawan Septiawan
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5278

Abstract

The ability of a pump to drain or move a certain amount of fluida / fluida that comes out through the pressure side of the pump in units of time volume is also called the capacity of a pump. Meanwhile, the pump head is the energy per unit weight that must be provided to flow the planned amount of liquid according to the pump installation conditions. A centrifugal pump is a pump that moves liquid by utilizing the centrifugal force generated by the impeller ratation. The results of data calculations and graphic analysis on the effect of variations in the impeller entry angle on the impeller with exit angle (?2) = 250,standard pump impeller,and impeller with exit angle (?2) = 350 on the performance of the centrifugal pump can be concluded, namely the performance value of centrifugal pumps. The highest is the impeller with exit angle (?2) = 250 where the specific speed value produced is 192.52 rpm and the efficiency level of this impeller is 6.82%
Analisis Maintenance Quayside Container Crane Dengan Metode Failure Mode And Effect Analysis ( Fmea) -, Ponidi; P, Bambang
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5268

Abstract

Quayside container crane is a type of crane that is placed on the dock at a container terminal that handles loading and unloading of containers from ship to dock or from dock to ship. Quayside container crane is composed of structural parts, mechanical components, electrical components and control systems. This research was conducted to find the root of the problem in the Quayside container crane, by analyzing the system that was experiencing breakdown maintenance. The data used was a breakdown history Quayside container crane No. 01 in 2018-2019 at the Patchouli Terminal of Tanjung Perak Port. The analysis methods used are Fault Tree Analysis (FTA) and Failure Mode and Effect Analysis (FMEA). From the results of the analysis carried out, it was found that a list of failures that caused the breakdown in 2018-2019 consisted of supply electrical power systems, main hoisting systems, spreader systems, gantry traveling systems, maintrolley traveling systems, and boom hoisting systems. The solution to reduce breakdowns that have occurred is by implementation of predictive maintenance, preventive maintenance, and repair of SOPs and annual maintenance contracts. By using quantitative analysis using Failure Mode and Effect Analysis (FMEA), the largest Risk Priority Number (RPN) is obtained on the main trolley travel system of 450, then continued by the gantry traveling system. 360, the main hoisting system is 280, the suplying electrical power system is 294 and the boom hoist system is 42. Based on the results of the Pareto diagram, the cumulative percentage of priority breakdown calculations is 83% of the main trolley travel system damage,
Analisis Daya Mobil Listrik Terhadap Intensitas Cahaya Mukhamad Khumaidi Usman; Amin Nur Akhmadi
Rekayasa Material, Manufaktur dan Energi Vol 4, No 1: Maret 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i1.6693

Abstract

The body's electrical system has a very important role in a vehicle, namely as the main lighting during night trips as well as a signal to signal other drivers when turning and braking as well as the sound of the horn as an element of safety in a complete vehicle. Problems that often occur in the electrical system of the body, especially in the electrical system of the headlamps or headlights, use incandescent lamps, have very large power so that they are less efficient in terms of energy savings, using LED lamps can cut the current used. The test results show that the LED lamp is indeed more efficient in terms of current to be used as the electrical system for the headlight body, and has a higher light intensity than incandescent lamps. The light intensity produced by the bulb with a current requirement of 1.86 Ampere 1073.9 Lux, for halogen lamps with a current requirement of 2.45 Ampere 2213.97 Lux, while for the LED lamp is 0.47 Ampere 1150 Lux. Of the nine lamp brands tested, the Osram LED lamp is a very good lamp, because it only requires a current of 0.44 Ampere to produce a light intensity of 2200.2 Lux.
Studi Unjuk Kerja Pahat Karbida Berlapis Titanium Aluminium Nitrida (Tialn) Pada Pembubutan Kering Aluminium 6061 S, Nopri Aji; -, Sunarto
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5273

Abstract

Fertilizing is one of the machining processes that uses a chisel with one eye cut to remove material from the surface of a rotating workpiece.The chisel moves in a linear direction parallel to the rotating axis of the workpiece.Some of the cutting variables will determine the quality of products such as cutting speed (Vc) The use of cut speed Variasa produces different thermal load value, and has a big effect on the cutting temperature.The purpose of the test aims to determine the impact of cut speed (Vc), motion feeding (f), and depth of cut (a) against the wear and tear of the chisel.The method used in this research is to use carbide chisels (Wc + Co) coated with Titanium aluminium Nitrida (TiAIN) coating material with DCGX 11T3 02-AI type which is used to cut the 6061 aluminum.Results obtained with cut rate (Vc) 200,270,340 m/min, motion meal (F) 0.1 mm/round, and feeding depth (a) 1.0 mm is the average side wear of the chisel is 0.08, 0.09, 0, 1 mm. The cutting speed is impacting the temperature rise.Side wear value is getting bigger ondry cuttingof 6061 aluminium material along with raising cutting speed Parameters (Vc).
Pengaruh Penggunaan Bahan Bakar Biosolar, Biosolar Dengan Aditive Dan Pertamina Dex Pada Mitsubishi L-300 Terhadap Kepekatan Asap Ponidi .; Ilham Miftakhur Rohman
Rekayasa Material, Manufaktur dan Energi Vol 4, No 1: Maret 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i1.6698

Abstract

Exhaust gas emissions from vehicles are felt to increase with the growth of vehicles on the road, especially the growth of commercial diesel-engined vehicles. The main objective of this study is to determine the quality of fuel that can affect the level of diesel engine smoke density. The test is carried out by taking the sampling test method on vehicles that are familiar to people used by the Mitsubishi L300 diesel small truck and smoke density testing using a Smoke Tester tool. The testing process uses different fuel variants, namely: Bio Solar, Bio Solar added with additives, Pertamina Dex. It is expected that with several different fuel variables, it can determine how much influence the quality of the fuel has on the smoke density caused by the Diesel engine. The testing process at an engine speed of 1500 rpm, 2500 rpm to 4200 rpm for each variable of the testing process at each engine speed is carried out by the test process three times, and then the average results are taken from the entire testing process to get the most accurate results. Bio Solar fuel obtained the highest smoke density results at maximum engine speed, namely 4200 rpm with the highest average smoke density value of 40.1%, Bio Solar fuel plus addictive substances obtained the highest smoke density results at a maximum engine speed of 4200 rpm with an average value The highest smoke density was 31.23% while using Pertamina Dex fuel, the highest smoke density results were obtained at maximum engine speed, namely 4200 rpm with the highest average smoke density value of 18.4%.
Efek Penambahan APK Pipa Kapiler Bersirip Sebagai Penghantar Panas Terhadap Performance AC Pada Aplikasi ACWH Chandra Amirsyah Siregar; Ahmad Marabdi Siregar; Dana Setiawan
Rekayasa Material, Manufaktur dan Energi Vol 4, No 1: Maret 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i1.6689

Abstract

Technological advances encourage researchers to continue engineering technology. One of them is to increase the function of the Air Conditioner (AC) from air conditioning to air conditioning and the provision of hot water for bathing needs (Air Conditioner Water Heater / ACWH). This study aims to analyze the performance of the air conditioner due to the addition of a water heater application. The water capacity in the tank is 60 liters using a capillary tube heat exchanger with the addition of fins. The test was carried out at 3 different evaporator temperatures, namely 16 0C, 18 0C and 20 0C. Data were collected for 60 minutes. The result is that the ACWH application is able to provide hot water for bathing needs, with a temperature of 55.5 0C at the evaporator temperature test of 18 0C. However, the addition of this application resulted in a decrease in AC performance (COP). The COP AC value obtained in the 20 0C test was 3.071 while the ACWH application was 2.081.
Analisis Kekuatan Rangka Bike Lift Terhadap Beban Alat Dan Kendaraan Akhmadi, Amin Nur; Usman, M Khumaidi; Hendrawan, Andre Budhi
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5269

Abstract

To lift a vehicle on a bike lift, a strong frame is needed. A bike lift is a tool for lifting a motorcycle and at the same time, it can be said as a work table. Most of the servicing and repair work of motorbikes is done under the hands, so to do this the mechanic has to sit or squat. By using a bike lift, the height of the motorbike can be adjusted according to the mechanical body posture, so that according to the service work can be done in a comfortable body position without having to squat for a long time. The purpose of this research is to get a strong frame, especially on pins that are exposed to loads from the frame and vehicles. This research uses the calculation of the load that occurs at each load point and calculates the shear stress that occurs at each load point and performs a tensile test on the pin material. The results of the study, the calculation of the largest shear stress, namely 13.26 N, occurred at the bottom pin position with a pin diameter of 10 mm. Meanwhile, from the results of the pin material testing, the shear stress in the safe material range is 354.24 N / mm2. So it can be concluded that the results of the calculation of shear stress that occurs on each bike lift frame pin using solid iron pipe or axles with a diameter of 16 mm and 10 mm, the largest shear stress that occurs on the pin is 13.26 N at the pin position 10 mm. Meanwhile, from the test results of the iron used for the pin, the shear stress in the safe range of the material is 354.24 N / mm 2. So it can be concluded that the use of solid steel pipe for axles with a size of 10 mm and is exposed to the largest shear stress from the frame load, namely, 13.26 N /mm2 is safe to use and strong to withstand the load given to the bike lift.
Perpindahan Panas Dan Penurunan Tekanan Pada Saluran Segiempat Dengan Rusuk V 90 Derajat Khairul Umurani; Arya R. Nasution; D Irwansyah
Rekayasa Material, Manufaktur dan Energi Vol 4, No 1: Maret 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i1.6694

Abstract

The augmentation of the heat transfer surface using ribs is often used in heat exchanger equipment, aiming to increase heat transfer between the main surface and its fluid. This study uses a rectangular channel with testing on the specimen the number of ribs V 2 with three lengths of 200 mm, a width of 150 mm, and plate thickness of 1 mm. Rectangular air duct consisting of a rectangular duct with dimensions of 150 mm x 75 mm and a length of 2000 mm, suction fan, plate-type electric heater, airflow straightener, U monometer, anemometer, ampere meter, voltmeter, speed controller, and thermocouple. The parameters varied were the incoming airflow velocity, namely 1 m / s, 2m / s, 3 m / s, 4 m / s, and 5m / s. The experimental results heat transfer coefficient at tighter ribs provides better heat transfer. The pressure drop in Pa at the tight rib distance is higher than the pressure drop at the spaced rib spacing

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