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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.
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Articles 10 Documents
 1 
Search results for , issue "Vol 4, No 1: Maret 2021" : 10 Documents clear
Analisis Pengaruh Berat Roller Standard Dan Racing Pada Sistem Cvt Terhadap Rpm Sepeda Motor Honda Beat Pgm-Fi Tahun 2015 Amin Nur Akhmadi; Mukhamad Khumaidi Usman
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.v4i1.6692

Abstract

Currently, automotive products, especially two wheels (motorbikes), are equipped with an automatic transmission system. The type of automatic transmission used is CVT (Continously Variable Transmission). A roller is a material that is composed of Teflon as the outer surface and copper or aluminum as the inner layer. The function of the roller is to press the inner wall of the primary pulley during high rotation. RPM (Revolution Per Minute) is the number of rounds done in one minute. The purpose of this study is to determine the results of RPM on the effect of roller use and to determine the comparison of the effect of using a weight variation of a 13 gram (standard) roller and a 10 gram (racing) roller on the RPM of a 2015 Honda Beat FI motorcycle. 4 steps. The research method used is an experimental method, namely by starting the engine and holding the throttle at 1400-1500 RPM after stabilizing then the throttle is rotated spontaneously up to 9000-9500 RPM. The results of this study can be concluded that the 10 gram roller on the primary and secondary pulleys only get good acceleration and RPM at low rotation speeds. Whereas at high rotational speed the RPM acceleration is less than optimal.
Kajian Eksperimen Kemampuan Penyerapan Energi Pada Struktur Sarang Lebah Yang Diuji Secara Statis Sudirman Lubis; Ahmad Marabdi Siregar; C A Siregar; Irpansyah Siregar
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.
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.
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.
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
Pengembangan Lintasan Pahat Pada Pengefraisan “Umsu” Menggunakan Cnc Tu-3a Rahmatullah Rahmatullah; Khairul Umurani; Munawar Alfansury Siregar
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.v4i1.6690

Abstract

Computer numerically controlled (CNC) machines have long been known and used in various industrial sectors such as the aircraft, shipping, automotive, molding and others industries. Various types of existing CNC machines such as CNC turning, CNC milling, CNC shaping, CNC drilling, CNC laser cutting and others have been commonly used in various manufacturing industries. CNC machines for production units and training unit CNC machines can be used according to milling machining parameters, machine capacity, product quality targets and workpiece material types. In milling machining using a 3-A training unit CNC machine, the first step is to design a workpiece, design G and M codes, simulate it using software such as CAD / CAM and can also be done by simulating it with a pen plotter. After evaluating and the simulation results are in accordance with the workpiece design, it can be executed for product machining. Different designs of CNC machining products have different toolpaths. In general, there are three types of techniques for path generation tools, namely iso-parametric, iso-planner, and iso-scallop height. Tool path generation on "UMSU" CNC milling machining using the CNC TU-3A has been developed a toolpath generation suitable for the "UMSU" machining. The type of tool path generation technique to be used can be considered from several factors including the complexity of the product design, the type of milling tool used, product quality, machining time and other factors.
Analisa Kekuatan Komposit Polimer Dengan Penguat Serat Daun Nanas Ahmad Wiranto; Suhardiman .
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.v4i1.6695

Abstract

Composite is a material that is composed of two or more mixtures with different chemical and physical properties, so as to produce a new material that has different properties from the constituent materials. This study aims to determine the effect of the variation of the volume fraction of pineapple leaf fiber composites on the tensile strength of pineapple leaf fiber composites as a type of natural fiber. While the resin used is Q-Bond resin. The variation of fiber and resin volume fractions are 30% and 70%, 40% and 60%, 50% and 50%, 60% and 40%, 70% and 30%, respectively as many as 3 specimens. The composite printing process is carried out with wood molds according to ASTM D638-14 standards. The data collection method is done by testing the tensile on each specimen. The test results obtained the highest average value of the voltage (σ) of 15.99 MPa, while the lowest average of 12.11 MPa. For the highest average value of strain (ε) is 9.33%, while the lowest average is 6% and for the highest average modulus of elasticity (E) is 249.73 MPa, while the lowest average is 154.62 MPa.
Analisa Sifat Mekanik Bahan Komposit Polimer Diperkuat Lembaran Serat Buah Pinang Akibat Beban Tarik Ade Irwan; Fadly Ahmad Kurniawan Nasution; Muhammad Edy Pamuji
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.v4i1.6691

Abstract

The high availability of areca nut fibers makes it potential to be developed as an alternative material for polymer composites. This paper investigates the mechanical performance of unsaturated polyester resin composite materials reinforced with betel nut fibers. Areca fiber obtained from farmers is dried under the sun. The fibers made in finer fiber sheets which are glued together with an adhesive agent made from thermoplastic acrylic. Based on the results of the tensile test, this composite material has brittle material behaviours which is indicated by the low ability of the material to elongate. The maximum tensile strain of the areca fiber reinforced composite material is less than 2%. The stress-strain curve does not show a clear yield point and plastic zone, along with the fracture shape of the specimen that is perpendicular to the loading direction without any necking, which confirms that this composite material is not an elastic material. Based on the comparison of the number of fiber sheets, the specimen with two sheets of fiber showed a more optimal mechanical performance with a maximum tensile strength of 10.4023MPa and a Modulus of Elasticity of 709.0269MPa.
Identifikasi Kegagalan Pengelasan Mesin Soudronic Ag (Mesin Welder Kaleng) Menggunakan Metode Fishbone Analysis Wilarso .; Nandang Imam Santosa
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.v4i1.6696

Abstract

In the welding process, welding on cans for aerosol liquid fluid, mosquito repellent spray, and air freshener sometimes fails, of the 3000 pcs of cans created during testing, of which 300 pcs have leaks. This study aims to reduce the dismissal of the output of tin. Study methods using the method of fishbone analysis. From the report, it was observed that the incorrect roll profile had a significant impact on the outcomes while welding. Using roll welding with a diameter of 49 mm and a profile width of 2.10 mm, with a depth of 0.30-0.35 mm, for aerosol cans with a diameter of 65 mm. Wire wire with a diameter of 1,50 mm is used. Check the upper welding roll regularly in order not to encounter damage on the profile roll, as wear on the upper welding roll will result in welding failure. It must be removed according to the state of the components to mitigate welding defects that result in cone leakage, and after removing the upper welding roll, the welding results will be refused by 0 percent.

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