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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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Analisis Signifikansi Roda Skateboard Berbahan Komposit Serbuk Batang Pisang Terhadap Perfoma Kecepatan Dengan Metode Anova Achmad Jusuf Zulfikar; Muhammad Yusuf R. Siahaan; Ruli Bay Syahputra
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8068

Abstract

In general, skateboard wheels are made from a mixture of polyurethane (PU) so that they are elastic, lightweight, and strong. However, this material is classified as a toxic material, difficult to obtain, and the price is relatively expensive. Therefore, alternative raw materials that are more environmentally friendly, non-toxic, easy to find, and have sufficient availability are needed. Banana trees are the most abundant and easily found plants in Indonesia, especially Medan. This tree has a soft structure and absorbs vibrations. Thus, the research was conducted to obtain the characteristics of skateboard wheel products from banana stem powder (SBP) composite material as an alternative raw material. The purpose of this study was to analyze the speed of skateboards made of PU (commercial) and SBP in order to obtain the optimum composition of SBP for the manufacture of skateboard wheels. The test uses a sliding platform with a slope of 30o against a flat plane. The number of variations consists of the composition of SBP 5%, 10%, and 15%. As a control, commercial PU wheels were also tested. Analysis of data using the analysis method of mean variation (ANOVA) with the condition of acceptance of the hypothesis H0 at a 0.05. The results obtained are that there is an increase in the speed of skateboards made of SBP composite up to 6, 85% compared to commercial wheels. Based on the Anova test results, it was found that the application of SBP composite materials as raw material for skateboard wheels was proven to significantly increase the speed performance of these wheels.
Analisis Kekasaran Permukaan Cast Iron Menggunakan Cairan Pendingin Berbasis Nabati Pada Proses Face milling Arya Rudi Nasution; Affandi Affandi; Khairul Umurani; Ahmad Marabdi Siregar
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8073

Abstract

The machining process is a major activity in the industry, especially in the automotive industry. The machining process is inseparable from the coolant (coolant), where the role of the coolant in the machining process is to act as cool working conditions, material cleaning, and corrosion prevention. The use of cutting fluid has a negative impact when waste management is not carried out properly, and it will be damaging to the environment and public health. In order to reduce environmental and health damage, development and research have now been carried out for the use of vegetable-based cutting fluid. cutting fluid vegetable-based are biodegradable, eco-friendly, odorless, and non-toxic. This study wants to compare the value of surface roughness using CO (coconut oil) and dromus in face milling machining. The machine used in this research is the conventional Emco F3 milling machine and the tools used are the TPKN 22VC2 series carbide insert tools and the workpiece material used is cast iron (gray cast iron). the value of surface roughness by measuring the roughness using the TR200 surface roughness tool. The results of roughness observations show that the surface roughness value using CO cutting fluid at a cutting speed of 60 mm/min is 1,297 Ra, at a cutting speed of 70 mm/min the roughness value is 0.877 Ra and at a cutting speed of 80 mm/min, it is 0.429 Ra. While the results of measuring surface roughness on the material using a coolant dromus, cutting speed of 60 mm/min are 0.811 Ra, at a cutting speed of 70 mm/min the surface roughness value is 0.804 and at a cutting speed of 80 mm/min the surface roughness value is 0.698 Ra. So can the conclusion be that cutting fluid CO is good to use as a coolant at high cutting speeds.
Perancangan Alat Inverator Energi Listrik Menggunakan Simulink Matlab Balisranislam Balisranislam; Partaonan Harahap; Sudirman Lubis
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8069

Abstract

The need for electrical energy has become an inseparable part of people's daily lives in line with the increasing economy and development in the fields of technology, industry, information, research, agriculture and education. Electric motor machines containing coils of wire (inductors) where inductive loads absorb reactive power for magnetization needs, so the source (power plant) must supply greater power. Of course, this situation can cause voltage drops, increased current in the network and low power factor in the area near the load. Based on the simulation output, the resulting power factor has reached the standard (cos ) (SPLN T5.003-1, 2008) which is 0.85 lagging. However, in this study, the power factor is targeted to reach 0.9 lagging. Therefore, the researchers analyzed how much the capacitor bank needs to be added in order to achieve a power factor of 0.9 lagging.
Pengaruh Perbandingan Secondary Sheave Spring Standard Dan Racing Terhadap Akselerasi Amin Nur Akhmadi; Mukhamad Khumaidi Usman; M. Taufik Qurohman
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8074

Abstract

Currently, automotive products, especially two-wheelers (motorbikes), are equipped with an automatic transmission system. The type of automatic transmission used is CVT (Continously Variable Transmission). Motorbikes with automatic transmission have several advantages, one of which is that they are more practical in use compared to motorbikes with manual transmission. The purpose of this study was to determine the RPM results on the effect of per cvt standard (1000 rpm) and per cvt racing (2000 rpm) on the RPM of a 2015 Honda Beat FI motorcycle. After replacing per cvt, it is expected to improve the performance of the 4 stroke combustion motor. The research method used is an experimental method, namely by starting the engine and holding the throttle at 1600 RPM after stabilizing then the throttle is rotated spontaneously up to 9000 RPM. The results of this study can be concluded that using per cvt2000 rpm only gets good acceleration and RPM at low rotational speeds. Whereas at high rotational speed it is less than optimal, but gets maximum power.
Rancang Bangun Alat Filterasi Limbah Minyak Pelumas (Oli Bekas) Menggunakan Pasir Zeolit, Karbon Altif Dan Membran Keramik Muhammad Rinaldy Kusnadi; Iwan Nugraha Gusniar; Kardiman Kardiman
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8070

Abstract

The increasing use of motor vehicles, the greater the amount of engine oil consumption. Engine oil cannot be used continuously due to frictional force on the engine, so engine oil is purified. Unused engine oil can pollute the environment because it is categorized as B3 waste. Used engine oil has a higher metal content than new engine oil. The reduction in metal content can be done by using a filtration column containing zeolite and activated carbon with a filtration column height of 20 cm from each media. Besides filtering also used separation by using a ceramic membrane. In the use of filtration columns filtering used oil using zeolite and activated carbon after that continued using a ceramic membrane, before the used oil is heated at a temperature of 700 C then flowed on the ceramic membrane. In this research, a decrease in levels of aluminum (Al), iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) was obtained.
Perencanaan Biaya Pembuatan Dan Proses Pemesinan Mesin Pengemas Minyak Goreng Sachet Iwan Nugraha; Jojo Sumarjo; M. Topan Maulana
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8075

Abstract

The packaging is an activity that aims to increase selling value and protect products from damage from the environment. Packaging automatically uses a packaging machine to increase the amount of production. Packaging machines have very expensive prices so that it is burdensome for UMKM who want to do business in this field. This research will make a cooking oil packaging machine with a capacity of 15 pcs / minute. Making this machine requires a machining process including the welding process, the grinding process, the drilling process, and the lathe process. The cooking oil packaging machine consists of several components and in the manufacturing of the components, this packaging machine costs Rp. 197,513, shaft component Rp. 130,506, press components Rp. 150,085, plastic forming components Rp. 50,631, oil channel components Rp. 50,591. The basic price of this cooking oil packaging machine is Rp. 2,713,000 and the price of the cooking oil packaging machine if added with VAT and the profit, the selling price of this machine is Rp. 4,609,000.
Kajian Pengaruh Ketebalan Kaca Evaporator Terhadap Energi Yang Diserap Kolektor Pada Proses Desalinasi Air Laut Wawan Septiawan Damanik; Munawar Alfansury Siregar; Sudirman Lubis; Ahmad Marabdi Siregar
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8071

Abstract

The testing of desalination equipment is based on the increasing level of human need for the use of clean water. Improvement methods continue to be carried out with the aim of increasing the yield of clean water from desalination equipment. This research was conducted experimentally by providing a copper collector in a desalination device with a harpan to make it easier to absorb heat so that the water in the evaporator expands faster. By providing a variable difference in glass thickness, it is hoped that it can provide information that a good glass thickness can be applied to desalination equipment. The variation of the glass thickness is 4 mm and 5 mm with the same glass surface area. The results show that glass with a smaller thickness will make the desalination tool faster in absorbing heat energy. However, some conditions may also be considered to avoid damage to the glass. With the wind speed on the fourth day of testing which is 5.67 m/s and strong solar intensity reaching 397.14 W/m2, the energy absorbed by the collector reaches 3.72 kW/day on a glass thickness of 4 mm. Meanwhile, at a different thickness of 5 mm, the energy absorbed by the collector only reaches 2.72 kW/day. This shows that the difference in glass thickness plays a role in determining the occurrence of conduction heat transfer from outside the evaporator into the evaporator chamber.
Analisa Potensial Debit Air Pada Bendungan Bandar Sei Jepang Sebagai Pemanfaatan Pembangkit Listrik Muchsin Harahap; Muhammad Fitra Zambak; Marnida Yusfiani
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8076

Abstract

The Japanese Bandar Sei River is one of the rivers in Tanjungbalai City with a width of 5.1 km and a width of 6 meters. The river flows into the Asahan River. The river flow can be used as a source of electricity by constructing dams on the river. This is used by the author as a form of studies research. The technique used on this studies is the M.J Mock method to find the value of reliable water discharge and Flow Duration Curva for the probability of water discharge. Based on the findings of the research, the analysis of reliable water discharge calculations obtained from the analysis is 4.93 m3 / second. The potential for water power generated is Theoretical Power: 94 kW, Turbine Power: 130 kW and Generator Power: 116 kW. The average value of evapotranspiration is 150.88 mm.
Analisa Pengaruh Arang Kayu Bakau, Arang Tempurung Kelapa Dan Arang Kayu Leban Pada Proses Pack Carburizing Terhadap Kekerasan Baja Karbon St 37 Mazuli, Sabri; Haripriadi, Bambang Dwi
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.v3i2.5275

Abstract

This research was conducted to determine the effect of variations in activated charcoal media and temperature variations on the price of rockwell hardness and the chemical composition of ST 37 steel in the carburizing process. The carburizing process is widely used to increase hardness and add carbon to steel which has a low hardness value and needs to be given special treatment to increase the hardness of the steel. In this study, the carburizing media used were mangrove charcoal, coconut shell charcoal, lebanese wood charcoal that had been made into powder and a mixture of BaCO3 as a catalyst. In this study, the carburizing process was carried out with temperature variations, namely 750oC, 850oC and 900oC after reaching the desired temperature and then held with a holding time of 2 hours. The percentage of carbon absorption is more absorbed in lebanese charcoal at a temperature of 900oC with the addition of carbon by 0.61%. Whereas for rockwell hardness testing the highest hardness value at 900oC was found in lebanese charcoal with a hardness value of 79.9 HRC.
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.

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