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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 230 Documents
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Analisis Variasi Suhu Terhadap Variasi Cahaya Pada Rancang Bangun Solar Test Simulator Menggunakan Peltier ., Cholish; Rusdi, Muhammad; Rahmawaty, Rahmawaty; Pulungan, M Anhar; Azis, Abdul; abdullah, abdullah; Irawan, Shahril; Othman, Zulkifli
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17038

Abstract

The implementation of the Solar Panel Test Simulator design is carried out for testing in accordance with environmental temperature conditions. The difficulty of carrying out tests in actual conditions is the background for designing this tool. The intensity of heat from sunlight and also the variable ambient temperature influence the voltage released by solar panels. To obtain a solar panel voltage measurement data sheet like the situation above, it is necessary to design a simulation tool that is capable of being a reference to the actual situation. Peltier is useful for controlling temperature variations ranging from normal temperatures to below normal temperatures. Peltier is able to maintain temperature conditions until it is stable at 32 degrees Celsius by receiving light intensity. For light variations, researchers use halogen lamps which will function as heat providers. Solar light is capable of providing lighting intensity ranging from 0 - 100%. However, in this test we only use 3 conditions, namely light intensity of 30%, 60% and 100%. This test also aims to determine the effect of the voltage produced by solar panels on changes in light and also to determine the effect of the voltage produced by solar panels on changes in temperature and to determine the effect of changes in temperature on changes in light intensity. This tool is expected to be able to provide test results that can be used as a reference in measuring solar panels in real conditions.
Pemanfaatan Limbah Biomassa Sebagai Plastik Biodegradable Yang Diaplikasikan Pada Food Packaging Ransum Tni Aritonang, Sovian; Rhomadon, Fajar Ismail; Hapsari Subiakto, Amadea Kenyoning; Nismarawati, Ardine Kusuma
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.18455

Abstract

The use of conventional plastic in the manufacture of Indonesian National Army (TNI) ration packaging has become an unavoidable standard because it provides strength, resilience and durability which is very important for protecting food and other materials. However, the use of conventional plastic in making ration packaging has become an increasingly pressing problem, especially regarding environmental sustainability. To overcome this problem, conventional plastic must be replaced with environmentally friendly plastic (biodegradable plastic). The method used is a literature review by comparing the Indonesian National Standards with literature from various journals. The results of literature research show that there is no biodegradable plastic that meets SNI 7818:2014. The mechanical properties and biodegradability of biodegradable plastics are influenced by the concentration of additives such as plasticizers and fillers, such as glycerol and chitosan.
Performance Comparison Of Self Aeration Flotation Machine Vs Induced Air Flotation Machine With The Additional Effect Of Variation Of SiBX Dosage On % Recovery of Cu and Au At North Concentrator PT. X Papua Putra, Budhi; M. Soedarsono, Johny Wahyuadi; Ariyani, Ira
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.16941

Abstract

Comparison of the performance of self aerating vs induced water flotation machines with the effect of adding SiBX dose variations on % recovery of Cu and Au, so that it can be carried out to optimize the recovery process of Cu and Au at PT. X Papua. It was carried out at the Cl concentrator plant scale, using three types of SiBX dosage variations, namely 5 g/t, 10 g/t, and 15 g/t which were applied to both types of flotation machines. Furthermore, mineral assay and XRD tests were carried out. The results of % recovery of Cu and Au as a whole show that the self aerating flotation machine is able to remove Cu and Au more effectively than the water induced flotation machine for all coarse, medium, and fine mineral size fractions. Recovery of Cu and Au is influenced by the hydrodynamic properties of the two types of engines. The effect of adding variations in SiBX doses was less significant on % recovery of Cu and Au.
Analisis Lapisan Aluminium Pada Permukaan Baja Dengan Metode Twin-Wire Arc Spray Terhadap Laju Korosi Fahrezi, Wibi Adrian; ., Nurhadi; Hastuti, Sri; Pramono, Catur; Nurdin, Akhmad; Wibowo, Rheza Ari; Al Hassany, Ibnu Rosyid; Pandupradityo, Bramono
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.19691

Abstract

Electrical twin-wire arc spray is often used as protection from material components. The coating process aims to protect the coating from environmental disturbances. The quality of the coating yield is indicated by corrosion resistance. The spraying distance in the thermal spray process will affect the corrosion rate, morphological structure, and thickness. The purpose of this study is to analyze the effect of distance variations in the electrical twin-wire arc spray process with an aluminum coating on corrosion rate, morphological structure, and layer thickness in AISI 1020 steel. Tests are carried out for corrosion tests, scanning electron microscope (SEM), and layer thickness. The implementation of the study used experimental methods using distance variations of 150 mm, 250 mm, and 350 mm. The results of the study of the lowest corrosion rate value at a distance of 150 mm are included in the good category with a value of 0.13667 mmpy, the morphological structure of the layer using a closer distance obtains a smooth and dense layer, then for the highest layer thickness at a distance of 150 mm with an average of 317.16 μm. 
Efek Tipe NbRe Terhadap Sensitivitas Superconducting Single Photon Detector (SSPD) Dalam Penginderaan dan Komunikasi Kuantum Rahman, Aura Monalisa; Aritonang, Sovian
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17319

Abstract

The Single Photon Detector is employed in quantum computing, sensing, and communication technologies. NbRe, a superconductor, exhibits lower noise, energy gap, and minimum energy compared to silicon, resulting in higher sensitivity. NbRe can be found in the form of microstrips and nanostrips. Based on the data, NbRe with a microstrip cross-sectional area will have higher sensitivity and efficiency than NbRe with a nanostrip cross-sectional area. This is because the critical temperature (Tc), minimum energy (Emin), and thickness of NbRe microstrip are smaller than those of nanostrip, while its critical current density is larger. Based on literature review and calculations, it is determined that NbRe microstrip has Tc = 3.08 - 5.23K, Jc = 15.5x10^9 A/m², Emin = 0.017 eV, and a thickness of only 4 nm. In contrast, NbRe nanostrip has Tc = 6.77 K, Jc = 5x10^9 A/m², Emin = 0.28 eV, and a thickness of approximately 14.4 nm.
Studi Komparasi Karakteristik Mekanik Serat Alam sebagai Bahan Anti Peluru: Jurnal Review Haziza, Ellsa Putri; Aritonang, Sovian; ., Imastuti
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17326

Abstract

Indonesia has abundant natural resources, but if they are not optimized, they will end up as waste. Natural fibers come from plants, animals or minerals, standing out with certain advantages that differentiate them from artificial fibers. These advantages include the ability to decompose naturally (biodegradable), good strength and durability, and sustainable income through farming or capturing natural resources that produce fiber. The impact strength of composite materials combining natural fibers and synthetic fibers in ballistic material applications has grown rapidly. However, the use of synthetic fibers as reinforcement in composite materials has had a negative impact on the environment because they are difficult to decompose naturally and can cause long-term environmental disturbances. Therefore, utilizing natural fibers as reinforcement in composite materials is considered a good step. This update in research compares the characteristics of natural fibers in the use of ballistic materials. The natural fibers used are palm fiber, snake fruit midrib fiber, corn husk fiber, pineapple leaf fiber, water hyacinth fiber, hemp fiber. Ballistic material made from natural fibers
Studi Efektivitas Jumlah Data Pengukuran Nilai Potensial Terhadap Kinerja BEIA dalam Mendeteksi Lokasi Korosi Beton Bertulang ., Israr; ., affandi; Huzni, Syifaul; Fonna, Syarizal; Tanjung, Iqbal
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.20698

Abstract

Corrosion is a very serious problem. It could not be prevented due to natural events which trigger corrosion itself. Many failures and losses caused by suboptimal early prevention of corrotion, such as the sudden collapse of buildings and infrastructure which incurring loss and casualties. One methode that is widely used to detect corrosion is the Half Cell Potential Mapping methode. However, there is shortage interpretation of data in the methods who need to be considered. Then, the software who could detect early failures caused by corrosion is developing. On of them is Boundary Element Invers Analysis (BEIA). BEIA has succeeded in detecting the location of corrosion in reinforced concrete with 5% error percentage. However, it is necessary to increas its ability. This research aims to find the effect of the amount of potensial value measurement data on BEIA ability to detect corrosion in reinforced concrete. BEIA developed by combining the application of Boundary Element Method (BEM) and Particle Swarm Optimization (PSO). BEM used to calculate potential values on concrete surface, while PSO evaluates the cost function for detecting corrosion in reinforcing steel in concrete. This research wa conducted on reinforced concrete 3-dimensional geometry, namely length, widht and height. In the middle of the concrete there is reinforcement which has corrosion. The parameter of the amount of potential value measurement data was varied in order to get better input in improving the performance of BEIA. That were 5,10, 15 and 20. The simulation showed that the used of the potential value measurement data of 20 had less error percentage value obtained at 650 cm x 50 cm geometry was 0.2 %. These proves that the larger potential value measurement data could improved BEIA performance.
Karakteristik Pembakaran Difusi Campuran Bahan Bakar Minyak Kelapa Murni Dengan Bioaditif Minyak Cengkeh Fairuddin, Fairuddin; Riupassa, Helen; Nanlohy, Hendry Y.
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17499

Abstract

Biofuel derived from raw vegetable oil is considered a crucial alternative energy source to address the escalating fuel energy crisis due to the growth of industrial activities and the human population. The compounds present in raw coconut oil, including saturated fatty acids, monounsaturated fatty acids, polyunsaturated fatty acids, and glycerol, constitute the focus of this research. The combustion of raw coconut oil involves a complex reaction due to the presence of saturated chain bonds, necessitating additional substances to weaken the carbon chains and enhance the combustion rate. This study employs the suspended droplet combustion method to increase the contact between air and fuel, thereby improving the reactivity of fuel molecules. To boost the combustion rate of coconut oil droplets, a bio-additive in the form of clove oil is experimentally added. Research findings reveal that the compound eugenol in clove oil possesses aromatic properties and a non-symmetrical carbon chain geometry. This factor can potentially expedite effective collisions among fuel molecules, consequently improving the ease of fuel combustion. In conclusion, this research provides insights into the potential use of coconut oil as a biofuel, highlighting the role of bio-additives such as clove oil in enhancing combustion rate efficiency. The study contributes to our understanding of strategies that can be applied to optimize the utilization of biofuel derived from raw vegetable oil.
Grafen untuk Aplikasi Penyerapan Gelombang Radar Mikro: Dari Sintesis Graphene Oxide (GO) Berbasis Tempurung Kelapa Yamin, Muthi'ah Alfiyah; Aritonang, Sovian; Murniati, Riri
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.17352

Abstract

ABSTRACT  Radar systems detect objects using electronic signals. Radar Absorbing Material (RAM), especially graphene, increases radar wave absorption. Using coconut waste to make Graphene Oxide (GO) supports sustainability. It advances more efficient and sustainable radar wave absorption technology. This research is based on literary analysis. The method used in this research is a literature review and in this study will compare the reflection loss material graphene oxide as a radar absorber with other materials.  This research shows that GO synthesized with the Hummer method at 400°C has the best performance in radar wave absorption, competing with other materials such as CoTi1-xCexO3 and silicone rubber variations. This makes GO an attractive choice for radar wave absorption applications, especially on microwave frequencies.Keywords:Absorber Radar, Graphene Oxide, Coconut Waste, Hummer Method
Pengaruh Konsentrasi KOH Terhadap Karakteristik Dan Kapasitansi Elektroda Karbon Aktif Super Kapasitor Mahyuda, Maulana; Sirait, Ratni; Lubis, Ridwan Yusuf
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.19467

Abstract

Superkapasitor merupakan salah satu perangkat yang dapat menyimpan energi. Salah satu aspek yang dapat mempengaruhi tingkat keefektifan superkapasitor ialah luas permukaan elektroda. Sehingga karbon aktif dapat dijadikan elektroda kapasitor ialah karbon aktif. Pada penelitian ini telah dilakukan pembuatan karbon aktif yang berbahan dasar kulit singkong  sebagai bahan elektroda superkapasitor. Karbon aktif dibuat dengan suhu karbonisasi sebesar 200oC dengan memvariasikan konsentrasi KOH yakni sebesar 2,5 M, 3 M, dan 3,5 M. Penelitian ini menggunakan metode eksperimen yang  bertujuan untuk mengetahui pengaruh variasi konsentrasi KOH terhadap karakteristik dan kapasitansi elektroda karbon aktif kulit singkong. Bedasarkan hasil analisis XRF didapatkan bahwasanya karbon aktif kulit singkong didominasi oleh senyawa oksida logam K2O dan SiO2.. Luas permukaan karbon aktif tertinggi terdapat pada sampel karbon yang diaktivasi dengan konsentrasi KOH  3,5 M yaitu 12,835 m2/g. Dan nilai kapasitansi tertinggi ialah pada karbon aktif dengan aktivator KOH 3,5 M yakni sebesar 456,5 µF

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