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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 Penambahan Titanium Terhadap Kekuatan Material Baja Sebagai Bahan Shielding Alutsista Pertahanan Ahmada, Mufti Labib; Aritonang, Sovian; Murniati, Riri
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.v7i1.17309

Abstract

The addition of titanium to steel materials has been a significant research focus in the metallurgical industry. This research aims to investigate the effect of titanium addition on the mechanical and structural properties of steel. Titanium is an interesting element in this context because it has properties that can improve the performance of steel, such as strength, corrosion resistance, and resistance to high temperatures. The addition of titanium to various types of steel has been shown to increase their strength and mechanical properties, primarily by forming titanium carbide or sulfide deposits that reduce grain growth and increase toughness and high temperature resistance. This could open up opportunities to develop high-strength steel with the addition of titanium for applications that require superior mechanical properties, such as for shielding defense equipment.
Analisa Kekasaran Bearing 22224 Dan 29420 Mesin Screw Press Di PTPN XYZ Mahyunis, Mahyunis; Effendi, Zulham; Renaldy, Muhammad Aziz
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.v7i2.19507

Abstract

Palm Oil Mill (POM) is a plantation company that specializes in palm oil commodities with outputs in the form of CPO (Crude Palm Oil) and PK (Palm Kernel). At PTPN xyz there is a machine for extracting palm oil, namely a screw press, in the screw press there are bearing that supports the perfomance of the machine. This research aims to determine the surface roughness of the bearing, a comparison of the roughness value with the ISO (International Standard Organization) as well as the life time data of the bearing material which is adjusted to its specification. The research method used in this study is a qualitatif descriptive method using primary and secondary data. From the results of this research, the research of the analysis of the surface roughness values of bearing 22224 and 29420 were obtained, namely that the bearing experienced a decrease in roughness values from international standard organization standard using roughness tester, suffcorder SE300, Model AS-300, standard tool JIS2001R, series number MEX08756-36, Cut off 2,5mm, speed 0,2mm in µm (Micronmeter).
Drone Berbahan Komposit Serat Rami Dengan Karbon Aktif-Barium M-Heksaferit Sebagai Radar Absorbing Material Aritonang, Sovian; Hijrianisa, Alya; Pratita, Elda; Ningrum, Hanifa Setya; Pangestu, Bintang Brilliant
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.v7i1.17283

Abstract

Radar is a crucial tool in military applications for detecting enemy objects in its vicinity, but its presence can pose a risk of being detected by adversaries. Therefore, this research focuses on the development of Radar Absorbing Material (RAM) using activated carbon obtained from cassava peel and Barium M-Hexaferrite. The research results indicate that this combination can be used as a protective layer on military drones made of composite hemp fibers, enhancing the drone's ability to absorb radar waves, thus reducing the risk of detection by adversaries. This improves the effectiveness of military operations and contributes to environmental preservation through the use of eco-friendly materials. 
Rancang bangun mesin planetary ball mill type vertikal skala laboratorium dengan variasi kecepatan putaran Pancarana, I Dewa Made; Waisnawa, I Gede Nyoman Suta; Firdaus, Muhammad Nabil
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.v7i2.19704

Abstract

This paper discusses the design and manufacture of a laboratory-scale vertical planetary ball mill machine with variations in rotational speed. The purpose of making this planetary ball mill machine is to support the completeness of equipment in the laboratory at the Department of Mechanical Engineering, Bali State Polytechnic.This vertical type planetary ball mill machine has dimensions of 300 x 300 x 550 mm and two stainless steel stirring tubes with a capacity of 500 ml each. The engine frame is made of hollow galvanized iron measuring 3 x 3 cm. This vertical type planetary ball mill machine is driven by an AC 125 watt 220 volt 2800 rpm electric motor. The transmission system uses one straight gear (driving gear) and two straight gears (driven gear). The driving gear is mounted on the motor shaft, while the driven gear is attached to each stirrer tube. To adjust the amount of rotation, a 2000 W/220 V AC motor dimmer is used. Tests on the vertical planetary ball mill machine were carried out 8 times using 200 grams of wheat flour and 50 grams of water (4:1) for each experiment. Four times the experiments were carried out at rotational speeds of 250, 500, 750, and 1000 rpm for 5 minutes each and four times the experiments were carried out at rotational speeds of 250, 500, 750, and 1000 rpm for 10 minutes each. The test results show that a homogeneous mixture occurs faster with increasing rotations with a fixed time or lengthening the rotation time in each round.
Sintesis BaM/PAni Doping Cu Optimasi Sifat Radar Absorbing Material Pada Aplikasi Pelapisan Alpalhankam Aritonang, Sovian; Xaviera, Allodya Nadra; Devina, Ardelia; Br Panjaitan, Thesalonika; Nareswari, Vania Agatha
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.v7i1.17317

Abstract

Defense technology known as stealth technology aims to reduce the response of electromagnetic waves emitted by radar so that the position or location of an object is not detected. Barium Hexaferite has properties as a Radar Absorbing Material (RAM). Research on radar absorbing matrial from barium hexaferite already exists, but those using cu doping do not yet exist. In order to increase the effectiveness of its absorption, Barium Hexaferite is doped with Cu metal synthesized by coprecipitation method. Aniline polymerization was carried out with BaM to form BaM/PAni composite. Characterization of composite synthesis samples and coating results were carried out by SEM, FTIR, LCR-meter, and VNA to identify chemical bonds, electrical conductivity properties, microstructure, and reflection loss properties of RAM composite samples. Based on the results of previous research, the optimal absorption of multilayer coatings on steel with a reflection loss of -49.028 dB was obtained with an absorption frequency of 8.2 GHz. The addition of Cu doping is expected to improve the material's ability to absorb radar waves and reduce object reflections.
Study Eksperimental Karakteristik Penyalaan Minyak Kelapa Sebagai Bahan Bakar Alternatif Dengan Penambahan Bioaditif Minyak Kayu Putih Timang, Rison Sando; Riupassa, Helen; Nanlohy, Hendry Y.
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.v7i2.18251

Abstract

The limited availability of diesel oil encourages efforts to find new energy sources as alternative diesel fuels. Biodiesel can be extracted from various agricultural products, for example, coconut oil. As a tropical country, Indonesia is a very effective and potential country as a coconut producer. Vegetable oil has a higher viscosity than diesel oil. Compose bio-oils with various fuels additive is the way to reduce viscosity values, among others, by combining nanocarbon and metal catalysts. This study goals to know the characteristics of burning coconut oil as an alternative fuel with the addition of eucalyptus oil; and how long the combustion process takes from the starting point to the end. The results showed that adding eucalyptus oil to coconut oil can reduce the weakening of the carbon chain and increase the combustion temperature. The combustion efficiency of this coconut oil mixture varies depending on the amount of eucalyptus oil added, resulting in faster fuel combustion and a more powerful explosion. The color of the fire is an essential factor in ensuring that this mixture can be used safely and efficiently.
Pemanfaatan Jamur Tiram Putih (Pleurotus Ostreatus) Sebagai Biomaterial Konstruksi Militer Ramah Lingkungan Aritonang, Sovian; C Lubis, Astrid Blandina; Ramadhanty, Chrisna Prawiradhiva; Hamidah, Fikriyah; Hutama, Raihansyah Raja
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.v7i1.17289

Abstract

Developments in the 21st century require the development of technology, one of which is construction material technology. The construction material generally used is conventional concrete on the market. However, in its use, conventional concrete is not environmentally friendly. Therefore, biomaterials were developed from the use of white oyster mushrooms with various media. This study of biomaterials develops mycelium using three types of media, namely rice husk waste, corn stalk waste and wood dust waste. The aim of this research is to obtain optimal media for the growth of white oyster mushrooms. The cellulose content of corn stalks, rice husks, and sawdust were 33%, 38%, and 41%, respectively. The research results showed that sawdust waste media was the best medium as a fungal growth medium. Wood dust waste with a cellulose content of 41% can produce the growth of mold as high as 8.62 cm. In rice husk waste media with a cellulose content of 38%, 5.62 cm was obtained. Then, on corn stalk waste media with a cellulose content of 33%, fungal growth was obtained as high as 0.632 cm
Kajian Review Aplikasi Serat Sisal (Sisal Fiber) Sebagai Alternatif Komposit Polimer Fauziah, Anis Khoirun Nisa Nur; 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.v7i2.17364

Abstract

Sisal fiber is a natural fiber obtained from the sisal plant (agave sisalana). In addition to the low price of sisal fiber, its strength is legendary with its high tensile strength and superior stiffness. When used as reinforcement in polymer composites, these fibers can provide additional strength to the material. This makes the composite more resistant to compression, tension and bending. Because it has good strength and resistance to pressure, sisal fiber is often used as a reinforcement in making polymer composites. Sisal fiber is also often used in making ropes, nets, cables and other products that require mechanical resistance. The potential for using sisal fiber in various industries is very large. This fiber can be used as a composite for automotive materials, building construction materials, the shipping industry, other equipment, and even packaging. Sisal fiber shows excellent resilience and strength when tested together with other components. Therefore, sisal fiber has special properties and is often used as an alternative to natural fibers in polymer composites.
Analisa Kekasaran Permukaan Besi ST-41 Hasil Pembubutan Lurus Pengaruh Cairan Pendingin Dengan Alat Uji Surface Roughness Abdilah, Tomi; Sinurat, Fadlah Kaumenni
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.v7i1.17091

Abstract

Coolant plays a specific role in the machining process of lathe machines. Aside from extending tool life, in some cases, coolants can reduce forces and refine the surface of the produced products. This research aims to determine the influence of different coolant usage on the surface roughness of cylindrical hinge turning from ST 41 iron. This material was chosen due to its frequent use in machine tooling and its economical price. The research employed an experimental design conducted in the laboratory using a quantitative method. In the process of multi-pass turning, three hinge workpieces were machined using three types of coolants. Hinge workpiece A used pure water coolant, hinge workpiece B used water coolant with the addition of cutting fluid, and hinge workpiece C used lubricant coolant. All three hinge workpieces were machined through cylindrical turning. The results of the research indicate that the average surface roughness values varied among coolants. The lowest average surface roughness was achieved using the water coolant with cutting fluid mixture (1.254 µmm), while the highest was observed with the oil coolant (1.850 µmm). The average surface roughness value for the coolant type was intermediate (1.489 µmm).
Analisis Perbandingan Metode Quenched Terhadap Sifat Mekanik Baja Tahan Karat Austenitik Berbasis Big Data Leni, Desmarita; ., Islahuddin; ., Mulyadi; ., Hendra; Sumiati, Ruzita
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.v7i2.18025

Abstract

A profound understanding of the mechanical properties of stainless steel is crucial in modern industrial applications. However, comprehensively understanding the mechanical properties of stainless steel requires sufficient testing to gather data on its characteristics. In this research, an analysis was conducted on the influence of chemical composition and heat treatment on the mechanical properties of stainless steel, utilizing data from the Material Algorithm Project (MAP), which is a material database. The dataset comprises 986 samples, encompassing 11 chemical elements, variations in quenching, and 3 mechanical properties of stainless steel. The data was analyzed using descriptive statistics and Pearson correlation to examine the relationships between these variables. The research results indicate a negative correlation of -0.35 between temperature and Yield Strength (YS) in samples of steel undergoing air cooling. The YS values in this treatment can reach 300 MPa at temperature combinations ranging from 1300 K to 1330 K, with heating times ranging from 180 seconds to 420 seconds. Meanwhile, water cooling exhibits a wide range of cooling times and relatively high temperatures. Combinations of time between 1400 seconds and 2200 seconds and temperatures between 1300 K and 1400 K result in YS ranging from 240 MPa to 260 MPa. This research suggests that experimental material testing datasets not only play a passive role in validating an experiment but can also be actively utilized in the analysis and design of materials more effectively.

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