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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 250 Documents
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Rancang Bangun Troli Multifungsi Kapasitas 100 Kg Rahmatullah, Rahmatullah; M, Muharnif; Nasution, Arya Rudi; Barus, Syahputra; Octariza, Gintara
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.26784

Abstract

Technology to facilitate human activities in lifting and transporting work continues to develop. Trolleys are tools that can help move goods. The design of the trolley is planned to be able to transport simply but strong and stable. This trolley is made using plate materials, iron pipes and others in its manufacture. The materials are selected to ensure durability against heavy loads. The trolley lifting system is an electrical system that includes a battery, an electric motor, and a switch to control the trolley automatically. The trolley is made using 19 mm iron pipes, wheels, 3 mm iron plates, a transport body frame made of 58 mm iron pipes and also the drive or carrier is a 5 mm steel sling with 2 pcs electric motor batteries with a power of 12 volts each. The trolley made can carry an effective load of around 100 kg, but its performance will decrease as the load increases. Future suggestions are the use of lighter but stronger materials such as aluminum or composites, the use of larger capacity and efficient electric motors, and testing with a wider variety of loads to understand the limits and maximum performance of the trolley. Training in proper use and maintenance of the trolley is recommended to ensure optimal condition and maximum service life.
Studi Eksperimental Pengaruh Parameter Pemakanan terhadap Kekasaran Permukaan Baja AISI 1045 pada Proses Pemesinan Bubut Harahap, Jagodang; Maulidin, Maulidin; Saputra, Edi; Tanjung, Iqbal; Nasution, Arya Rudi
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.28323

Abstract

ABSTRACKThe quality of machining results in turning operations is strongly influenced by the surface finish produced. Surface roughness is a critical parameter for assessing machining performance as it directly affects wear resistance, efficiency, and the service life of components. Medium carbon steel AISI 1045 is widely applied in manufacturing industries, particularly for shafts, gears, and structural elements, due to its favorable mechanical properties. However, its surface finish is highly sensitive to machining parameters, making the selection of cutting conditions essential. This study aims to evaluate the effect of cutting speed and depth of cut on the surface roughness of AISI 1045 steel using conventional turning. Cylindrical specimens measuring Ø30 mm × 80 mm were machined with a carbide cutting tool under three cutting speeds (127, 225, and 510 rpm) and four depths of cut (0.2, 0.4, 0.4 and 0.6 mm). Surface roughness was measured using a Mitutoyo SJ-310 profilometer at four reference points, and the average Ra value was taken as the representative result. The findings reveal that the lowest cutting speed (127 m/min) combined with the smallest depth of cut (0.2 mm) produced the smoothest surface with Ra = 2.388 µm. In general, increasing cutting speed and depth of cut led to lowew roughness values, with the maximum recorded at 9.760 µm under certain extreme conditions. Several anomalies were also observed at high cutting speeds due to vibration and process instability. In conclusion, proper selection of machining parameters is crucial to achieving optimal surface quality while maintaining process efficiency. These results may serve as a practical reference for manufacturing industries in optimizing the turning of AISI 1045 steel.
Produksi, Karakteristik, dan Aplikasi Nanomaterial Fullerena Ridhoi, Muhammad Fachmi; Aritonang, Sovian
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.26610

Abstract

This review provides an in-depth exploration of C60 fullerene-based polymers and their synthetic approaches, structural properties, and applications across various scientific fields, including material science, biomedicine, and nanotechnology. Starting from foundational developments in the synthesis of fullerenes, the review details the structural diversity of fullerene-based polymers, from cross-linked and end-capped polymers to more complex architectures such as star-shaped and side-chain polymers. It also discusses characterization techniques such as TEM, SEM, AFM, and DLS for assessing particle size, morphology, and distribution. Recent advancements in photovoltaic applications and supramolecular assemblies of fullerene-containing polymers illustrate the versatile applications of these materials. The review concludes with a discussion of fullerene’s potential in various applications, from cosmetics and gas adsorption to biomedical applications like drug delivery, antioxidant therapies, and diagnostics.
Perkembangan Radar Modern: Integrasi Antena Adaptif, Pemrosesan Sinyal Cerdas, dan Aplikasi SAR serta RCS Putri, Salsabila Husniah; Aritonang, Sovian
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.27046

Abstract

This research aims to structuredly examine the latest developments in radar technology, combining adaptive antenna design, intelligent signal processing, and the use of Synthetic Aperture Radar (SAR) and Radar Cross Section (RCS). This study aims to address the research gap on how radar hardware innovations can be fully integrated with artificial intelligence-based algorithms, a topic that remains largely unexplored in the current literature. The method used is a Systematic Literature Review (SLR), with data from leading Q1 international journals indexed in Scopus, such as IEEE Transactions on Antennas and Propagation, IEEE Transactions on Signal Processing, IET Radar, Sonar Navigation, and Remote Sensing of Environment. The analysis process includes article searches, application of entry-exit rules, retrieval of key information, topic clustering, and comparison of methods and results to identify key trends and remaining research gaps. The results of the study indicate that the main direction of modern radar research emphasizes the integration of adaptive antennas using metamaterials and phased-array systems, plus the application of machine learning and deep learning to detect and classify targets. However, significant challenges remain in optimizing the capabilities of learning models for general use across diverse environmental conditions, as well as effectively integrating hardware and intelligent algorithms. The key contribution of this research is the creation of a conceptual framework for modern radar that connects adaptive antenna components, artificial intelligence-based signal processing, and cross-disciplinary applications such as defense, autonomous vehicles, and earth monitoring. This study is expected to serve as a foundation for further research on the development of adaptive radar systems utilizing artificial intelligence and advanced materials, while also supporting strategic policy directions in the fields of defense and environmental surveillance.
Effectiveness of Ceiling Cassette Air Conditioner Placement on Building Comfort and Energy Efficiency: A Systematic Literature Review Dharma, Budi -; Siregar, Ahmad Marabdi
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.28067

Abstract

The installation location of ceiling cassette air conditioning units is a critical factor in Heating, Ventilation, and Air Conditioning (HVAC) system design, particularly in public service buildings where high thermal comfort and energy efficiency are essential. This study aims to systematically examine the influence of ceiling cassette air conditioner placement on airflow distribution, thermal comfort, and building energy performance through a Systematic Literature Review (SLR) approach. The review analyzes peer-reviewed, open-access scientific articles published between 2020 and 2025, selected using a structured and transparent literature screening protocol. The synthesis results indicate that improper unit placement can lead to uneven temperature distribution, increased thermal discomfort, and higher energy consumption. Conversely, strategic placement that accounts for room geometry, airflow orientation, and occupied zones consistently improves thermal uniformity and enhances HVAC energy efficiency. These findings highlight that ceiling cassette unit placement should be considered an integral component of HVAC design rather than a secondary technical decision. This study contributes to the existing body of knowledge by providing evidence-based insights that support more effective and sustainable HVAC design practices for both researchers and industry practitioners.
Karakteristik Minyak Atsiri Dari Kulit Jeruk Manis, Kulit Jeruk Purut, Dan Kulit Jeruk Bali Dengan Metode Distilasi Mukhtar, Muharnif; Ridho, Davidsyah; Suherman, Suherman; Khair, Hadriman
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.27260

Abstract

The distillation method is one way to produce essential oils from various parts of plants such as flowers, stems, bark and fruit, seeds and roots. This process has the advantage of oil purity and lower costs. The selection of sweet orange peel, kaffir lime peel and grapefruit peel as raw materials for making essential oils is due to their easy availability with fairly good essential oil characteristic quality. This study aims to obtain the best characteristic quality among the three types of peel used so that it is suitable for its use. The characteristics of essential oils analyzed include yield, acidity level (pH), water content, aroma resistance and color. The quality of essential oil characteristics greatly influences the use of essential oils in the industrial world such as food, beverages, perfumes, medicines and cosmetics. Based on the results obtained, kaffir lime peel produced the highest yield of 1.24%, the lowest water content of 9.21 indicating quality essential oil, the highest acidity level (pH) with a pH of 4.59 and a slightly yellowish clear color.
Desain dan Manufaktur Sistem Pemberian Pakan Ikan Otomatis Berbasis IoT dengan Mikrocontroller ESP32 dan Integrasi Tenaga Surya Irawan, Hery; Suryowinoto, Andy; Broto Sasongko, Sukendro; Widianto, Angger Eka
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.27031

Abstract

Fish farming in Indonesia has significant potential, both for consumption and ornamental purposes. However, one of the main challenges in fish farming is the manual feeding process, which is time-consuming and requires considerable labor. To address this issue, this research develops an automated fish feeding device based on the Internet of Things (IoT). This study aims to design and test an automatic fish feeding device that uses the ESP32 microcontroller connected to IoT. The system allows for automatic and controlled feeding, based on time settings and the required amount of feed. The methods employed in this research include the design of hardware and software integrated with IoT sensors, which can be programmed to dispense feed at specific distances and times. Testing was conducted to measure feed dispensing distance, energy efficiency, and labor cost savings. The test results indicate that the device is capable of dispensing feed up to a distance of 5 meters, with feed particle sizes ranging from 4-5 mm and the motor running at 12,000 rpm. The system also utilizes solar panels as an energy source, reducing dependence on electricity. The findings of this study demonstrate that the IoT-based automatic feeding device can enhance operational efficiency, reduce labor costs, and decrease electricity consumption, making it an innovative solution suitable for the fish farming industry in Indonesia.
Kajian komparatif tentang korosi pada Point-Absorber dan Pelamis dengan analisis kontekstual di Indonesia  Salsabila, Vedora Aprillia; Aritonang, Sovian
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.27044

Abstract

Global energy demand is rising while fossil fuel reserves are declining, making renewable energy a critical solution. Ocean wave energy, with a potential of around 2 TW, is a promising alternative, yet the corrosive marine environment challenges the durability of Wave Energy Converters (WEC). This study uses a Systematic Literature Review (SLR) to compare the corrosion resistance of two WEC types, Point-Absorber and Pelamis, and assess their suitability for Indonesia. Results show that Point-Absorbers are prone to corrosion fatigue, whereas Pelamis devices are more vulnerable to crevice corrosion. Appropriate material selection, such as 316L stainless steel or carbon fiber composites, along with corrosion protection, is essential, and site-specific factors wave potential, grid proximity, and environmental impact must be considered for sustainable WEC deployment.
Analisa Kerusakan Roller Bearing pada Blower Induced Draft Fan Boiler Takuma pada Pabrik Kelapa Sawit XYZ Simarmata, Firman Paniroi; Abdilah, Tomi; Suardi, Suardi
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.27345

Abstract

A steam boiler is an energy conversion machine that transforms water into steam through heating. The steam produced can drive a turbine, and the turbine then converts the thermal energy from the steam into mechanical energy. This mechanical energy is subsequently used to operate a generator. The boiler can operate properly with the support of several components, one of which is the fan, which provides thrust and air suction during the combustion process, thereby enhancing the performance of the power generation system. Fans are utilized to increase the efficiency of power plants because they maximize thrust at the fuel inlet channel, save fuel, and support complete combustion. Without a fan, it would be difficult to achieve thermal efficiency in the boiler. The Induce Draft Fan is a type of centrifugal blower whose rotating shaft is supported by roller bearings, which often encounter problems or failures. Damage to the roller bearing in the Induce Draft Fan will affect the blower’s performance; therefore, the author conducted an analysis of roller bearing failure on the Induce Draft Fan of the Takuma Boiler. The research method used is qualitative analysis, namely a study based on the systematic relationship between the variables under investigation. The aim of the analysis is to interpret the relationship among variables so that they can be used to answer the problems formulated in the study. The variables examined in this research are bearing vibration and bearing lubrication. The vibration data of the roller bearing on the Induce Draft Fan of the Takuma Boiler are as follows: outer axial position = 32.5 mm/s, inner axial position = 37.6 mm/s, outer vertical position = 15.8 mm/s, inner vertical position = 33.6 mm/s, outer horizontal position = 13.1 mm/s, and inner horizontal position = 49.9 mm/s. These values exceed the threshold limits of 7.10 mm/s and 11.20 mm/s (based on ISO 10816-1 vibration standards). Thus, the high vibration levels of the roller bearing in the Induce Draft Fan of the Takuma Boiler are the main factor causing premature bearing failure
Studi Eksperimental Pengaruh Perlakuan Alkali terhadap Kekuatan Tarik Serat Tunggal dan Ketahanan Robek Kain Tenun Serat Daun Nanas Badri, Muftil; Silaban, Vrengky Roberto; Dalil, Mohammad
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.26494

Abstract

The tensile strength and tear resistance properties of pineapple leaf fiber can be improved as a new woven fabric product. This paper aims to experimentally investigate the effect of variations in alkali treatment using sodium hydroxide on the tensile strength of single fibers and tear strength of pineapple leaf fiber woven fabrics.  Alkaline treatment was carried out with variations in sodium hydroxide concentration of 2%, 4%, 8%, 10% and non-alkaline. Alkali treatment on single pineapple leaf fibers affected the tensile strength. The results showed that single pineapple leaf fibers non-alkali treatment had a tensile strength value of 80 N/mm2 and the alkali treatment with a percentage of 8% had the highest tensile strength of 108.57 N/mm2. Alkali treatment on pineapple leaf fibers affects the tear force of woven fabrics made from pineapple leaf fibers. The results showed that non-alkali-treated woven fabrics had a tear force of 47.40 N and the alkali treatment with a percentage of 8% experienced the highest force of 53.98 N. Single pineapple leaf fibers with 8% alkali treatment contained 87.78% cellulose. This shows that the effect of alkali on pineapple leaf fibers can increase the percentage of cellulose, resulting in higher mechanical properties of the fiber. At an alkali percentage of 10%, mechanical properties decreased.

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