cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ahmad Marabdi Siregar
Contact Email
rmme@umsu.ac.id
Phone
-
Journal Mail Official
rmme@umsu.ac.id
Editorial Address
-
Location
Kota medan,
Sumatera utara
INDONESIA
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 33 Documents
 1   2   3   4 
Search results for , issue "Vol 8, No 2: JULI 2025" : 33 Documents clear
Analisis Literatur Material Energetik Berbasis Nano-Komposit untuk Propelan Hibrida pada Roket Militer Sitompul, Robby Andreas Iskandar; Ruyat, Yayat; ., Marsono; Setyanjana, Andre Yoan
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.22479

Abstract

This research aims to analyze the literature on nano-composite-based energetic materials that can be used in hybrid propellants for military rockets. Hybrid propellants, which combine the properties of liquid and solid propellants, offer advantages such as improved combustion control and higher energy efficiency. In this context, nano-composite materials, such as metal nanoparticles (aluminum, boron) combined with oxidizers and polymer fuels, have great potential to improve the performance of hybrid propellants. This literature review identifies how the unique properties of nano-composites, such as large surface area, high reactivity, and the ability to control particle distribution, can accelerate the combustion rate and result in higher thrust. In addition, technical challenges such as controlling nanoparticle agglomeration, thermal stability, and environmental issues are discussed. This research provides an in-depth understanding of the application of nano-composite technology in the development of hybrid propellants and demonstrates the potential of these materials to improve the performance and safety of military rocket propellants. The findings are expected to serve as a basis for further research and development of more efficient hybrid propellants in the defense field.
Efektivitas Adsorben Berbasis Alginat Dan Karbon Aktif Ampas Kopi Dalam Menurunkan Kadar Cod Limbah Cair Industri Tahu Aisyah, Siti Nur; Daulay, Abdul Halim; Ong, Russell
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.23222

Abstract

Oxygen Demand (COD), requiring treatment before disposal into the environment. This study aims to evaluate the effectiveness of an adsorbent based on coffee waste-derived activated carbon and sodium alginate in reducing COD levels in tofu wastewater. The activated carbon used has been tested for quality and meets the Indonesian National Standard (SNI 06-3730-1995). The remediation process was conducted using five different adsorbent composition variations. The results showed that the combination of coffee waste-derived activated carbon and sodium alginate significantly reduced COD levels, achieving a maximum reduction efficiency of 90.55% at the optimum variation (Sample E). The adsorption mechanism involving alginate polymers and the porosity of activated carbon contributed to the effective removal of organic compounds from the wastewater. Based on the analysis, this method has proven to be effective in reducing COD levels, making it a potential environmentally friendly alternative for treating tofu industry wastewater.
Studi Eksperimental Rancang Bangun Alat Pencetak Briket Berbasis Dinamo Servo Kapasitas 6 Kg Lekatompessy, Frendris Allesandro; Kusumawardana, Ahmad Rizal Nurul; Dayera, Disabella
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.24096

Abstract

Research on the design of a servo dynamo-based briquette printer is a relevant research topic in the development of briquette production technology to support the utilization of biomass as a sustainable alternative energy source. The purpose of this research is to design a servo dynamo-based briquette printer with a capacity of 6 kg using the experimental method, where the test parameters are machine performance, printing operational parameters and briquette quality. The research results obtained are a briquette printing machine made with overall system dimensions of 23 cm high, 50 cm long and 25 cm wide, using a servo dynamo with a power capacity of 550 watts and a gearbox (ratio 1: 60). The results obtained are that the engine torque value obtained is 60 N.m and the maximum speed of 60 RPM has a machine efficiency value of 75.4%, where the high efficiency value contributes to more efficient energy consumption and has stable productivity, which is for a capacity of 6 kg capable of producing 180 briquettes for 12.32 minutes with an average production time per briquette of 4.2 seconds. The quality of the briquette test results from the machine made has a moisture content of 6.25% and a briquette density of 533.33 Kg⁄m3. Overall, the use of servo dynamo in the briquette molding machine is able to improve production efficiency and has fulfilled SNI 01-6235-2000.
Perbandingan Analisis Struktur Dan Sifat Mekanik Material Komposit Dari Weave Carbon Fiber & Chopped Carbon Fiber Jamil, Khoirul Fajril; Aritonang, Sovian
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.25155

Abstract

In this paper, the structure and mechanical properties of Weave Carbon Fiber and Chopped Carbon Fiber are compared. Both of these carbon fibers are used as composite materials for defense equipment and automotive materials applications. Weave Carbon Fiber is a regular woven carbon fiber structure, which provides high tensile strength and elasticity, making it suitable for applications that require structural stability and balance as well as resistance to deformation. On the other hand, Chopped Carbon Fiber is short fibers entangled in the matrix and distributed randomly so that it has a better level of impact resistance but lower tensile strength. 2D manufacturing involves tensile testing, flexural testing, impact testing, and hardness measurements Strain 2D Weave Carbon Fiber has a strength of up to 500 MPa and an elastic modulus of up to 25 GPa, making it suitable for applications that require high mechanical strength Fiber fraction test Chopped Carbon Fiber shows the highest fiber fraction impact resistance of 1668 J/m at 8% fiber fraction but decreases at high fiber fraction. Weave Carbon Fiber has small deflection and good load resistance compared to Chopped Carbon Fiber. This journal can provide insight into the selection of the right material for industries that require high-strength but also lightweight materials. As planned, the selection of such materials is largely determined by the specific application desired.
Pengaruh Variasi Tipe Sambungan Las SMAW pada Baja Karbon Rendah terhadap Uji Tarik dan Uji Impact Azimansyah, Rafidan; Mufarida, Nely Ana; Bahri, Mokh. Hairul
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.24931

Abstract

This study was conducted to examine the effect  various fusing  joint types over the tensile force  and impact toughness of low carbon metal SS400 utilise Shielded Metal Arc Welding (SMAW) method. Three joint types were tested double Bevel groove, double V groove, double U groove, using 100A current and E6013 electrode with a diameter of 2,6 mm. The test were conducted at the state polytechnic of Malang. The tensile test results showed that the double Bevel joint had the highest tensil strength, with a maximum value of 11.626 Mpa. Meanwhile, the umpact test revealed the highest energy absorption at 127.468 Joules or 2.12 Joules/mm2 for the same joint type. The study concludes that the double Bevel groove joint provides the best mechanical performance for SS400 steel, making it the most recommended option for applications requiring high resistance to tensil and impact loads.
Pengaruh Variasi Durasi Waktu Injeksi Oksigen Terhadap Performansi Insinerator Dual Chamber Limbah Medis Darma, I Wayan Arya; Winaya, I Nyoman Suprapta; Pratama, I Putu Angga Yuda; Sanatana, I Ketut Sakya
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.24923

Abstract

Incineration is an effective waste processing method, especially for medical waste which is B3 waste. The high temperature combustion process in incineration is expected to be able to reduce medical waste optimally. However, emissions produced during the incineration process can pollute the surrounding environment and harm health. So it is necessary to develop incineration methods to reduce exhaust emissions but still be able to reduce medical waste optimally. In this research, additional oxygen injection was carried out in chamber 2 of the dual chamber medical waste incinerator by varying the duration of the oxygen injection time with the aim of obtaining optimal performance and reducing the resulting exhaust emissions. The research was carried out using medical waste weighing 1 kg with variations in the duration of oxygen injection, 2, 3 and 4 minutes. The research results show that increasing the duration of oxygen injection time can increase combustion efficiency, increase the temperature in chamber 2 and reduce the resulting exhaust gas emissions.
Desain Perancangan Mesin Pemotong Kentang Multifungsi Rohman, Arif; Saputra, Trisma Jaya; Dewi, Rany Puspita
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.23876

Abstract

We often encounter potatoes in eating places and restaurants that have been made into ready-to-eat food because they are easy to process into various kinds of food, one of which is french fries. The aim of this research is to produce a design for a multifunctional potato cutting machine that is efficient and portable. The concept refers to the design process of designing a machine by determining the dimensions, size and constituent components displayed on the working drawings. The results of this multifunctional potato cutting machine design resulted in the design of machine components such as a potato funnel hopper with dimensions of 300 mm x 80 mm x 222 mm, a potato pusher with dimensions of 80 mm x 114 mm, and the main frame of the machine with dimensions of 421 mm x 300 mm x 380 mm. Three variations of cutting knives consisting of flat, long/stick-shaped and soft-shaped cutting knives. The knife driver used is an electric motor with a power of 125 watts, blade rotation speed of 700 rpm, and another drive transmission. Overall, the results of this design produce a design drawing for a potato cutting machine with dimensions of 421 mm x 300 mm x 544 mm, so that this machine is more efficient and portable.
Komparasi Ketahanan Erosi dan Korosi pada Coating Hidrofobik Sol-Gel dan Silika-PDMS untuk Logam Alloy Putra, I Gede Gilang Taruna; Aritonang, Sovian
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.25159

Abstract

Corrosion in metal alloys such as aluminum and carbon steel poses a major challenge in industries like aerospace, marine, and automotive, where such materials are frequently exposed to harsh environments. Hydrophobic coatings have emerged as promising solutions to enhance corrosion resistance. Among them, sol-gel and silica-PDMS coatings stand out due to their specific advantages. Sol-gel coatings are known for their excellent corrosion and erosion resistance, strong adhesion, and high mechanical durability, making them suitable for aggressive environments. On the other hand, silica-PDMS coatings provide superior hydrophobicity, ease of application, and flexibility, though with moderate corrosion resistance. This paper compares the performance of both coatings in terms of their corrosion and erosion resistance, application methods, and environmental suitability. The findings indicate that sol-gel coatings outperform silica-PDMS coatings in corrosion and erosion resistance, while silica-PDMS is more favorable for applications requiring high water repellency but in less corrosive conditions. Future research is recommended to optimize the formulation of both coatings and investigate hybrid solutions that combine the strengths of each material.
Pengaruh Sodium Benzoat Terhadap Ketahanan Warna Pewarna Alami Dari Kulit Alpukat Terhadap Cahaya Dan Pencucian Nisrina Zahrah, Firyal; Rizkia, Vika; Djonaedi, Emmidia
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.24917

Abstract

Synthetic dyes in the textile industry are toxic and pollute the environment. As an alternative, natural dyes from avocado skin (Persea americana) have the potential to be used because they contain phenolic compounds such as flavonoids and tannins. However, its color stability is still a challenge. This study aims to evaluate the color stability of avocado skin pigments on cotton fabrics, with and without the addition of sodium benzoate as a stabilizer. The pigments were extracted through maceration using 96% ethanol, then applied to cotton fabrics and tested against light exposure and washing. Analysis was carried out on the parameters ΔE, Optical Density, and CMYK. The results showed that samples with sodium benzoate were more stable in color (ΔE = 1.34) than without stabilizer (ΔE = 3.31). Sodium benzoate is effective in maintaining the intensity and spectral stability of pigments, supporting their use in environmentally friendly natural textile dyes.
Analisis Komposit Karbon Aktif Dari Tongkol Jagung Dengan Aktivator NaCL Terhadap Hasil Morfologi Dan Sifat Fisik Lathifah, Hana; Rosidah, Afira Ainur; Yunus, Muhammad
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.23361

Abstract

Corn cobs (Zea mays L.) can produce charcoal as a source of carbon. Carbon is a potential candidate for reducing exhaust gas emissions containing hydrocarbons, carbon dioxide, and nitrogen dioxide. This research aims to convert corn cobs into activated carbon by adding NaCl activator in concentrations of 0%, 8%, and 16% and then compositing it with sago starch. FTIR testing occurred on the carbon from corn cobs before and after activation to analyze the functional groups in the activated carbon. The carbon was then composited with a ratio of 75:25 and subjected to SEM-EDX testing, moisture content analysis, and ash content analysis. FTIR testing revealed the carbonyl group (C-O) that could reduce emission levels. SEM-EDX testing showed that higher concentrations of NaCl activator (16%) resulted in more and smaller pores. Moisture content analysis indicated that higher concentrations of activators led to increased moisture content. Conversely, ash content analysis showed that lower concentrations of activator resulted in higher ash content. The tests concluded that the optimal composite of activated carbon from corn cobs and sago starch existed at an 8% NaCl activator concentration and a 75:25 composition, making it a promising candidate for reducing exhaust gas emissions.

Page 1 of 4 | Total Record : 33

 1   2   3   4 

Filter by Year

2025 2025


Reset
Filter By Issues
All Issue Vol 9, No 1: JANUARI 2026 Vol 8, No 2: JULI 2025 Vol 8, No 1: Januari 2025 Vol 7, No 2: Juli 2024 Vol 7, No 1: Januari 2024 Vol 6, No 2: September 2023 Vol 6, No 1: Maret 2023 Vol 5, No 2: September 2022 Vol 5, No 1: Maret 2022 Vol 4, No 2: September 2021 Vol 4, No 1: Maret 2021 Vol 3, No 2: September 2020 Vol 3, No 1: Maret 2020 Vol 2, No 2: September 2019 Vol 2, No 1: Maret 2019 Vol 1, No 1: September 2018 More Issue