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R.E.M (Rekyasa Energi Manufaktur) Jurnal
Published by Universitas Muhammadiyah Sidoarjo
ISSN : 25275674     EISSN : 25283723     DOI : https://doi.org/10.21070/r.e.m
Core Subject : Engineering,
Engineering
Focus and Scope Aim: to facilitate scholar, researchers, and teachers for publishing the original articles of review articles. Scope: Mechanical Engineering include: Energy Conversion Renewable Energy Manufacturing Materials and Design Engineering Mechatronics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 155 Documents
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Optimization of Polylactic acid and Banana Peel Flour Composition to Enhance the Mechanical Properties and Biodegradability of Eco-Friendly Bioplastics Abdulloh, Isa Yuanata; Andita Nataria Fitri Ganda; Dewi Puspitasari; Arya Mahendra Sakti
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v10i2.1789

Abstract

This study investigates the development of environmentally friendly bioplastics made from polylactic acid (PLA) reinforced with banana peel flour. Four filler concentrations (0%, 10%, 20%, and 30% wt) were fabricated using injection molding and evaluated through tensile testing (ASTM D638), FTIR spectroscopy, and soil burial biodegradation. Pure PLA showed the highest tensile strength (26.23 MPa) but had the lowest elongation (6.33%) and biodegradation rate (12.8%). Adding 10-20 wt% filler increased stiffness, with the elastic modulus rising from 21.24 MPa to 38.12-26.63 MPa, while maintaining moderate flexibility. The 30 wt% composite demonstrated the most balanced performance, achieving 67.24 MPa tensile strength, 40.12 MPa modulus, 11.49% elongation, and the highest mass loss (20.2%). FTIR results showed a C=O shift from 1743.44 to 1720.46 cm⁻¹ and broad O–H bands, confirming hydrogen bonding and improved interfacial adhesion. Overall, banana peel flour is a promising sustainable filler for PLA-based bioplastics.
Observe The Response a Finite Element Linear Static Analysis Simulation Was Conducted On The Fire Extinguisher Refill Frame. Nanda, Rizki Aulia; Karyadi; Mulyadi, Dodi; Suhara, Ade
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v10i2.1792

Abstract

The apar refill machine consists of several components so that the frame of the apparatus requires a strength analysis of the frame. The problem that arises to make a portable apparatus is that there are 2 main components that depend and 1 component that does not depend, so the purpose of this study is with the process of finite element linear static analysis, the results of the frame design can show the reactions that arise due to the existing load, whether the frame is safe to use or not. This research method begins with design, material input, mesh input, boundary condition input and force input. The results show that the reactions that occur are the highest stress of 18,882 N, disspacement 2,450E + 00 mm, strain of 8,182E-05 and safety factor 3,6383 + 12. From these results, according to the mechanical properties reference static linear threshold, the value is still safe at the maximum force threshold.
Design and Fabrication of a Modular Mini-Hydro Turbine for Off-Grid Electrification in Nigeria’s Riverine Communities Unegbu, Hyginus; YAWAS, Danjuma
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 11 No 1 (2026): In Progress
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v11i1.1776

Abstract

This research presents the design, simulation, fabrication, and performance evaluation of a modular crossflow mini-hydro turbine engineered to address persistent energy access challenges in Nigeria’s off-grid riverine communities. The system was conceived to operate efficiently under low-head, variable-flow conditions typical of inland watercourses, using a fully modular design framework that emphasises ease of deployment, maintenance, and scalability. Computational fluid dynamics (CFD) was employed during the design phase to optimise internal flow characteristics, nozzle geometry, and runner-blade profiles. The turbine achieved a hydraulic efficiency of 62% to 68% and produced a consistent power output of 300–340 W per module across a range of flow conditions. Empirical testing validated the CFD predictions with deviations remaining under 7%, confirming the design’s reliability. Environmental assessments revealed noise and vibration levels well within rural acceptability thresholds, and casing integrity was preserved under continuous operational testing. A key innovation of the system lies in its modular configuration. All primary components—including the shaft-runner assembly, generator unit, and control interface—were designed to be independently replaceable using basic tools. Scalability tests confirmed that dual-module operation retained 92% efficiency, demonstrating the viability of phased expansion in community-scale installations. The turbine aligns with national electrification objectives and offers a replicable, context-sensitive solution for rural electrification in sub-Saharan Africa. The study contributes a practical and scalable model for clean energy deployment, advancing the case for modular micro-hydro systems as critical infrastructure in remote and underserved regions.
Optimizing the Utilization of Renewable Energy in the Indonesian Army's Military Infrastructure: A Systematic Literature Review and Case Study Analysis of Hybrid Energy Systems in Remote Areas: Optimalisasi Pemanfaatan Energi Terbarukan dalam Infrastruktur Militer TNI AD: Telaah Literatur Sistematis dan Analisis Studi Kasus Hybrid Energy System di Wilayah Terpencil Nana Komara, Acep; Mohammad Azis Mahardika
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 11 No 1 (2026): In Progress
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v11i1.1794

Abstract

Kemandirian energi bagi pos-pos militer di daerah terpencil merupakan isu strategis yang berimplikasi langsung terhadap ketahanan pertahanan negara. Saat ini, sebagian besar pos militer TNI AD masih mengandalkan generator diesel, yang memiliki konsumsi bahan bakar tinggi, biaya logistik mahal, dan dampak lingkungan yang signifikan. Sejalan dengan agenda transisi energi nasional menuju Net Zero Emission 2060, integrasi energi terbarukan di sektor pertahanan menghadirkan peluang sekaligus tantangan. Artikel ini menyajikan analisis dan tinjauan literatur terkini tentang penerapan sistem energi terbarukan hibrida di daerah terpencil, baik di Indonesia maupun di luar negeri, serta mengkaji implikasinya bagi pos-pos militer TNI AD. Metodologi penelitian ini mencakup tinjauan sistematis terhadap publikasi internasional (Scopus, ScienceDirect), jurnal nasional terakreditasi (Sinta), laporan pemerintah, dan dokumen kebijakan dari tahun 2015–2024. Temuan penelitian menunjukkan bahwa sistem hibrida PLTS, baterai, dan diesel merupakan konfigurasi yang paling relevan, dengan potensi penghematan bahan bakar sebesar 70-85%, pengurangan biaya operasional logistik, dan pengurangan emisi karbon yang signifikan. Studi di Filipina, Afrika, dan kepulauan Indonesia menunjukkan keberhasilan implementasi sistem hibrida di wilayah terpencil, yang dapat diadaptasi untuk pos-pos militer TNI AD. Artikel ini memberikan kontribusi akademis dengan mengintegrasikan literatur energi terbarukan dengan perspektif pertahanan dan menawarkan rekomendasi praktis untuk implementasi proyek percontohan sistem hibrida di pos-pos militer perbatasan.
Effect of Anadara Granosa Shell Volume Fraction on Erosive Wear and Hardness Behaviour of Al 6061 Metal Matrix Composites Purba, Riki Hendra; Aldi Raditya Adriansyah; James Julian; Fitri Wahyuni; Elvi Armadani; Fathin Muhammad Mardhudhu
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 11 No 1 (2026): In Progress
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v11i1.1795

Abstract

Despite the favorable mechanical properties of Anadara Granosa Shell (AGS), particularly hardness, its influence on the wear resistance of Metal Matrix Composites (MMCs) remains insufficiently explored. Therefore, this study aims to investigate the potential of AGS waste as an eco-friendly reinforcement for Al6061 alloy. Composites were fabricated with 0 wt%, 5 wt%, 10 wt%, and 15 wt% AGS addition. Wear behavior of each specimen was evaluated using sandblast with SiO2 as the erodent particles. The investigation also involved the microstructure and wear mechanism observation using optical microscope and Scanning Electron Microscopy (SEM). In addition, the hardness of each material measurement using Vickers hardness test was included to obtain a comprehensive insight. The results shows that the AGS reinforcement was evenly distributed within the matrix, though a minor presence of voids was observed. The hardness of specimens exhibited a consistent increase proportional to the AGS content. Interestingly, the erosion rate showed no significant difference between the 0 wt% and 5 wt% AGS additions, but drastically increased with 10 wt% and 15 wt% reinforcement. This suggests that hardness is not the primary factor governing the erosion behavior in these composites. Analysis of the worn surfaces revealed a prevalent wear mechanism: reinforcement particle peel-out, which became more severe at 10 wt% and 15 wt% AGS concentrations. Conversely, the unreinforced (0 wt%) Al 6061 alloy displayed ripple formation, indicating a plastic deformation mechanism typical of a ductile material. Therefore, this study highlights the critical importance of considering the wear mechanism, specifically the susceptibility to particle pull-out, when evaluating the erosive wear behavior of Al6061 MMCs reinforced with Anadara Granosa Shell waste.

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