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All Journal Rotasi Rekayasa Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta JUITA : Jurnal Informatika Jurnal Rekayasa Mesin JTT (Jurnal Teknologi Terpadu) JTM-ITI (Jurnal Teknik Mesin ITI) Machine : Jurnal Teknik Mesin JURNAL KAJIAN TEKNIK MESIN Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Jurnal Pengabdian Teknologi, Ekonomi dan Humaniora Jurnal Sains & Teknologi Fakultas Teknik Universitas Darma Persada Metalik: Jurnal Manufaktur, Energi, Material Teknik
Siregar, Rolan
Universitas Darma Persada
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Deteksi CO di Kabin Kendaraan Berjarak Jauh dan Analisis Kepadatan Lalu Lintas Menggunakan Logika Fuzzy: Deteksi CO di Kabin Kendaraan Berjarak Jauh dan Analisis Kepadatan Lalu Lintas Menggunakan Logika Fuzzy Suzuki Syofian; Aji Setiawan; Muhamad Fathan; Rolan Siregar
JUITA: Jurnal Informatika JUITA Vol. 13 Issue 2, July 2025
Publisher : Department of Informatics Engineering, Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/juita.v13i2.26854

Abstract

Carbon monoxide (CO) inside vehicle cabins poses a significant health risk to passengers and can even lead to fatalities. This danger primarily arises from inadequate ventilation, which allows exhaust fumes to seep into the cabin and be gradually inhaled. CO is a gas that lacks color, odor, taste, and does not cause irritation, making it difficult to detect without proper tools. It is commonly encountered in industrial environments and is produced by the incomplete combustion of fuel in motor vehicles, heating systems, devices that burn carbon-based materials, wood stoves, train emissions, gas burning, and even tobacco smoke. However, the primary contributor is the residual combustion from vehicle engines. Given these concerns, this study aims to develop a system to monitor and control carbon monoxide concentrations within vehicle cabins using fuzzy logic. The system achieved an average error rate of 2.9% in reducing CO concentrations, with responsive fan control latency below 5 seconds. A microcontroller will serve as the core component for processing and control. The implementation of this system is expected to enable real-time detection of CO levels in the cabin and alert the driver accordingly. Ultimately, this can help reduce incidents of CO poisoning among vehicle occupants
Design of a Portable Quick‑Release Drive System for Conventional Manual Wheelchairs to Enhance Comfort and Accessibility Siregar, Rolan; Owen, Michael; Purba, Samuel Parsadaanta
Jurnal Rekayasa Mesin Vol. 17 No. 1 (2026)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v17i1.2356

Abstract

Conventional manual wheelchairs are widely used for indoor mobility; however, their operation is limited by the user’s ability to generate propulsion force, which affects travel range and the level of independence. This study presents the design and development of a portable drive system equipped with a quick-release mechanism, enabling fast installation and removal without permanent modification to the wheelchair. The proposed system employs a 120 W DC motor and a 24 V, 4.5 Ah battery. The research methods include mechanical and electrical power requirement calculations, CAD-based design, finite element analysis (FEA) for structural strength verification, and prototype fabrication. Simulation results indicate that the structure can support an 80 kg load with a safety factor of 1.23. The prototype achieves a maximum speed of approximately 15 km/h, with an operating time of about 1 hour at maximum load. The proposed quick-release portable drive system is expected to enhance user mobility and independence, thereby improving comfort and accessibility in everyday use.
Design and Development of a Vertical-Shaft Organic Waste Chopper Machine with a Top-Mounted Agitator Herry Susanto; Yefri Chan; Juan Pratama; Rolan Siregar; Rio Ferdiansyah; Hidayat Mustofa; Muhammad Fauzan Mubarok
Jurnal Rekayasa Mesin Vol. 21 No. 1 (2026): Volume 21, Nomor 1, April 2026
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v21i1.7431

Abstract

Conventional organic waste chopping machines predominantly utilize horizontal shaft configurations, which are highly susceptible to asymmetric load distribution and present ergonomic challenges during maintenance. As an innovative solution, this study presents the conceptual design of a vertical-shaft chopping machine integrated with a hydraulic-actuated top-head system to enhance the efficiency of particle size reduction. The scope of this research is strictly confined to theoretical mathematical modeling and numerical simulations. The design process complies with the ASME B106.1M standard for transmission shafts and EN 13683 for operational safety parameters, excluding experimental fabrication. A comprehensive analysis was conducted on three primary materials—Mild Steel (MS), Stainless Steel 304 (SS 304), and Stainless Steel 316L (SS 316L)—under fluctuating waste loads ranging from 10 kg to 35 kg. The analytical results demonstrate several crucial findings: the minimum safe shaft diameter ranges from 16 mm (utilizing SS 316L at a 10 kg load) to 28 mm (utilizing MS and SS 304 at a 35 kg load). Furthermore, the agitator's power requirement exhibits a strictly linear increase corresponding to the applied load (from 1.34 kW to 4.68 kW), whereas the hydraulic system operates efficiently with a constant power profile of 0.25 kW. Overall, the vertical shaft configuration significantly promotes symmetrical force distribution, while the hydraulic system ensures safe and immediate access to the chopping chamber. The proposed design demonstrates substantial structural, operational, and ergonomic advantages, establishing a robust theoretical foundation for future development and experimental fabrication.
Co-Authors Ade Supriatna ADE SUPRIATNA Aji Setiawan Alvi Akhsan Maulana Asy'ari Firdaus Asyari Darius Atik Kurnianto Atik Kurnianto Bagus Tri Mahardika Bagus Tri Mahardika Budiarjo, Wisnu Didik , Didik Didik Sugiyanto Dwiki , Dwiki Dwiki Novandi Erwin Eva Novianti Fandikurnia, Ade Firdaus, Asy'ari Hafizh Guntur Jabbaruladli Herry Susanto Herry Susanto Hidayat Mustofa Husen Asbanu Iwan Susanto Juan Pratama Juan Pratama Muhamad Fathan Muhammad Fauzan Mubarok Owen, Michael Purba, Samuel Parsadaanta Rio Ferdiansyah Siahaan, Herbert Hasudungan Susanto, Herry - Suzuki Syofian Tatun Hayatun Nufus Todaro, Muhammad Toha Abidin Trisna Ardi Wiradinata Trisna Ardi Wiradinata Wisnu Budiarjo yefri chan Yendi Esye Yendi Esye