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All Journal Jurnal Simetris Jurnal Teknik Mesin TELKOMNIKA (Telecommunication Computing Electronics and Control) Teknik dan Ilmu Komputer Rekayasa Mesin Journal of Engineering and Technological Sciences Majalah Ilmiah MOMENTUM Semesta Teknika Jurnal Teknik Mesin Jurnal Fisika FLUX Science and Technology Indonesia JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Jurnal Pengabdian Pada Masyarakat Prosiding Seminar Nasional Teknoka Machine : Jurnal Teknik Mesin JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin JURNAL CRANKSHAFT Jurnal Teknik Mesin Indonesia Jurnal Pendidikan dan Konseling Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Scientific Journal of Mechanical Engineering Kinematika Jurnal Abdi Insani Jurnal Mekanik Terapan JTTM: Jurnal Terapan Teknik Mesin Jurnal Teknik Mesin Mechanical Engineering for Society and Industry MACHINERY: Jurnal Teknologi Terapan Jurnal Teknik Mesin Mechanical Xplore Creative Research in Engineering (CERIE) METIKS: Jurnal Teknik Mesin, Elektro, Informatika, Kelautan & Sains Techno Equivalent: Jurnal Ilmiah Sosial Teknik JPNM : Jurnal Pustaka Nusantara Multidisiplin Journal of Global Engineering Research & Science (J-GERS) Integrated Mechanical Engineering Journal Nozzle : Journal Mechanical Engineering Jurnal Polimesin Jurnal ANDARA (Pengabdian Kepada Masyarakat)
Adhes Gamayel
Department Of Mechanical Engineering, Faculty Of Engineering And Computer Science, Jakarta Global University, Depok, 16412, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Performance of piezoelectric energy harvester with various ratio substrate and micro windmill Adhes Gamayel; Ade Sunardi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 22, No 2: April 2024
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v22i2.25691

Abstract

One of the mechanical energy harvesters, piezoelectric energy harvesters (PEHs), produces electricity in response to an external load, which leads to stress and strain in the cantilever beam. The study focused on performance PEH due to collisions between micro windmill blades and PEH substrate. The substrate has dimensions of 10 cm × 6 cm × 1 mm in length, width, and thickness, respectively. Experimental setup was in wind tunnel with a cross-section of 250 mm × 250 mm and blower to generated wind flow inside the tunnel. The wind speeds were set up at 6, 7, and 8 m/s, and then three ratios, namely 1:1, 1:2, and 1:3, were analyzed in output voltage and the deflection. The performance of energy harvesting in a ratio of 1:1 and wind speed of 8 m/s produces a deflection of 2.05 cm, the highest voltage of 12.67 volts, and an effective voltage of 5.62 volts. It was found that ratio 1:1 has a greater mass weight and cross-section than others, leading to more curvature in the PEH beam when the collision occurs. Besides that, the high speed of the micro windmill rotation causes collisions between the blades and PEH to become more frequent.
Performance of piezoelectric energy harvester with vortex-induced vibration and various bluff bodies Adhes Gamayel; Mohamad Zaenudin; Brainvendra Widi Dionova
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 21, No 4: August 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v21i4.24330

Abstract

Piezoelectric energy harvesters (PEHs) are a kind of energy harvester that generates electricity due to pressure or vibration. Vortex-induced vibration (VIV) is a method that utilized wind energy and bluff body to generate the vibration in PEH. The objective of this research was to study the output voltage that generates in different bluff bodies with various airflow velocities. Experimental and simulation have done in this study. Experimental used PEH that consists of piezoelectric bimorph and rectangular-trapezoid fin. Bluff bodies with various cross-sectional areas, namely rhombus, square, and triangle were set up in front of the PEH at a distance of 80 cm. The various air velocities are set up to 5, 7, and 9 m/s in the wind tunnel with a cross-section of 250 mm × 250 mm. The simulation used the finite element method in explore the fluid flow pattern. The rhombus cross-sectional bluff body can generate voltage with an average of 1.5 volts. It is more voltage generated than a square and triangle. A vortex is formed near the rhombus bluff body and generates pressure fluctuation in its wake region. This pressure fluctuation takes place until airflow hits and leads PEH to vibrate and generate the voltage.
Analisis Pengaruh Penambahan Winglet pada VAWT Berbasis NACA 0018 dengan Metode Eksperimental Diaz Ryansyah Moelia; Adhes Gamayel; M. Untung Zaenal Priyadi
JPNM Jurnal Pustaka Nusantara Multidisiplin Vol. 4 No. 1 (2026): February : Jurnal Pustaka Nusantara Multidisiplin (ACCEPTED)
Publisher : SM Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59945/jpnm.v4i1.1065

Abstract

Pengembangan energi angin sebagai bagian dari energi terbarukan memerlukan peningkatan efisiensi turbin, khususnya pada kondisi kecepatan angin rendah hingga sedang. Salah satu permasalahan utama pada Vertical Axis Wind Turbine atau VAWT tipe Darrieus adalah kehilangan energi akibat pusaran ujung bilah yang menurunkan performa aerodinamis. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan winglet pada ujung bilah VAWT berbasis profil NACA 0018 terhadap kecepatan putar dan tegangan listrik yang dihasilkan. Metode penelitian yang digunakan adalah eksperimen laboratorium menggunakan wind tunnel tipe open circuit. Variasi winglet yang diuji terdiri atas sudut kemiringan 15°, 30°, dan 45°, serta konfigurasi tanpa winglet sebagai pembanding. Pengujian dilakukan pada kecepatan angin 6 m/s, 7 m/s, dan 8 m/s dengan pengukuran RPM dan tegangan listrik secara real time menggunakan sistem akuisisi berbasis Arduino. Hasil penelitian menunjukkan bahwa penambahan winglet mampu meningkatkan performa turbin secara signifikan pada seluruh variasi kecepatan angin. Konfigurasi winglet dengan sudut 30° secara konsisten menghasilkan nilai RPM dan tegangan tertinggi, dengan peningkatan kecepatan putar lebih dari 50 persen dan tegangan lebih dari 100 persen dibandingkan kondisi tanpa winglet pada kecepatan angin tertinggi. Temuan ini menunjukkan bahwa optimasi sudut winglet berperan penting dalam mengurangi kehilangan energi akibat pusaran ujung bilah dan meningkatkan efisiensi konversi energi pada VAWT skala kecil.
Effects of Soybean and Olive Oil Additives on the Physical and Frictional Properties of Synthetic 5W/30 Oil Fachri Musakhi; Adhes Gamayel
Journal of Global Engineering Research and Science Vol. 4 No. 1 (2025): Vol. 4 No. 1 (June 2025): Journal of Global Engineering Research & Science (J-G
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i1.159

Abstract

The growing demand for environmentally friendly lubricants has encouraged the development of bio-based additives derived from vegetable oils. This study investigates the effects of blending soybean oil and olive oil with SAE 5W/30 synthetic lubricant on physical properties and tribological performance. Lubricant blends were prepared with varying volume fractions of soybean oil and olive oil (0, 20, 40, 60, and 100%). Density and kinematic viscosity were measured at room temperature to evaluate changes in physical properties. Tribological behavior was examined using a pin-on-disc friction test under controlled conditions, including a constant rotational speed of 450 rpm, a normal load of 2 kg, and a test duration of 3 minutes. Friction temperature was recorded during testing, and wear surface morphology was analyzed using optical microscopy. The results indicate that increasing vegetable oil content influences density and viscosity, reflecting modifications in lubricant film characteristics. Blended lubricants generally exhibited lower friction temperatures compared to pure synthetic oil, indicating improved lubricity and heat dissipation. Surface morphology observations revealed smoother worn surfaces and reduced wear severity for blended oils, particularly those containing balanced proportions of soybean and olive oil. These improvements are attributed to the polar functional groups in vegetable oils, which enhance adsorption and film formation at the contact interface. Overall, the findings demonstrate that soybean and olive oil blends can effectively improve the tribological performance of SAE 5W/30 synthetic lubricant, highlighting their potential as sustainable and eco-friendly lubricant additives for mechanical applications.
Performance Analysis of Nyamplung Oil (Calophyllum Inophyl-lum) as an Alternative Liquid Electrical Insulation Material to Replace For Power Transformer Oil Lukman Lukman; Yanuar Zulardiansyah Arief; Adhes Gamayel; Sinka Wilyanti
Equivalent: Jurnal Ilmiah Sosial Teknik Vol. 5 No. 1 (2023): Equivalent: Jurnal Ilmiah Sosial Teknik
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/jequi.v5i1.139

Abstract

In the operation of electric power distribution, the transformer can be said to be the heart of the transmission and distribution of electric power. In recent years the use of vegetable oil is increasing. The purpose of this study was to test and analyze a mixture of transformer oil and nyamplung oil (Calophyllum Inophyllum) as transformer insulation and also to obtain the best composition of nyamplung oil which can be used as an alternative to transformer oil. This research method tested the parameters of nyamplung oil and a mixture of nyamplung oil and mineral oil (Shell Diala S4), such as; viscosity, flash point, density, pour point, acidity, moisture content and breakdown voltage. The sample test results are then compared with standard mineral oil according to IEC 60296-2003. From the analysis conducted, it was found that TRNY10 oil mixture (10% transformer oil and 90% mineral oil) has the best potential as power transformer oil.
Systematic review of battery cooling technologies in electric vehicles: Methods, challenges, and recent innovations Priyadi, Muhammad Untung Zaenal; Gamayel, Adhes; Chandrasa, Ganesha Tri; Priandana, Eka Rakhman; Nugraha, Heri; Haq, Imaduddin; Kurniawan, Panca
Mechanical Engineering for Society and Industry Vol. 5 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.14070

Abstract

This study presents a comprehensive review of battery cooling technologies in electric vehicles (EVs), focusing on their effectiveness, challenges, and recent innovations. The research methodology involved analyzing various cooling methods, including air cooling, liquid cooling, phase change materials (PCM), and thermoelectric cooling systems, through a systematic literature review. The study evaluated these technologies based on their thermal efficiency, design complexity, implementation costs, and performance across different environmental conditions. The findings reveal that while air cooling offers simplicity and cost-effectiveness, it demonstrates limited thermal efficiency for high-performance applications. Liquid cooling systems, despite higher complexity and costs, provide superior thermal management, maintaining battery temperatures within optimal ranges. PCM-based systems effectively manage short-term heat spikes but face limitations in thermal conductivity and long-term stability. Hybrid cooling solutions, particularly those combining PCM with liquid cooling, showed significant improvements in thermal efficiency, achieving temperature reductions of 40-50 °C compared to conventional methods. The integration of nanotechnology, specifically through nanofluids and graphene-based materials, enhanced heat transfer efficiency by 20-30%. The study concludes that future developments in EV battery cooling systems will increasingly integrate artificial intelligence and smart technologies for adaptive thermal management, while hybrid cooling solutions emerge as the most promising approach for optimizing battery performance and longevity. These advancements are crucial for the continued evolution of electric vehicle technology and sustainable transportation solutions.
Co-Authors Abdulrazaq, Mohammed N. Ade Sunard Ade Sunardi Ade Sunardi Ade Sunardi Ade Sunardi Ade Sunardi Ade Sunardi Agung Hermawan Agung pangestu Agus Purnomo Al-Zubaidi, Salah Andi Suandi Andono, Yuswanto Andry Wibowo Asep Apriana, Asep Asep Supriadi Asep Supriadi Ayu Nurul Hardiyanti Beltsazar Joy Panggabean Brainvendra Widi Dionova Chandrasa, Ganesha Tri Dedi Sofyan Deni Dian Nugraha Diaz Ryansyah Moelia Diaz Ryansyah Moelia Djoko Setyo Widodo Eddy Yusuf Eddy Yusuf Fachri Musakhi Fadhlullah, Muhamad Vikri Faizah, Safira Fajar Mulyana Fikri, Muhammad Luqman Saiful Fitria Efendy Goodman Octavianus Hamdan Hariyanto Hamdan Hariyanto Hamzah, Kamal Hanun, Yunan Haq, Imaduddin Haryudiniarti, AN Herakarsono, Alfianto Heri Nugraha Hermanto I Nyoman Jujur Ida Bagus Indra Ida Bagus Indra Ida Bagus Indra Ikhsannudin, Moh. Nova Istianto Budhi Rahardja Jujur, Inyoman Juliyanto Simamora Kamal Hamzah Kasum Kasum Kasum Kasum Kasum Kasum Kasum Kasum, Kasum Kokom Komalasari Kurniawan, Panca Leo Fendi Sadewo Lukman Lukman M Luqman SF M. N. Mohammed M. N. Mohammed M.U.Z. Priyadi MN Mohammed Mohamad Zaenudin Mohamad Zaenudin Mohamad Zaenudin Mohamad Zaenudin Mohammad Farhan Mohammed N. Abdulrazaq Muhammad Hambali Muhammad Ridho Putra Nusantara Muhammad Rizki Muhammad Untung Zaenal Priyadi mulyono, Sidik Murtalim Murtalim MUZ Priyadi Nashrul Chanief Hidayat Oskar Mahardika Prasetyo, Rio Dwi priandana, eka rakhman Rano Agustino Riyan Ariyansah Romansa Romansa Romansa Saca Andika Salah Al-Zubaidi Saleh, YKP Sefnath J E Sarwuna Sidik Mulyono Simamora, Tigor Simamora, Yulianto Sinka Wilyanti Sinta Restuasih Sunard, Ade Sunardi, Ade Sunardi, Ade Supandi Tampubolon, Adam Jordan Tri Wahyu Ridono Triwiyanto, Askar Ujiburrohman Ujiburrohman U Usbanu Ade Atmoko Yanuar Zulardiansyah Arief Yasya Khalif Perdana Saleh YKP Saleh YKP Saleh Zaenal Priadi, Untung Zaenudin, M Zaenudin, Mohammad Zulhamidi