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All Journal International Journal of Science and Engineering (IJSE) TEKNIK Rotasi Sainteknol : Jurnal Sains dan Teknologi Jurnal Teknologi Rekayasa Mesin Sinergi Prosiding Semnastek DINAMIKA Jurnal Ilmiah Teknik Mesin JTT (Jurnal Teknologi Terpadu) Teknika: Engineering and Sains Journal JRST (Jurnal Riset Sains dan Teknologi) RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer) Prosiding Semhavok Jurnal Pengabdian Masyarakat Teknik Journal of Applied Sciences and Advanced Technology BASKARA: Journal of Business and Entrepreneurship Indonesian Journal of Computing, Engineering, and Design ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Borobudur Engineering Review Aceh International Journal of Science and Technology

Anwar Ilmar Ramadhan

Jurusan Teknik Mesin, Fakultas Teknik, Universitas Muhammadiyah Jakarta, Indonesia

Author-ID : 356952

Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Pelatihan Operasional Mesin Press Sistem Hydraulik Untuk Kebutuhan Produksi Paving Blok di Pondok Pesantren Al - Adalah Pada Sari Jatinegara - Tegal Jawa Tengah Setiawan, Bambang; Ramadhan, Anwar Ilmar; Rizkyta, Velia Ayu
Jurnal Pengabdian Masyarakat Teknik Vol. 7 No. 2 (2025): Jurnal Pengabdian Masyarakat Teknik (JPMT)
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Pondok Pesantren Al-'ADALAH merupakan pondok pesantren dengan mazhab Syafii, yang didirikan oleh tokoh Nahdatul Ulama Kyai Tasrifin Salim pada 6 November 2007 di desa Padasari, Jatinegara, kabupaten Tegal, Jawa Tengah. Pondok Pesantren ini mempunyai beberapa jenjang pendidikan antara lain : Isti’dadiyah, Tssanawiyah (Wustho), dan Aliyah (Ulya) dan Tahassus. Pondok ini mempunyai banyak kegitan , kegiatan selain bidang keagamaan , pondok ini memberikan ilmu pertanian , kewirausahaan , dengan adanya ilmu yang diberikan pada murid santrinya diharapkan selain bisa mengembangkan di dunia keagamaan juga bisa mandiri untuk bekal kehidupan di masyarakat . Dalam pemberian ilmu kewirausahaan , pondok pesantren ini kurang sekali adanya alat peraga . Dalam kajian ini , kami memberikan pandangan kepada guru guru yang ada dalam pomdok pesantren untuk memberikan alat peraga , guna menunjang pembelaajaran kewirausahaan , kami memberikan alat pembuat mesin pres pembuat Paving blok , Alat ini merupakan pembuat paving Blok dengan kapasitas 2 paving blok dalam sekali press / tekan . Alat ini diharapkan akan memberikan gambaran dalam proses wirausaha , dan bisa dikembangkan dalam jumlah yang banyak . Proses dalam pembuatan Paving Blok diberikan jumlah campuran dari pasir , semen dan bahan campran lainnya dengan prosentasi yang tertentu . Prosentasi campuran ini yang akan menentukan kualitas hasil paving blok yang bagus. Pada Pengabdian ini diberikan teori tentang mesin / alat peraga mulai dari pengenalan komponen mesin , cara operasioanl mesin , serta sistem pemeliharaan dari mesin .

EFFECT OF ANNEALING ON THE MECHANICAL PROPERTIES OF FUSED DEPOSITION MODELING 3D PRINTED PLA Natayu, Amartya; Muhammad, Azka Aulia; Tumada, Azhari; Saptaji, Kushendarsyah; Trisnadewi, Titin; Triawan, Farid; Ramadhan, Anwar Ilmar; Azhari, Azmir
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1625

Additive manufacturing or 3D printing is a rapidly moving fabrication technology with many usages in various fields. One of the methods used in 3D printing is Fused Deposition Modeling (FDM), where polylactic acid (PLA) filament is melted and deposited layer by layer to form the desired parts. This study explored the impact of annealing on the mechanical properties of 3D printed PLA specimens. Tensile specimens were produced using FDM following ASTM D638 standards. The specimens were annealed at 95°C and 145°C for 30, 60, and 120 minutes. Two untreated specimens served as benchmarks. Tensile tests were conducted on all specimens to evaluate their mechanical properties. The most optimal result was achieved with annealing at 95°C for 30 minutes, producing Young’s modulus of 3.3 GPA and the highest ultimate tensile strength (UTS) of 38.9 MPa. Other parameters resulted in lower properties compared to the untreated specimens.

Experimental Investigation of Cooling Performance in Automotive Radiator using Al2O3-TiO2-SiO2 Nanofluids Anwar Ilmar Ramadhan; Wan Hamzah Azmi; Rizalman Mamat; Ery Diniardi; Tri Yuni Hendrawati
Automotive Experiences Vol. 5 No. 1 (2022)
Publisher : Universitas Muhammadiyah Magelang

The use of nanoparticle coolant fluid in the car radiator increases the rate of heat transfer and facilitates the reduction of the overall radiator size. In this study, heat transfer characteristics of tri-hybrid nanofluids-based water/EG (60:40) were analyzed experimental and compared with water/EG (60:40). Four different nanofluids concentrations were prepared by adding 0.05 to 0.3 vol.% of tri-hybrid nanofluids dispersed a mixture of water/ethylene glycol (60:40). Experiments were carried out by varying the flow rate of coolant between 2 to 12 LPM for working temperature of 70 Â°C, the velocity of airflow remained at an average of 4 m/s, to understand the effect of coolant flow rate on heat transfer. The results showed that the thermal performance of tri-hybrid nanofluids in a water/EG (60:40) mixture has been investigated for volume concentrations of up to 0.3% and working temperature of 70 Â°C. The maximum enhancement of heat transfer coefficient for air side is observed up to 23.8% at 0.05% volume concentration meanwhile for coolant side is observed at 39.7% at 0.3% volume concentration. The pressure drop and pumping power have the same pattern which increasing in volume concentrations.

Performance Optimization of Automotive Air-Conditioning System Operating with Al2O3-SiO2/PAG Composite Nanolubricants using Taguchi Method Nurul Nadia Mohd Zawawi; Wan Hamzah Azmi; Mohd Fairusham Ghazali; Anwar Ilmar Ramadhan
Automotive Experiences Vol. 5 No. 2 (2022)
Publisher : Universitas Muhammadiyah Magelang

The performance of an automotive air-conditioning (AAC) system is influenced by a variety of operating conditions. This can be addressed by employing optimization techniques that can suggest the appropriate parameters for the best results. In this study, the optimum operating conditions for a composite nanolubricants-fuelled AAC system were investigate using Taguchi's design of experiment approach and analysis of variance (ANOVA). The motor speed value, initial refrigerant charge, and composite nanolubricants composition ratio were chosen as operating parameters to investigate the AAC system performance, focusing on the coefficient of performance (COP) and compressor work. Orthogonal arrays (ORs) L25 (56) was selected to determine the optimum operating parameters of the AAC system. The optimum values for speed, refrigerant mass, and composition ratio were determined to be A4B1C5 (60:40, 900 rpm and 155 g), respectively. The motor speed was the significant factor influencing both COP and compressor performance by 78.13% and 89.29%. A confirmation test was conducted with the optimum levels of AAC system parameters to verify the efficiency of the Taguchi optimization method. The validation between the optimization results and the experimental results yielded a maximum error of 9.85%, indicating that the findings of this investigation were acceptable.

Comprehensive Review of Nanoparticles Dispersion Technology for Automotive Surfaces Sharifah Norsakinah Syed Zainal Abidin; Wan Hamzah Azmi; Nurul Nadia Mohd Zawawi; Anwar Ilmar Ramadhan
Automotive Experiences Vol. 5 No. 3 (2022)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.6882

Many innovations arose from the continual and thorough monitoring of overlooked characteristics of materials found in the environment. Automotive paints are always constantly exposed to a broad range of ambient temperature conditions, which reduces their longevity and encourages algae development. Through the effective incorporation of nanotechnology with this lotus effect, it has become possible to provide self-cleaning ability along with air purification and antibacterial performance to automotive surfaces like paint and coating. The addition of nanoparticles such as Titanium dioxide (TiO2) and Silicon dioxide (SiO2) helps to improve functionalities like water or stain resistance, ultra-violet protection, and scratch resistance. When the nanoparticles were added into paint, they degraded the polluting compounds on the material's surface by photo catalysis. Multiple photocatalytic functions and self-cleaning properties were observed in nanoparticles added to polyester acrylic paint. Therefore, this paper discussed the history of automotive painting, nanopaint technology, previous research on the method preparation, development, and current progress, the environmental health aspects of nanotechnology, as well as the performance in terms of automotive surfaces. The study discovered the requirements for nanoparticle dispersion and coating uniformity and appearance on automotive surfaces, which will serve as a benchmark for dispersion and coating methods for automotive surfaces.

Tribology Performance of TiO2-SiO2/PVE Nanolubricant at Various Binary Ratios for the Automotive Air-conditioning System Safril Safril; Wan Hamzah Azmi; Nurul Nadia Mohd Zawawi; Anwar Ilmar Ramadhan
Automotive Experiences Vol. 6 No. 3 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10255

Tribological properties are crucial for air-conditioning system performance. The properties can be improved using nanolubricant. However, the effect of the binary ratio of hybrid nanolubricants on the tribological performance of automotive systems is limited in the literature. Therefore, the present study investigates the tribology performance of TiO2-SiO2 nanolubricants for application in automotive air-conditioning (AAC) systems. The dispersion of TiO2 and SiO2 into PVE lubricant was carried out using a two-step method. Subsequently, the dispersion stability was assessed qualitatively and quantitatively. The samples were characterised by a volume concentration of 0.010%, with variations in the mixture ratio of 20:80, 40:60, 50:50, 60:40, and 80:20. Coefficient of friction (COF) and wear scar diameter (WSD) values were determined using the Koehler Four-ball Tribo Tester and Light Compound Microscopy. The investigation revealed that each sample experienced a reduction in COF, with the 40:60 ratio demonstrating the best ratio with the most significant decrease of 37.09%. At the same time, the COF decreased by 8.34%, 2.12%, 7.37%, and 15.11% for the nanolubricant samples at 20:80, 50:50, 60:40, and 80:20, respectively. The WSD evaluation showed that the 40:60 ratio has the lowest scar diameter of 0.0344 mm and a 37.09% wear rate decrease compared to pure lubricant. Each sample exhibits superior performance when evaluated for tribological characteristics and performance, particularly in the case of nanolubricants with the 40:60 ratio. The TiO2-SiO2/PVE, characterised by a volume concentration of 0.010%, has remarkable efficacy across different binary ratios, making it highly recommended with a 40:60 ratio for lubricating AAC compressor systems.

An experimental approach to evaluate the stability and thermal conductivity of SiO₂/oil as green nanolubricant Anwar Ilmar Ramadhan; Tri Yuni Hendrawati; Kushendarsyah Saptaji; Efrizon Umar; Kukuh Haryadi
Mechanical Engineering for Society and Industry Vol. 6 No. 1 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.15463

The application of nanotechnology in lubrication science has enabled the creation of nanolubricants with superior stability, improved thermal performance, and greater environmental compatibility than conventional lubricants. In this work, the stability and thermal conductivity of SiO₂ nanoparticles dispersed in base oil were experimentally examined as a green nanolubricant. SiO₂ nanoparticles were chosen owing to their chemical inertness, excellent thermal resistance, and eco-friendly nature. The nanolubricants were synthesized using a two-step method at volume concentrations of 0.1%, 0.2%, and 0.3%, with ultrasonication applied to ensure uniform particle distribution. Their stability was assessed using UV–Vis spectrophotometry, zeta potential testing, and visual sedimentation monitoring over 30 days. Thermal conductivity was determined via the transient hot-wire method. The results demonstrated that incorporating SiO₂ nanoparticles enhanced thermal conductivity by up to 12% compared to the base lubricant. Furthermore, stability evaluation showed zeta potential values of 41.2 mV, confirming strong electrostatic repulsion and low levels of agglomeration. Overall, these outcomes emphasize the promise of SiO₂-based green nanolubricants for thermal engineering applications, offering efficient and sustainable substitutes for traditional lubricants.

Heat transfer performance of Al2O3-TiO2-SiO2 ternary nanofluids in plain tube with wire coil inserts Anwar Ilmar Ramadhan; Efrizon Umar; Wan Hamzah Azmi; Alvika Meta Sari
Mechanical Engineering for Society and Industry Vol. 4 No. 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10996

The ternary nanofluids are considered due to their advantages in overcoming the stability drawback of mono and binary nanofluids. This study aims to heat transfer performance of Al2O3-TiO2-SiO2 ternary nanofluids in plain tube with wire coil under experimental. The ternary nanofluids were formulated using the composition ratio of 20:16:64 by volume in various volume concentrations ranging from 0.5 to 3.0%. Thermal conductivity and dynamic viscosity of ternary nanofluids were measured with KD2 Pro Thermal Properties Analyzer and Brookfield LVDV III Rheometer. Experimental forced convection heat transfer was carried out using a fabricated setup for Reynolds numbers from 2,300 to 12,000 at bulk temperature of 70 °C in plain tubes with wire coil inserts (0.83 ≤ P/D ≤ 2.50). Experimental results are highest thermal conductivity enhancement of 24.8% was obtained for ternary nanofluids at 3.0% volume concentration. The 3.0% volume concentration also shows the highest viscosity at all temperatures. The maximum heat transfer improvement for ternary nanofluids in a plain tube with wire coil (P/D-0.83), was attained by 3.0% volume concentration of up to 199.23%. The average TPF of the wire coil increases compared to the plain tube and improves further with volume concentrations in the range of 2.39 to 2.84.

Optimization of IoT-Based Waste Sorting Algorithms in a Recycling System with a Capacity of 5 Kg Riki Effendi; Anwar Ilmar Ramadhan; Erwin Dermawan; Munzir Qadri; Franka Hendra
Journal of Applied Sciences and Advanced Technology Vol. 8 No. 2 (2025): Journal of Applied Science and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.8.2.35-42

This study aims to develop and optimize an automatic waste sorting system based on the Internet of Things (IoT) with a 5 kg capacity. The Convolutional Neural Network (CNN) algorithm is used for waste type classification, while optimization is performed using Particle Swarm Optimization (PSO). The system is designed to recognize and sort four main types of waste: plastic, paper, metal, and glass. System performance is evaluated based on three main parameters: sorting accuracy, processing time, and energy consumption. The results show that algorithm optimization successfully increased the average sorting accuracy from 82.5% to 94.8%. Additionally, the waste processing time significantly decreased from 3.2 seconds to 1.8 seconds after optimization, indicating improved operational efficiency of the system. In terms of energy consumption, there was a reduction from 15.6 Joules to 9.4 Joules per sorting cycle, making the system more energy-efficient and environmentally friendly. The conclusion of this research indicates that the CNN algorithm optimized with PSO can enhance the accuracy, efficiency, and energy consumption of the IoT-based automatic waste sorting system. The implementation of this system is suitable for application in small-scale industrial or household sectors to effectively support waste recycling programs. Further research could focus on testing larger capacities and more complex environmental conditions.

A Comprehensive Computational Fluid Dynamics (CFD) Analysis of the Effect of Blade Number on the Performance and Rotational Characteristics of Hydrokinetic Turbines Rachman , Aditya; Samhuddin; Kadir, Abdul; Ramadhan, Anwar Ilmar; Firmansyah
Jurnal Teknologi Vol. 18 No. 2 (2026): Jurnal Teknologi
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.18.2.131-148

The number of blades in hydrokinetic power systems is a fundamental aspect of their design. This number affects not only the investment and mechanical loads but also the performance and rotational characteristics. The relationship between the number, performance, and rotational aspects is complex, however there are currently insufficient explanations for this connection. This study examines the complex interaction between them using a steady Computational Fluid Dynamics (CFD) method based on Reynolds-Averaged Navier-Stokes (RANS) simulation. The results suggest that turbines with a higher number of blades are more effective than those with a smaller number in regions where the Tip Speed Ratio (TSR) is less than 3. Above this range, turbines with lower blade numbers perform more effectively than ones with higher numbers. The study indicates that increasing the surface area of the turbine blades can efficiently boost the torque generated at low TSR levels, leading to high-performance turbines with a higher blade number. However, when the turbine's TSR is high, an intricate flow phenomenon takes place. This phenomenon is caused by the excessive number of blades, which generates a blockage effect that changes the direction and strength of the flow over the blade. As a result, the lift decreases. This work provides novel insights into the mechanism that governs the performance and rotational properties of turbines with varying numbers of blades. Engineers can derive advantages from comprehending the effect of blade number when choosing the generator and the transmission of hydrokinetic power systems.

Co-Authors Abduh Al Afghani Abdul Kadir Abrori, Muhammad Reza Achmad Nuril Fajar Adawiyah, Sa'diyah El Ade Muslimat Aditya Firmanto Agung Julianto Agung Siswahyu Ahdiat Leksi Siregar Ahmad Fauzi Ahmad Yakub Ahmad Yakub, Ahmad Akmal Imam Faisal Alfa Taufan Latif Alvika Meta Sari Alvika Meta Sari Aminullah, A.R.M. Amri Abdulah Anggoro Septilarso Annisa Mulia Rani Annisa Mulia Rani Aryadi Suwono As Natio Lasman As Natio Lasman Azhari, Azmir Azmairit Aziz Azmi, W.H. Azmi, Wan Hamzah Bambang Setiawan Bambang Setiawan Boy Setiawan Choirul Anwar Dalil Sumiyarsono, Dalil Daruki Daruki Dede Erland Ramadhan Deni Almanda Deni Almanda Deni Almanda Dermawan, Erwin Dharu Dewi Dhian Trisnadi Setyawan Diah Safitri Ningrum Dicky Dimyati Dino Rimantho Djoko Hadi Prajitno Djoko W Karmiadji Djoko W Karmiadji Dodi Mulyadi Dyota, Arya Smara edy susanto Efrizon Umar Efrizon Umar Efrizon Umar Efrizon Umar Efrizon Umar Efrizon Umar Efrizon Umar Eka Revi Ruswandi Eka Revi Ruswandi, Eka Revi Eko Kiswoyo Erwin Dermawan Erwin Dermawan Erwin Dermawan Erwin Dermawan Erwin Dermawan Erwin Dermawan Ery Diniardi Fachri Amrulloh Fadliondi Fahmi Al Diansyah Faisal, Akmal Imam Fathan Mubina Dewadi Fatma Sari Fikri, Muhamad Rausyan Fikriyansyah Fikriyansyah Fikriyansyah, Fikriyansyah Firmansyah Firmansyah Firmansyah Firmansyah Firmansyah Fitriana, Rian Franka Hendra Frisca Amalia Ummay Govinda Gatot Aditya Hadisujoto, Ignatius Budi Sutanto Haris Isyanto Hasan Basri Hasan Basri Hasan Basri Hasan Basri Hasan Basri Hayya Afifah Hendra Saputra Husnaini Zulvian Idhar Mahasen Indra Setiawan Indriasari Indriasari Iphov Kumala Sriwana Irwan Firmansyah Ismiyati Ismiyati Istianto Budhi Rahardja Istianto Budhi Rahardja Istianto Budhi Rahardja Istianto Budhi Rahardja Istianto Budhi Rahardja Iwan Setiawan Januar Parlaungan Siregar Juni Afriani Juniasih, Octarina Adiati Kamila, Fatima Tasya Khoirudin Khoirudin Khoirudin Khoirudin Kisman H Mahmud Korada Viswanatha Sharma Kukuh Haryadi Kushendarsyah Saptaji M Al-Haramain M. Ivan Satryo Manasikana, Dinda Arina Maya Dewi Dyah Maharani Mohd Amiruddin Fikri Mohd Fairusham Ghazali Mohd Hamisa Abdul Hamid Muchamad Oktaviandri Muhamad Ridwan Muhammad Arifangga Muhammad Arifangga, Muhammad Muhammad Dadi Saputra Muhammad Daroji Muhammad Reza Abrori Muhammad Reza Abrori, Muhammad Reza Muhammad, Azka Aulia Mulyadi Mulyadi Munzir Qadri Murtalim Mushoffa Ali Firdaus Mushoffa Ali Firdaus, Mushoffa Ali Mutiara Salsabila N Nelfiyanti Nana Rahdiana Nana Rahdiana Nana Rahdiana Natayu, Amartya Nathanael Tandian Nur Yulianti Hidayah, Nur Yulianti Nurrochman, Taufik Nurul Hidayati Fithriyah Nurul Nadia Mohd Zawawi Nurul Nadia Mohd Zawawi Rachman , Aditya Rahardja, Istianto Budhi Rahmawati Suryani Ramadhani, Mochammad Rafli Rantawi, Azhar Basyir Raslan A. Alenezi Rasma Rasma Rasma Rasma Ratri Ariatmi Nugrahani Rian Fitriana Ricko Valderama Ridhwan Adhitya Ibnimatiin Riki Effendi Rikman Rikman Riza Samsinar Rizalman Mamat Rizkyta, Velia Ayu Roni Muhammad Susanto Rudiatin, Endang Rulan Dinary Rulan Dinary Runik Machfiroh Saeful Bahri Safril Safril Safril Samhuddin Sasi Kirono Semendo, Rifqi Putra Setiawan, Hanif Rama Yuda Sharifah Norsakinah Syed Zainal Abidin Sharma, Korada Viswanatha Shieddieque, Apang Djafar Siregar, Ahdiat Leksi Sitti Nurbaya Ambo Sony Hari Mukti, Sony Hari Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sulis Yulianto Sulistiono Sulistiono Sumanto Suripto, Heri Suroto Munahar Susanto, Roni Muhammad Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin, Syawaluddin Syawaluddin, Syawaluddin Sylvia Madusari Taufik Nurrochman Thomas Djunaedi Tri Yuni Hendrawati Triawan, Farid Trisnadewi, Titin Tumada, Azhari Vector Anggit Pratomo Wahyu Ibrahim Waldi Isnaini Wan Hamzah Azmi Wan Hamzah Azmi Wan Hamzah Azmi Wiwik Sudarwati Wiwit Kartika Sari Yudi Dermawan Yudistirani, Sri Anastasia Yuli Panca Asmara Yusuf Yusuf

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