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All Journal METAL : Jurnal Sistem Mekanik dan Termal JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Muh. Abdillah
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Automotive Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Design of Volume Control Type Portable Mechanical Ventilator Ishak; Nurhidayanti; Muh. Abdillah; Wicaksono, Ariawan Bayu
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 1 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.1.21-28.2025

Abstract

This research addresses the critical need for affordable, portable ventilators, particularly for patients with respiratory distress, including those with COVID-19. These devices are essential for initial patient care during transport to hospitals. This project focuses on developing a volume-controlled ventilator that adheres to fundamental medical standards, enabling precise adjustments of tidal volume (VT), I/E ratio, and respiratory rate (RR). The ventilator utilizes an Arduino Mega 2560 controller to manage a solenoid valve, which regulates airflow for inspiration and expiration. Tidal volume, the volume of air delivered per breath, is adjustable between 50ml and 805ml, with selectable increments of 5ml to 20ml. The solenoid valve's activation controls the inspiration phase, allowing for adjustable inspiration times from 0.25 to 3.8 seconds. Conversely, deactivation facilitates expiration, with adjustable expiration times from 0.75 to 6.3 seconds. This precise control over respiratory parameters aims to provide effective and adaptable respiratory support, enhancing accessibility to crucial medical interventions.
Optimasi Kinerja Mesin Diesel dengan Campuran Biodiesel dan Aluminium Oksida sebagai Nanoadditif Muh. Abdillah; Wicaksono, Ariawan Bayu; Ishak; Nurhidayanti
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 01 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i01.183

Abstract

Biodiesel is an environmentally friendly renewable fuel, but it has lower energy efficiency and can increase nitrogen oxide emissions. This study examines the effect of adding aluminum oxide nanoparticles (Al₂O₃) on the performance of diesel engines fueled with biodiesel. Five fuel combinations were tested: B30 and B30 with Al₂O₃ at concentrations of 30, 50, 70, and 90 ppm. The results show that the addition of Al₂O₃ increases the engine's torque and brake power, with the highest increases of 4.14% and 6.22% respectively in the B30+Al₂O₃ 70 ppm mixture under high load conditions. This effect is associated with better atomization, optimal air-fuel mixing, and the catalytic properties of the nanoparticles. However, at a concentration of 90 ppm, there is a slight decrease in performance due to nanoparticle aggregation. The optimal concentration of 70 ppm shows potential for improving biodiesel efficiency. Further studies are needed to evaluate the long-term stability and its impact on engine lifespan.
Analysis of Computational Fluid Dynamics on 3D Printing Propeller Design using Thermoplastic Material Nurhidayanti; Muhammad Ikhsan; Muh. Abdillah
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 2 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.2.122-129.2025

Abstract

The propeller is essential in generating thrust for various applications, from UAVS to ship propulsion and industrial ventilation. Propeller performance is greatly influenced by the characteristics of the fluid flow generated by the interaction between the propeller blades and the surrounding medium. 3D printing technology offers design flexibility and cost efficiency in propeller manufacturing. This study aims to analyse the effect of rotational speed variations on the performance of 3d printed propeller designs made of PLA. Simulation of Computational Fluid Dynamics (CFD) was used to evaluate the fluid flow velocity distribution, flow pattern, and flow type transition around the propeller. The results showed that the variation of rotational speed affects the fluid flow type, with low rotational speed producing laminar flow and high rotational speed producing transitional flow. This understanding is important for the optimisation of PLA 3D printing propeller design in improving efficiency and reducing noise.
Co-Authors Ariawan Bayu Wicaksono ISHAK Muhammad Ikhsan Nurhidayanti