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All Journal Scientific Journal of Mechanical Engineering Kinematika
Taufik Wisnu Saputra
Universitas Sebelas Maret
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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POLA ALIRAN UDARA PADA TURBIN ANGIN SAVONIUS HELIKS DENGAN VARIASI JUMLAH SUDU MENGGUNAKAN METODE CFD Muhammad Harist Mishbahuddin; Taufik Wisnu Saputra; Danar S. Wijayanto
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.313

Abstract

The availability of fossil resources is decreasing, cause government and private sectors to race in developing renewable energy. One solution is to create Wind Power Plants to meet energy demands. The Savonius turbine, also known VAWT, this great potential to meet small-scale energy needs. Savonius turbines have lower performance compared to other types. This performance needs to be enhanced through design modifications, such as varying the number of blades. This research purpose is to analyze effect number of blades on performance of helical Savonius turbines. This research focuses on airflow patterns with varying blade numbers in helical Savonius turbines. These turbines numerically studied using Computational Fluid Dynamics (CFD) approach with ANSYS Fluent. Each variation of blade numbers will simulate at wind speeds between 1 to 5 m/s. Numerical testing results will provide visualizations in form contour and vector within pressure or velocity scope for each variation. Based on visualization of numerical testing results, found that number of blades affects flow patterns. Increasing the number of blades increases turbulence flow. Pressure on convex surface also increases with the addition of blades. These two airflow phenomena reduce turbine performance, so two blades produce most optimal performance due to minimal resistance they experience.
PENGARUH SUDUT PENGAPIAN DAN DURASI INJEKSI ECU ARDUINO TERHADAP KINERJA DAN EMISI GAS MOTOR FI Muhamad Andito Yogatama; Taufik Wisnu Saputra; Danar Susilo Wijayanto
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 1 (2025): SJME Kinematika Juni 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i1.729

Abstract

The increasing number of motorcycles in Indonesia, exceeding 125 million units in 2022, reflects the high demand for efficient and environmentally friendly vehicles. This trend drives the advancement of combustion system technology, notably the shift from carburetors to Electronic Fuel Injection (EFI). EFI is an electronically controlled fuel delivery system designed to optimize combustion through precise control of ignition timing and fuel injection duration. This system has proven effective in improving engine efficiency and reducing exhaust emissions. However, most mass-produced motorcycles are still equipped with non-programmable ECUs, limiting tuning flexibility. This study evaluates the use of an Arduino-based programmable ECU as a more adaptive alternative. Experiments were conducted on a Honda Vario 110cc FI, varying ignition timing (+2°, +4°, +6°, +8°, +10° BTDC) and fuel injection duration (+5%, +10%, +15%) using Pertamax RON 92 fuel. The results showed an 8% increase in maximum torque (16.98 N.m) at +4° and +5% configuration, and a 3% increase in maximum power at +2° and +10%. The lowest HC and CO emissions were recorded at +2° and +5%, with reductions of 44% and 41%, respectively. The Arduino-based ECU effectively enhances engine performance while maintaining emission efficiency.
PENGARUH SUHU NOZZLE 3D PRINTING TERHADAP KEKUATAN TARIK DAN KEKERASAN PERMUKAAN FILAMEN PP DAUR ULANG Adnan Fatchurrachman; Danar Susilo Wijayanto; Taufik Wisnu Saputra
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 1 (2026): SJME Kinematika June 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i1.780

Abstract

This study aims to investigate the effect of nozzle temperature variations on the tensile strength and surface hardness of 3D-printed specimens using polypropylene (PP) filament derived from instant noodle packaging waste. The filament was produced through an extrusion process at 200°C and subsequently printed into test specimens using Fused Deposition Modeling (FDM) with nozzle temperatures of 190°C, 200°C, and 210°C. Tensile testing was conducted in accordance with ASTM D638 Type IV, while hardness testing was performed using the Shore D method. The results show that nozzle temperature significantly affects the mechanical and physical properties of the specimens. The optimum performance was obtained at 200°C, yielding a tensile strength of 16.83 MPa and a hardness of 47.80 Shore D. At 190°C, both tensile strength and hardness decreased, while at 210°C hardness increased but tensile strength declined due to potential thermal degradation. Therefore, 200°C is identified as the optimum temperature, providing the best balance between mechanical performance and structural stability
Co-Authors Adnan Fatchurrachman Danar S. Wijayanto Danar Susilo Wijayanto Herman Saputro Muhamad Andito Yogatama Muhammad Harist Mishbahuddin Towip, Towip Valiant Lukad Perdana Sutrisno Yuyun Estriyanto