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All Journal Scientific Journal of Mechanical Engineering Kinematika DEDIKASI: Community Service Reports Jurnal Polimesin Nozel : Jurnal Pendididikan Teknik Mesin
Taufik Wisnu Saputra
Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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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
Optimization of power and efficiency of a vortex water turbine through blade–outlet distance and transmission ratio analysis Florensius Kitaro Asagi; Danar Susilo Wijayanto; Taufik Wisnu Saputra
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.7933

Abstract

As fossil fuel resources decline, vortex water turbines offer a promising renewable energy alternative by utilizing river flow. This experimental research aims to analyze the effect of blade distance from the outlet and transmission ratio on the electrical power and efficiency produced by vortex water turbines as a renewable energy solution. Three variations of blade distance from the outlet (20 mm, 40 mm, and 60 mm) and three variations of transmission ratio (1:3, 1:4, and 1:5) were tested under seven water flow rate variations of 27.8 l/min, 33.68 l/min, 34.11 l/min, 34.54 l/min, 34.97 l/min, 35.4 l/min, and 35.83 l/min. Data were collected for 5 minutes, with a 10-second interval for each parameter. Test results show that the highest electrical power of 4.88 watts was achieved at a blade distance of 20 mm from the outlet, a transmission ratio of 1:5, and a water flow rate of 35.83 l/min. Meanwhile, the highest turbine efficiency of 11.25% was obtained at a blade distance of 20 mm from the outlet, a transmission ratio of 1:3, and a water flow rate of 35.83 l/min. Increasing blade–outlet distance reduced both power and efficiency, while higher transmission ratios increased power but decreased efficiency due to torque–speed trade-offs. These results confirm that the distance between the blade and the outlet, and the transmission ratio, are critical parameters for optimizing performance of vortex turbines. A blade distance closer to the outlet provides the best performance and a larger transmission ratio will also improve performance, although transmission loading must also be considered.
Mewujudkan Pembelajaran Kejuruan yang Nyaman: Implementasi Kaidah Ergonomi dalam Praktek Pengelasan di SMK Negeri 1 Purworejo Yuyun Estriyanto; Komarudin Komarudin; Towip Towip; Taufik Wisnu Saputra; Indah Widiastuti
DEDIKASI: Community Service Reports Vol 6, No 2 (2024): DEDIKASI: Community Service Report - July
Publisher : FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/dedikasi.v6i2.80412

Abstract

Various welding positions and extended durations of welding practice sessions can contribute to Musculoskeletal Disorders (MSDs) complaints among Vocational High School (SMK) students. MSDs encompass conditions that manifest symptoms affecting muscles, nerves, tendons, ligaments, joints, cartilage, and the spinal cord. The implementation of an ergonomic welding table may assist welding operators in working on projects for prolonged periods with a reduced risk of MSDs complaints. This article reports on the community service activities conducted by the Vocational and Mechanical Engineering Education research group at Universitas Sebelas Maret in developing and implementing an ergonomic welding table at SMK Negeri 1 Purworejo. Ergonomic parameters used for reference include the Nordic Body Map (NBM), Rapid Entire Body Assessment (REBA), and Rapid Under Limbs Assessment (RULA). The pre and post experiment analysis indicates a decrease in NBM, REBA, and RULA scores following the implementation of the ergonomic welding table, suggesting the potential for minimizing MSDs complaints.
Empowering Local Communities to Help Solve Plastic Waste Through Education and Recycling Solution Indah Widiastuti; Danar Susilo Wijayanto; Cucuk Wawan Budiyanto; Taufik Wisnu Saputra
DEDIKASI: Community Service Reports Vol 6, No 1 (2024): DEDIKASI: Community Service Report - January
Publisher : FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/dedikasi.v6i1.78590

Abstract

This community service program aims to create awareness of the plastic pollution challenge by empowering the local communities around Sekolah Alam Solo Raya (SELASAR). The program is part of a problem-based learning approach implemented to support community-based education in SELASAR. SELASAR’s students are expected to educate the communities in sorting the general waste and separating out items that can be recycled. The educational kit of a simple recycling machine will be developed in UNS and then installed in Sekolah Alam Solo Raya for educational purposes. The communities will take an educational tour through plastic recycling, from sorting to final production. The objective of the educational tour is to raise awareness of waste reduction and provide practical tips on how to create a more sustainable environment. It is also expected that students could create well-designed products that have more commercial value.
PASAR TENAGA KERJA INKLUSIF DAN PEKERJAAN AFIRMATIF UNTUK PENYANDANG DISABILITAS Daniel Jesayanto Jaya; Taufik Wisnu Saputra; Andry Ananda Putra Tanggu Mara
Nozel : Jurnal Pendididikan Teknik Mesin Vol 6, No 4 (2024)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v6i4.91193

Abstract

An inclusive labour market emphasizes equal opportunities and fair treatment for all individuals, including persons with disabilities, with the aim of optimizing the potential of the workforce, increasing innovation, productivity, and economic growth. In Indonesia, inclusive policies have been implemented through various laws and regulations that support the rights of persons with disabilities to obtain decent work. Nonetheless, challenges in the form of discrimination and lack of supporting infrastructure are still significant. Disabled people's organizations (DPOs) play an important role in economic empowerment through skills training and entrepreneurship. This training covers areas such as screen printing, electronics, computers and weaving, as well as social assistance for small businesses. The types of jobs available to people with disabilities include operators, customer service, telemarketing, teachers, and administration. Awareness and effective policies are needed to create a truly inclusive workplace in Indonesia. With sustained commitment from all parties, Indonesia can respect and protect the rights of persons with disabilities, ensure equal and fair access to employment opportunities, and harness their full potential for nation-building.
Co-Authors Adnan Fatchurrachman Andry Ananda Putra Tanggu Mara Cucuk Wawan Budiyanto Danar S. Wijayanto Danar Susilo Wijayanto Daniel Jesayanto Jaya Florensius Kitaro Asagi Herman Saputro Komarudin Komarudin Muhamad Andito Yogatama Muhammad Harist Mishbahuddin Towip, Towip Valiant Lukad Perdana Sutrisno Widiastuti, Indah Yuyun Estriyanto