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All Journal JOURNAL OF SCIENCE AND APPLIED ENGINEERING Otopro Jurnal Pengabdian Masyarakat Indonesia
Akhmad Faizin
Politeknik Negeri Malang
Aerospace Engineering Automotive Engineering Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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PENGARUH JUMLAH DAN ARAH SAYATAN TERHADAP HASIL MILLING ALUMINIUM Nurlia Sari; Akhmad Faizin; Muhammad Fakhruddin; Agus Dani
Otopro Vol 19 No 1 Nov 2023
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v19n1.p40-44

Abstract

The quality of production goods, especially milling on aluminum material, is considered good if it is characterized by good surface quality of the components and efficient (short) machining time. There are various factors that affect this. This study investigated the CNC milling machining parameters, namely depth of cut and step over, which were written as the influence of the number and direction of cuts on the surface quality and machining time of aluminum materials. The purpose was to obtain the appropriate parameters so that the machining process is more efficient and with the appropriate quality. The CNC milling used was CNC Dahlih with a 6mm diameter tool, feed rate of 460 mm/min, and rotational speed of 2800 RPM. The variables were vertical cutting direction (depth of cut 5mm) with variations in step over of 0.5 mm, 1 mm, and 2 mm, and horizontal cutting direction (step over 5mm) with variations in depth of cut of 0.5mm, 1mm, and 2mm. So that the number of cuts can be equalized to 4, 6, and 12 in the vertical and horizontal cutting directions. The results showed that the more cuts, the lower the surface roughness, but it increased the machining time. 
Numerical Study of Chord Length and Twist angle Effect towards NACA 4415-FX60 Airfoil Combination in Horizontal Wind Turbines Application Hangga Wicaksono; Kris Witono; Akhmad Faizin; Budi Eko Prasetyo
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 7, No 1 (2024): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v7i1.5868

Abstract

The selection of the appropriate blade shape requires optimization in order to be applied to the relatively low wind conditions in Indonesia. This study proposed a new approach of wind turbine blades design by utilizing the combination of NACA 4415 and FX 60. The effect of twist angle and the chord length carried out in this study to better understanding the blades characteristics. The 6 DoF analysis can be used to determines the theoretical mechanical power of the wind turbine blades. The blade twist geometry analyzed in this study is 15, 20, and 25 degree. From the simulation results, the highest mechanical power was obtained on blades with a twist angle of 5 degrees and a chord length of 0.15m with an average value of 39.95 W. The simulation results show that, at a speed of 8 m/s the blade with a chord length of 0.2 m and a twist angle of 5o has the greatest torque of 5.16579 Nm, with a rotational speed of 76.0668 rpm per minute, this combination can be applied to a low rpm generator A twist angle can improve torque distribution along the blade, but a twist angle that is too sharp can reduce lift and increase drag. It was found that a wider chord length tends to produce lower rotation in the wind turbine. This is caused by the increased surface area on the turbine blade with a longer chord length, which results in an increase in the torque required to rotate the blade at a given speed.
Peningkatan Daya Panel Surya Atap dan Pelatihan Sistem Aerasi untuk Keberlanjutan Urban Farming Ikan Nila di Kelurahan Karangbesuki, Kota Malang Imam Mashudi; Muhammad Fakhruddin; Rilis Eka Perkasa; Bayu Pranoto; Akhmad Faizin
JURNAL PENGABDIAN MASYARAKAT INDONESIA Vol. 5 No. 3 (2026): Oktober: Jurnal Pengabdian Masyarakat Indonesia (JPMI)
Publisher : Politeknik Pratama Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpmi.v5i3.7929

Abstract

An urban farming initiative based on tilapia cultivation in RW 04, Karangbesuki Urban Village, Malang City, faced challenges regarding the limited power capacity of rooftop solar panels used to operate the pond aeration system. Aeration is crucial for maintaining dissolved oxygen levels as the fish population and production scale increase. Relying on conventional electricity for additional aeration would burden the community with higher operational costs. Therefore, this community service project aimed to increase solar panel power capacity while providing technical training to residents on system installation and maintenance. A participatory approach was employed, encompassing stages such as observation, system installation, technical training, and subsequent monitoring and evaluation. The project successfully increased power capacity by adding higher-capacity solar modules and more efficient storage batteries, enabling the aeration pump to operate stably even during cloudy weather or at night. Residents also successfully mastered the training material, covering component selection, wiring assembly, solar charge controller configuration, and routine maintenance. In conclusion, the program not only reduced operational costs and improved pond water quality—thereby benefiting fish health—but also successfully empowered the community to independently manage renewable energy.
Co-Authors Agus Dani BAYU PRANOTO Budi Eko Prasetyo Hangga Wicaksono Imam Mashudi Kris Witono Muhammad Fakhruddin Nurlia Pramita Sari Rilis Eka Perkasa