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All Journal Rekayasa Mesin Jurnal Rekayasa Mesin JMM (Jurnal Masyarakat Mandiri) Jurnal Elemen Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Infotekmesin Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Journal of Applied Engineering and Technological Science (JAETS) Indonesian Journal of Electrical Engineering and Computer Science JPKMI (Jurnal Pengabdian Kepada Masyarakat Indonesia) Community Development Journal: Jurnal Pengabdian Masyarakat JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Prima Abdika: Jurnal Pengabdian Masyarakat Panrannuangku Jurnal Pengabdian Masyarakat Jurnal Pengabdian Multidisiplin Jurnal Polimesin
Zakki Fuadi Emzain
Politeknik Negeri Malang
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Journal : Jurnal Polimesin

 1 
Optimization of Savonius Turbine Towards Different Inner Blade Positions to Improve Turbine Performance Yusuf Dewantoro Herlambang; Supriyo Supriyo; Budhi Prasetiyo; Abdul Syukur Alfauzi; Marliyati Marliyati; Wawan Purwanto; Fatahul Arifin; Zakki Fuadi Emzain
Jurnal POLIMESIN Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.3248

Abstract

The purpose of this study is to examine the performance of the Savonius turbine on the inner blade position in order to improve turbine efficiency. The blades used are a simplification of the Savonius U/L and the Savonius 1:2 double blade model. This research begins by creating four blade models: a single-blade model, a double-blade model at the blade's tip, a double-blade model at the blade's base, a single-blade model, and a double-blade model along the blades against the wind. The four models are then fitted in the test system for generator performance. Next, the efficiency characteristics of the turbine will be tested against rotation. The test results of the four models were evaluated by comparing each model's efficiency. The results indicate that the Savonius double-blade 1:2 and Savonius U/L turbines achieve efficiencies of 2.42% and 2.1% at 5 m/s and 7 m/s, respectively. At speeds of 5 m/s and 7 m/s, the double-tip position inner blade model increased by 81% and 61%, respectively. The double-tip inner blade variant has the maximum efficiency at 9 m/s, at 3.71 percent. Therefore, the Savonius U/L type vertical axis wind turbine with a 1:2 double blade is the most suited blade model for usage at wind speeds less than 7 meters per second. While the Savonius model with innovations in the inner blade double tip position is suitable for operation at wind speeds greater than 9 meters per second, the Savonius model without such advances is not
Analisis elemen hingga untuk siklus berjalan pada model prostetik lentur pergelangan kaki Zakki Fuadi Emzain; Utsman Syah Amrullah; AM. Mufarrih
Jurnal POLIMESIN Vol 18, No 2 (2020): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v18i2.1922

Abstract

The model of compliant prosthetic ankle-foot is proposed as an alternative prosthetic aid for people with disabilities to do activities. The model is designed and analyzed to determine its strength and feasibility before being fabricated. The two main stages in this research are model design and model analysis. The shape of the model was designed with several elastic cavities and arches using the concept of a compliant mechanism. Finite element analysis (FEA) was performed on the prosthetic model when the stance phase on the mechanism of the human gait cycle. Because the prosthetic foot area is in contact with the ground on this cycle phase. Three main positions in 0-64% of the gait cycle are heel strike, midstance, and toe-off positions used as boundary conditions. The amount of load given adjusts the bodyweight percentage of the gait cycle with a reference of 80 kg. The direction of loading was by following the angle of the foot when dorsiflexion to plantarflexion during the stance phase. The biggest deformation results occurred in the toe-off position with two peak cycles of 4.69 mm and 4.45 mm at 17% and 51% of the gait cycle. While the smallest deformation occurred in the midstance position with an average of 0.08 mm. Because it used fixed support with two pedestals on the soles of the prosthetic. Maximum stress occurred in the toe-off position of 16.45 MPa at 17% of the gait cycle. With a safety factor of 1.63, the value is still safe because it is below the yield strength value of ABS material. While the largest strain of energy was located in the lower area in the middle of the arch between the toe and sole foot in the toe-off position of 3.55 mJ.
Design optimization of sleeve finger splint model using Finite Element Analysis Zakki Fuadi Emzain; Utsman Syah Amrullah; Am. Mufarrih; Nanang Qosim; Yusuf Dewantoro Herlambang
Jurnal POLIMESIN Vol 19, No 2 (2021): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v19i2.2272

Abstract

One of the rehabilitation alternatives for fingers injuries is to use a finger splint. Some existing finger splint models still use excessive material, and the size is not appropriate. The purpose of this study was to propose a customized sleeve finger splint model with a conical shape along with the finger surface from the proximal phalanges to the distal phalanges. Design optimization using topology optimization was carried out to reduce mass and volume while maintaining the stress strength of the model. The stages of the method in this research were modeling design, preprocessing analysis, topology optimization, and postprocessing analysis. Topology optimization design was set with 70% mass in response constraint. The analysis results showed a significant reduction in the model mass of 42.18%, from 6.78 grams to 3.92 grams. Meanwhile, the maximum equivalent stress increased slightly by 3.42%, from 8.12 MPa to 8.4 MPa. Even though there was an increase in equivalent stress after topology optimization, the sleeve finger splint model was still categorized as safe, with a safety factor of 3.39.
Implementation of Failure Mode and Effect Analysis (FMEA) for centrifugal pump maintenance in water supply distribution system Zakki Fuadi Emzain; Zean Galang Wardhana; Satworo Adiwidodo; Siti Duratun Nasiqiati Rosady; Prasetyo Prasetyo; Muhammad Andi Nova
Jurnal Polimesin Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.4739

Abstract

A centrifugal pump is an essential mechanical device in the Regional Drinking Water Company (PDAM) to distribute sterile water from the reservoir to local community houses by flowing the fluid through the pipeline. However, improper and inadequate maintenance of centrifugal pumps can result in component damage, including bearings that are broken, ripped, or damaged mechanical seals. Therefore, for the water supply to continue smoothly, proper maintenance needs to be carried out so that the engine's performance will be maintained and last longer. This study aims to conduct a maintenance analysis on centrifugal pumps utilized by the PDAM of Madiun City. The Failure Modes and Effects Analysis (FMEA) method was employed to assess the potential failure of a system, design, process, or service by implementing a systematic approach to analyze damage and devise maintenance strategies. The FMEA analysis revealed that the shaft of the centrifugal pump component had the highest Risk Priority Number (RPN) value, which amounts to 294. The wearing ring had the lowest RPN value among the centrifugal pump components, with a value of 54. The Pareto diagram results classified six components: shaft, clutch, stuffing box, motor, impeller, and mechanical seal to recommend preventative maintenance action. Additionally, three other components suggested for corrective maintenance were the bearing, packing, and wearing rings
Co-Authors A. Hanif Firdaus Abdul Syukur Alfauzi Agus Harijono Ahmad Hanif Firdaus Ahmad Hanif Firdaus Akhlis Rizza, Muhammad Ali Sai’in AM Mufarrih AM. Mufarrih Amalia, Zakiyah Amaral, Hanifiyah Darna Fidya Amrullah, Utsman Syah Amrullah, Utsman Syah Andika Angger Nugraha Andre Kurniawan Budhi Prasetiyo Eko Yudianto Etik Puspitasari Etik Puspitasari, Etik Fataa Kusumattaqiin Fatahul Arifin Fatahul Arifin Fina Andika F. A. Hakim, Muhammad Fahmi Harijono, Agus Hariyanto, Moh. Nasir Hery Setyawan Hidayatinnisa’, Nurul Huang, Shyh-Chour Kris Witono Lalu Giat Juangsa Putra Lisa Agustriyana Lisa Agustriyana Lisa Agustriyana Lutfi Hakim Marliyati Marliyati Mochammad Muzakki Moh. Nasir Hariyanto Monasari, Ratna Muhammad Akhlis Rizza Muhammad Andi Nova Muhammad Andi Nova Nanang Qosim Nanang Qosim Nanang Qosim Nugroho, Pipit Wahyu Nurchajat Nurhadi Nurhadi Prasetyo Prasetyo Prasojo, Rahman Azis Purwanto, Wawan Rangga E. Santoso Ratna Monasari Ratna Monasari Rohmanita Duanaputri Sarjiyana Satworo Adiwidodo Siti Duratun Nasiqiati Rosady Subagiyo Subagiyo Sudarmadji Sudarmadji Supriyo Supriyo Suyanta Suyanta Syamsul Hadi Syamsul Ph.D M.A. Hadi Sza Sya Monica Valeria Viyus, Vinan Wijaya, Bustani Hadi Yang, Yu-Sheng Yusuf Dewantoro Herlambang Yusuf Dewantoro Herlambang Zean Galang Wardhana