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All Journal International Journal of Applied Sciences and Smart Technologies Vivabio : Jurnal Pengabdian Multidisiplin Jurnal Tekno Mesin Jurnal Poros Teknik Mesin Unsrat
Stenly Tangkuman
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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METODE PREDIKSI BERBASIS GREY MODEL UNTUK PROGNOSIS PERAMBATAN RETAK Rivco Mamoto; Stenly Tangkuman; Michael E Rembet
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 6 No. 2 (2017): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

The crack is one of the frequent problems in engineering field. It effectively cause the component become fail. Therefore predicting crack growth is very important. Prediction was applied, so crack can be prognosed. In order to prevent failure in a component, crack prognostics have applied. The aim of this research is developing of Grey Model as a predictor, and application of developed Grey Model on crack growth prediction. The crack growth data acquired from experimental files were employed for evaluating the proposed method. A modification has made to improve the accuracy of prediction. In addition, error parameter has involved for evaluating the predicting performance.The methodology of this paper consists of five stages. That are theoretical study, simulation of basic grey model, background value modification, simulation of modified grey model, and application of modified grey model.The result shown there are decrease of error values on the prediction. The reduction of error values of three prediction data are 14,07 %, 4,01 %, and 6,93 % respectively. Thus, the development of grey model for crack growth prognostic has successfully made. Keyword: Crack, Prognostics, Grey Model, Prediction Method
SIMULASI KINEMATIKA MEKANISME LENGAN BACKHOE EXCAVATOR Ginanjar Mustofa; Stenly Tangkuman; Hengky Luntungan
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 7 No. 1 (2018): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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                In the modern era as now required a fast and efficient calculation method which is usually done by simulation method. The software used in this simulation is SolidWorks 2016. SolidWorks is a parasolid based solid modeling, and uses a parametric-based approach to modeling and assembly. Parameters refer to restrictions that are valuable to determine shape or geometry of the model.               Based on this in this research will be kinematics simulation, where the result of simulation covering the whole workspace on excavator arm. The object research is a Backhoe Excavator arm mechanism of Hitachi ZX-type ZX-200. The purpose of this study was to determine velocity, tangential acceleration, and normal acceleration in excavator arm mechanism.               The maximum velocity of boom bar is 2948.82 mm/s which occurs when the boom angle is at 16.64° (t = 3.83s) or at the minimum angle of the workspace. The boom velocity simulation results have also been validated by hand calculation, maximum tangential acceleration is 2430.12 mm/s2, and the maximum normal acceleration is 3705.11 mm/s2. The maximum velocity of arm shaft is 1778.06 mm/s which occurs when the angle of arm rod is at 140.86°, maximum tangential acceleration is 4594.03 mm/s2, and the maximum normal acceleration is 6665.24 mm/s2. The maximum velocity of bucket rod is 473.61 mm/s, maximum tangential acceleration is 90.09 mm/s2, and maximum normal acceleration is 297.89 mm/s2. Keywords: Kinematic Analysis, Arm Excavator, Hitachi ZX-200.
PERANCANGAN MESIN STIRLING BETA TENAGA MATAHARI SEBAGAI PENGGERAK POMPA AIR Alfa Ageng Santoso; Stenly Tangkuman; Michael E Rembet
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 7 No. 2 (2018): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Stirling engine is a heat engine that is driven by compression cycle and expansion of the working fluid in the form of gas. At different temperatures there will be a pressure difference which causes changes in heat energy to mechanical energy. Mechanical energy can be used to drive a water pump. This study aims to design a solar power Stirling beta engine to drive a water pump. There are six stages in this research. The first step is literature study. The second step is data collection. The third step is the calculation of the initial data. The fourth step is determining the initial dimensions. The fifth step is designing. The final step is a conclusion. Through this research, the Stirling Beta solar power has been successfully designed to drive the water pump. The design results can be described in five parts. The first part is the centralized temperature generated from a parabolic mirror with a diameter of 800 mm ranging from 937 K. The second part is the resulting cycle pressure of 1.79 bar. The third part is, at 3000 rpm, the Stirling engine producing a power of 496,6 Watt.. The fourth part is the torque produced by the engine of 30.07 Nm. In the last section, the dimensions of the Stirling engine design are 524 mm long, 167 mm wide and 200 mm high.Keywords: Stirling Beta, Solar Power, Water Pump
SIMULASI DAN PEMODELAN TURBIN ANGIN TIPE DARRIEUS DENGAN KONFIGURASI ROTOR TIPE H UNTUK PEMBANGKIT LISTRIK TENAGA BAYU SKALA MIKRO Alexander Widodo; Stenly Tangkuman; Hengky Luntungan
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 8 No. 1 (2019): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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The purpose of this study was to obtain the results of modeling and simulation for H-Darrieus wind turbine with straight blades. There are two approaches used in this study, namely hand calculation and software analysis. The calculation and analysis employed wind speed data of Manado City. Before applying software analysis, the data is processed to obtain the lift & drag forces that occur in turbine blades and other forces acting on wind turbines. Furthermore, the results of hand calculations and software analysis are compared so that the results of modeling and simulation are validated.The average counted-power of turbine is 181,81 watts, the wind turbine diameter is 2260 mm, and the wind turbine height is 2350 mm. The lift force is 143,257 N & the drag force is 3,978 N which is based on the attack angle 8,95, and the maximum Von Mises stress in the wind turbine is 184,96 MPa. Therefore, the wind turbine would not fail because the maximum stress that occurs in the structure is smaller than allowable stress of the material.Finally, the results of the modeling and simulation for the H-Darrieus wind turbine with straight blades are successfully obtained. The output of this research is turbine design drawings.Keywords: Darrieus Wind Turbine, Modelling, Simulation, Lift & Drag Force
ANALISIS DEFLEKSI BENDA KERJA DITINJAU DARI KEDALAMAN POTONG PADA PROSES BUBUT Yeremia Sianturi; Stenly Tangkuman; Irvan Rondonuwu
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 9 No. 2 (2020): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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The purpose of this research is to obtain relations of workpiece’s deflection toward cutting force related to gripping distance, and to analize deflection towards parameters of the depth cutting and cutting rotation velocity at 300 rpm and 1600 rpm. The first result, is the deflection of workpiece is getting larger by the depth of cutting is increases. The second result, is the difference of deflection towards cutting rotation velocity variations. Number of workpiece’s deflection, showed small reduction at 300 rpm towards 1600 rpm. However, deflections numbers remain constant showed by the statistics data, because of the small variation. This research showed that, at the low cutting velocity the workpiece’s deflection is larger compare to high cutting velocity. Refer to deflection number, the recommended cutting velocity is 1600 rpm.Keywords: Depth of cutting, Deflection of workpiece, The lathe
RANCANG BANGUN BANTALAN MAGNET PERMANEN UNTUK RODA DAYA SEBAGAI BATERAI MEKANIK Renova Sibarani; Stenly Tangkuman; Michael Rembet
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 10 No. 1 (2021): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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The flywheel as a mechanical battery is an energy storage device that is superior in terms of charging and discharging compared to other energy storage devices. In this research the dimensions of the mechanical battery are design in a such a way as to make it easier to use in daily life. On other side the mechanical battery is designed using permanent magnet bearing in the hope that it can minimize the occurance of frictionthat can reduce the power of the battery.The research was made in a Design and ConstructionLaboratory, Majoring in Mechanical Engineering UNSRAT. In this research the shaft material used is carboon steel type S30C which is heat treat with normalization. The shaft diameter is obtained 18 mm and flywheel diameter is 100 mm. Magnet capacity on the shaft as many as 28 magnets on each ring. So the total magnet on the shaft are 224 magnets. Aside on that in this research the diameter of the bearing is 30 mm with magnet capacity is 40 magnets on each ring. So the total magnet on the bearing are 320 magnets.The final result of the mechanical battery dimensions is 110×120×105 mm. the magnitude of the magnetic support force on each ring is 900 gr with the total bearing support force is 7,2 kg. The maximum torque that can be held is 4574 kg.mm Keyword : Mechanical Battery, Dimensions, Magnetic Bearing
SIMULASI GETARAN PADA RODA DAYA YANG DIDUKUNG BANTALAN MAGNET PERMANEN Djill Van Itrantoi; Michael Rembet; Stenly Tangkuman
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 10 No. 1 (2021): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

Object such as Fly Wheel, it is bound to have natural frequency as one of it is vibration parameter. If excitation is applied at the same frequency as natural frequency, then resonance will occur. As the result, excess deformation on the structure can occur. In this research, the natural frequency from the Fly Wheel was calculated. The calculation was conducted with the help of Finite Element on a software. Followed with the calculation of the working frequency range and structure deformation as a result of the vibration that occurred. The deformation calculation was conducted because deformation will effect the size (dimension) between the wheel and the housing.  However, the simulation that was conducted only on the first five vibration mode. This Research is consisted of four stages. The four stages are literature study, fn analysis of a basic road, preliminary measurement mechanical battery and fn analysis of the mechanical battery. Preliminary measurement was conducted because the mechanical battery that was analysed is already constructed in Construction Laboratory, Department of Mechanical Engineering, University of Sam Ratulangi.The Result of the simulation indicated that five vibration mode occurred on these spinning frequency are 32.21 Hz, 88.71 Hz, 173.93 Hz, 287.48 Hz, and 429.32 Hz. Followed, the biggest working range are between vibration mode two to three. Finally, deformation that effected the size between Fly Wheel and housing bearing it is on two, three and five.Key Words: Fly Wheel, Natural Frequency, Vibration Simulation with Software.
SIMULASI PENGARUH JUMLAH DAN PANJANG SUDU TERHADAP DAYA TURBIN ANGIN TIPE POROS HORISONTAL Josua Simanjuntak; Stenly Tangkuman; Irvan Rondonuwu
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 10 No. 1 (2021): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

Wind power is a power plant that uses wind as an energy source to produce electrical energy. This plant converts wind energy into electrical energy using wind turbines or windmills. The purpose of this study was to obtain the simulation result of comparison wind turbine power on variations number and length. The conclusion of this study is increasing number and length of sudus in the Ansys 2020 R1 simulation, the greater power produced. The greatest power was obtain in the variation of the turbine with a number of sudus 6 and 2 meter of length is 1290 Watt.Keywords: Horizontal axis wind turbine, Simulation, Power, Torque
Desain Turbin Angin Darrieus Hellical untuk Alternatif Pengisian Daya pada Mobil Listrik Andries Reff Onsu; Stenly Tangkuman; Hengky Luntungan
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 10 No. 2 (2021): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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When the car moves forward, the air flowing through it will be left behind. By placing a wind turbine on a car, the air flow can be used to rotate the turbine. The addition of tunnels and turbines on the car will change the aerodynamic force, so that it will change the amount of power the car needs. To analyze this, modeling and simulation were carried out. The modeling software used is SolidWorks 2013 Premium and the simulation software is Ansys Workbench 18.1. This study uses three car models, namely: conventional car models, cars with front tunnels and cars with rear tunnels. Making tunnels and installing turbines affect the aerodynamic forces. The aerodynamic force of the car after the turbine installed is smaller than the aerodynamic force of the car before the turbine installed for the car mode of rear turbine modification, while for the car model of front turbine modification, the aerodynamic force of the car after the turbine installed is greater than the aerodynamic force of the car after the turbine installed. The dimensions of the Darrieus helical wind turbine are 0.3 m in height, 0.2 mm in diameter, the blade profile uses NACA 0021, and the blade length is 0.03 m with a helical angle of 50º. At a car speed of 100 km/h, it is obtained Cp of 0.55 with a power of 60.2 Watt for the wind turbine installed in the rear tunnel car, while for the wind turbine mounted on the front tunnel car, it obtained Cp of 0.26 with a power of 3.903 Watt.
Perancangan Gearbox Turbin Angin Savonius Tipe-L Untuk Pembangkit Listrik Pada Rumah Tinggal Lidya Daingah; Stenly Tangkuman; Charles Punuhsingon
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 11 No. 1 (2022): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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The L-type of Savonius wind turbine is one type of vertical axis wind turbine. The L-type of Savonius wind turbines have proven be an effective wind turbine for converting wind energy into electrical energy. One part that plays a role in the process of converting wind energy to electricity is a gearbox. The gearbox serves to increase the rotation coming from the turbine and then forward it to the alternator. In this research, a gearbox for wind power generation with the L-type of Savonius wind turbine has been designed. The gearbox consists of a pair of gears, two shafts, four bearings, and two keys.                The calculation results show that the gearbox speed ratio is 5.3, while the torque on the first shaft is 10.12 Nm and on the second shaft is 1.88 Nm. The stress simulation shows that the von mises stress is less than the allowable stress of the material. Keywords: Gearbox, Savonius Wind Turbine, Speed Ratio
Co-Authors Aditya Husada Agung Sutrisno Akbar, Dimas Jalalludin Alexander Widodo Alfa Ageng Santoso Andries Reff Onsu Angrian Rante Arungpadang, Tritiya A.R. Benny L. Maluegha Benny Maluegha Charles Punuhsingon Daswin Basselo Dirga Tangel Djill Van Itrantoi Efrando Manullang Farrell S Kiling Freddy Mananoma Gabrial, Bryan Ginanjar Mustofa Hafidz Ammar Haryono Putro Hafidz Ammar Haryono Putro, Hafidz Ammar Haryono Hengky Luntungan Henra Heny Sigarlaki Henra Heny Sigarlaki, Henra Heny I Nyoman Gede Irvan Rondonuwu Itrantoi, Djill Van Jefrey I. Kindangen Jerry Rapar Pangayow Jerry Rapar Pangayow, Jerry Rapar Johansen C. Mandey Josua Simanjuntak Josua Simanjuntak, Josua Jotje Rantung Judisthira Frelly Mamahit Judisthira Frelly Mamahit, Judisthira Frelly Kiling, Farrell S Lidya Daingah Liem, Cindy Malendes, Nizar Mamoto, Rivco Mananoma, Freddy Manullang, Efrando Marbangun, Laksamana Meita Rumbayan Michael E Rembet Michael E Rembet, Michael E Michael Rembet Mongkol, Jericho Mustofa, Ginanjar Nizar Malendes Onsu, Andries Reff Renalldy Djodjobo Renova Sibarani Rifanli Wahab Rivco Mamoto Rondonuwu, Irvan Santoso, Alfa Ageng Sherwin R.U Sompie Sianturi, Yeremia Sibarani, Renova Takaliuang, Adnan Tangel, Dirga Tritiya A Rante Arungpadang Tritiya A.R. Arungpadang Tritiya Arungpadang Tritya A R Arungpadang Wahab, Rifanli Widodo, Alexander Woe Junior Yeremia Sianturi