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Jurnal Poros Teknik Mesin Unsrat
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : 28088166     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Poros Teknik Mesin Unsrat (JPTMU) merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Fakultas Teknik Universitas Sam Ratulangi dengan periode penulisan dua terbitan per tahun pada bulan Juli dan November. Artikel yang diterbitkan mencakup bidang Teknik Mesin dan Teknik Industri.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 139 Documents
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SIMULASI PROSES BONGKAR MUAT PETI KEMAS DI PT. PELABUHAN INDONESIA SORONG Josua Istia; Trytia Arungpadang; Jefferson Mende
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

PT. Pelindo Sorong is a company in West Papua that offers loading and unloading services using containers. Although the company has implemented  a queue distribution pattern in handling containers, it needs process improvement.One method to overcome is problem is to use Promodel 2016 software and SPSS version 22 as a tool to determine the optimal timing of the ideal loading and unloading process. The container handling equipment observed in this study were a crane, tractor trailer and reach stacker. The field survey in February 2020 was conducted to measure the handling time of dry containers.The simulation results show that the optimal average loading process is 2.32 minutes and the loading process time is 3.08 minutes. And the highest level of utility for the loading process is 25.24% and for the loading process is 53.30%. From the analysis using promodel 2016 software, it is known that the highest utility value of the two processes is below 100% so that there is no bottleneck. If the utility value of both processes reaches 100%, there will be a rush in the queue system. The solution is the there must be additional tools in the process with a high level of utility.Keywords: Containers, Loading and unloading equipment, Promodel 2016, Optimal    average time
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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Abstract

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
PERENCANAAN PEMBANGKIT LISTRIK TENAGA SURYA PADA GEDUNG GEREJA GMIM PNIEL BAHU Novellia Anise; Benny Maluegha; Hengky Luntungan
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

This research aims to make simple technical planning of Solar Power Plant system to meet the electricity needs of GMIM Pniel Bahu Church building. This research was carried out in several stages, namely literature studies, data collection, data processing, analysis and discussion, and most recently conclusions.            The data required in this study are data on the use of electrical equipment obtained directly at the research site, as well as radiation data and clearness index manado city obtained from NASA Surface Meteorology and Solar Energy database. Data processing is done using HOMER(R) 2.86 software.Result simulation with homer software(R) 2.86   for on-grid system shows that    for on-grid system, electricity needs of GMIM Pniel Bahu Church building are met by PLN network of 31,529 kWh/year (99%) and PLTS of 170 kWh/year (1%). The PLTS used consists of a 0.1 kW PV and a 0.1 kW converter. As for the off-grid system, the power supply for gmim pniel bahu church building is provided by PLTS consisting of 30 kW PV, 208 pieces of Trojan T-105 battery and 15 kW converter capable of producing electrical energy of 51,107 kWh/year.
ALISIS SIFAT MEKANIK RANTAI TIPE 428 PADA SEPEDA MOTOR PRODUK YAMAHA MX135 Brilliant Davidson; Markus Karamoy Umboh; Tritiya Arungpadang
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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Abstract

The motorcycle chain is one of the most important parts of the motor which has a function to transmit power from the engine to the wheels. In this study, an analysis of the mechanical properties and chemical composition of the plates and pins of the Yamaha MX 135 type 428 motorcycle chain and other motorcycle chain products was carried out. The methodology used is hardness testing, microstructure testing and chemical composition testing on the two motor chain products and comparing them with the standard.The results obtained show that the chain plate hardness value for Yamaha products is 44.35HRC and other products of 44.4 HRC have exceeded the SAE 1050 hardness standard of 30 HRC. The hardness value of the Yamaha motorcycle chain pin is 427 HB and the motorcycle chain pin of other products is 428 HB which has met the AISI 15B25 standard of 131 HB. Thus, the value of the tensile strength of both plate and chain pins for Yamaha motorcycles and other products obtained from the conversion of hardness values also exceeds the set standards. The results of microstructure testing for plates and pins of motorcycle chains for Yamaha products and other products contain ferrite and pearlite phases with uneven distribution. The results of the chemical composition test show that the Yamaha motorcycle chain plate has met the SAE 1050 standard while the other product motorcycle chain has a C element content of 1.44% exceeding the standard which is 0.48-0.55%. In the motorcycle chain pin, Yamaha products have a C content of 0.4% and in other products it has a C content of 0.43%, which is greater than the AISI 15B25 standard of 0.22-0.3% C.
Penerapan Metode HIRARC untuk Analisis Risiko Keselamatan Kerja Pada Penambang Emas Rakyat di Ratatotok Maikel Wahani; Agung Sutrisno; Charles Punuhsingon
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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Abstract

 Traditionally, small-scale mining industry organized by the community is a typical industry that has a high risk of work accidents. Related to efforts to minimize the risk of mining activities in traditional mining businesses, this study aims to identify various safety risks in the traditional gold mining process in Ratatotok, North Sulawesi using the HIRARC (Hazard Identification, Risk Assessment and Risk Control) method. The results of the application of this method indicate that the most critical risk of work accidents is the danger of being hit by a hole buffer tool and being pinched by rocks and the danger of being buried by landslides due to continuous rain with the largest risk score of 25. 
Penerapan Metode HIRARC untuk Analisis Risiko Keselamatan Kerja Pada Penambang Emas Rakyat di Ratatotok Maikel Wahani
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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Abstract

Traditionally, small-scale mining industry organized by the community is a typical industry that has a high risk of work accidents. Related to efforts to minimize the risk of mining activities in traditional mining businesses, this study aims to identify various safety risks in the traditional gold mining process in Ratatotok, North Sulawesi using the HIRARC (Hazard Identification, Risk Assessment and Risk Control) method. The results of the application of this method indicate that the most critical risk of work accidents is the danger of being hit by a hole buffer tool and being pinched by rocks and the danger of being buried by landslides due to continuous rain with the largest risk score of 25.
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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Abstract

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.
ANALISIS LAJU PENDINGINAN DAN KONSUMSI ENERGI LISTRIK PADA MESIN PENDINGIN LUCAS NULLE TYPE RCC2 MENGGUNAKAN REFRIGERAN R-600A Gredio Lewu; Frans Palobo Sappu; 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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Abstract

Refrigeration machines already play an important role in the lives of modern society. In order for a cooling machine to be utilized optimally, the cooling capacity of the cooling machine must be in accordance with the heat load and electrical energy consumption it overcomes. This research aims to find out the performance of cooling engines in terms of cooling rate and electrical energy consumption when using R-600a refrigerant in Lucas Nulle type RCC2 cooling machines at Sam Ratulangi University Mechanical Engineering Laboratory, using temperature data from refrigerant R-600a as well as electrical current data. The observational values of the data were obtained by three prominent data, each experiment was conducted for 90 minutes on refrigerant variations.The results of observation of data for the average temperature decrease, which can reach a temperature of 4.1 ° C.  The relationship between coldbox temperature and time. R-600a refrigerant has an average temperature drop of 0.0398 °C/s. And the rate of cooling to electricity consumption when the cooling machine began to operate increased where at the starting point of 1.04 A with a temperature of 28 ° C, to the end point of 1.3 A With a temperature of 4.1 ° C the average increase in electricity consumption was 0.0038 A / s.

Page 11 of 14 | Total Record : 139

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