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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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PENENTUAN RISIKO KRITIS PADA DISTRIBUSI GAS DENGAN MENGGUNAKAN INTEGRASI METODE AHP, RISK MANAGEMENT DAN Julian Yohanes Hamelberg; Agung Sutrisno; Charles Ch Punuhsingon
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

This research using integration of AHP and SWOT within Risk Management is in determining critical risk variables at PT. Perusahaan Gas Negara (Persero)Tbk and proposing then mitigation measure.From the result obtained, the most critical risk variables are technical risk variable with risk weight around 0.441 and rank 3, followed by economic risk with the risk weight 0.209 and rank 2, market risk with the risk weight 0.146 and rank 3 finally political risk with the risk weight 0.106 and rank 4. By using SWOT Analysis, the current position is of the company is at quadrant 1 wich using comparative advantage strategic. Key Word: AHP, Risk Management, SWOT
PENGUKURAN KINERJA BERBASIS DAMPAK WASTE DALAM KEGIATAN PERAWATAN TOWER TELEKOMUNIKASI Rein Rante; Agung Sutrisno; Johan S C Neyland
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

Waste is an activity that absorb or wasting the resource like the expenses or time that added but that’s not adding any value in that activity. The purpose of this study was to identify the correlation between the kind of waste and the performance size in the maintenance activity. To reach the purpose, case study in the maintanence of the tower was studied. From the study that have been done, it obtained various kind of critical waste and the correlation with performance of maintenance. From the result of this study, it obtained the critical waste like the employee that trying to fixed the broken machine with the waste priority number (WPN) of 70.Keywords: Waste. WPN, towe maintenance telecommunication.
PREDIKSI KEBUTUHAN ENERGI LISTRIK DI SULAWESI UTARA : SEBUAH STRATEGI IMPLEMENTASI Raymond Lumintang; Tritiya Arungpadang; Charles Ch Punuhsingon
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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Abstract

      The purpose of this research is to design the implementation strategy of electric energy requirement in sulawesi uatra by using SWOT analysis. Method of auxiliary devices used as a tool tool aids electrical energy demand analysis using artificial neural network analysis. From SWOT analysis result, SWOT parameter values are: Strength 1.65, Weaknesses 0.95, Opportunity 1.75, Threats 1.05.            The results of the SWOT analysis show that the types of threats that must be considered is the uncertainty of primary energy, especially gas, and the weakness is the limited power and networks that have not been able to reach the suluttenggo region especially the archipelago.Keywords: SWOT Analysis, Design Implementation Strategy, Prediction Electrical                   Energy Requirement
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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Abstract

                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.
PERHITUNGAN BEBAN PENDINGIN PADA RUANG SIDANG FAKULTAS TEKNIK UNSRAT Vernando V Sasuang; Frans P Sappu; 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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Abstract

Air conditioning is a cooling system where heat is transferred from the room to the atmosphere. In conducting activities in the room humans require conditions comfortable, the temperature or the humidity of the air in the room. To achieve comfortable conditions in a room, it is necessary to do air conditioning by using a cooling machine so that comfortable air can be obtained. Meeting Room of Faculty of Engineering Sam ratulangi University is often used as a place to carry out various activities, thus requiring cooling system. In this final project a calculation is performed to determine the peak cooling load and then determine the capacity of the cooling machine used to cool the room.From the calculation results obtained by the peak cooling load on the room = 125.301,3 BTU/jam. If using an Air Conditioning (AC) engine with 2 PK, then AC is required during peak load in the room as much as 7 units Keywords: Air conditioning, Cooling load, Cooling machine
ANALISIS EFISIENSI EFEKTIF HIGH PRESSURE HEATER (HPH) TIPE VERTIKAL U SHAPE DI PEMBANGKIT LISTRIK TENAGA UAP AMURANG UNIT 1 Reind Junsupratyo; Frans P Sappu; Arwanto M Lakat
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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Abstract

Heat exchanger is a device that serves to move one fluid to another fluid. In general, fluids are used as cooling using ordinary water (Cooling Water), and hot media use steam heat as heaters (Superheated Steam). One type of heat exchanger that is widely used in power generation industries is the Shell and Tube Heat Exchangers. High Pressure Heater (HPH) is one example of a heat exchanger that is widely used in the power generation industry that serves as a feed water heater before entering the boiler. This research was conducted to determine the effective efficiency of High Pressure Heater (HPH) at Amurang Power Plant (PLTU) unit 1. This determination is based on operational data on June of 2017. Data used to calculate the effective efficiency of High Pressure Heater (HPH). The calculations use the Shell and Tube Heat Exchanger heat transfer method. The calculation results obtained the highest effective efficiency achieved is equal to 69.392% and the lowest effective efficiency of 64.023% with an average effective efficiency of 66.531% during the month of June 2017.Keywords : Heat Exchanger, High Pressure Heaters, Effective Efficiency
PENGARUH LINGKUNGAN YANG KOROSIF TERHADAP LAJU KOROSI PADA BAHAN BANGUNAN BERBAHAN DASAR BESI Adyanto Prakoso; Markus Karamoy Umboh; Romels C A Lumintang
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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Abstract

The goal of this research is on understanding the influence of corrosive environment on base metal and its corrosion rate at various metals using case example at Kanonang Hill as the locus. An experimental approach is taken to obtain a causal relationship to the rate of corrosion.  The result of the experiment showed that the influence of environment of Kanonang Hill is remarkable. The study also indicating various corrosion rate for various metals used in the experiments. The score of corrosion rate for Light Steel bolt material is at 10,22 mpy, Carbon Chanell 8.52, Mild Steel 22,87 mpy, Plain Iron Concrete 33.20 mpy, Plain Iron Concrete 33.20 mpy, plain iron concerete 33.20 mpy, cast iron castings 39.33 mpy and the last, the metal tiles reaching 2.51 mpy.Keywords: Corrosive Environment, Building Material, Corrosion Level, Corrosion Rate.
PENERAPAN METODE ROOT CAUSE ANALYSIS (RCA) UNTUK MENENTUKAN AKAR PENYEBAB KELUHAN KONSUMEN Destree Christian; Agung Sutrisno; Jefferson Mende
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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Abstract

The development of the business world in Indonesia, today has shown an encouraging direction. It can be seen from the proliferation of various forms of business entities engaged in the field of goods and services both small and large scale. One of them is wedding organizer service. Wedding organizer provider company must be able to provide maximum service to increase consumer satisfication.This research is related to the application of the Root Cause Analysis (RCA) method in determining the factors that influence the low level of customer satisfaction in wedding organizer service providers.The purpose of this study is to determine the important factors that cause the low levels of customer satisfaction and provide suggestions for improving the performance of service providers in wedding organizers. This analysis uses SERVQUAL variables which contain service quality dimensions such as tangibles, reliability, empathy, responsiveness, and assurance.The results of research conducted using these 14 variables, show that there are three factors that cause low levels of customer satisfaction, they are not acting fast when consumers need (complaints given by consumers are not immediately responded to), not able to provide information according to customer needs (no service list), not having the availability of interesting event photobooths ( no availability of photographer at photobooth place, and five improvement proposals for wedding organizer service providers, such as procurement of communication equipment, assigning tasks based on mastered fields, scheduling more carefully, more thoroughly in providing information, paying more attention to concept and theme of the event according to the consumer wishes.Keywords: Wedding Organizer, SERVQUAL, Consumer Satisfaction, Fault Tree.
Variasi Dimensi Pipa Kapiler Sebagai Katup Ekspansi Terhadap Laju Pendinginan Pada Mesin Pendingin LUCAS NULLE TIPE RCC2 Reki Karangan; Frans Palobo Sappu; Irvan Rondonuwu
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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Abstract

One component of the cooling engine that plays an important role in the reducing temperature and refining pressure is the expansion valve.This research is fair to know the rate of cooling and elecricity consumption of a T2 type thermostatic expansion valve and a capillary pipe with a constant legth of 2 m with a diameter of 0,028 inches and 0,036 inches using the Lucas Nulle Type RCC2 cooling machine. The value of the result is obtained from three experiments for each tool for one hour.Based on the observations it was found that the average cooling rate using a T2 type thermostatic expansion valve can achieve a temperature decrease of up to 2,87 oC with an electricity consumption of 201,96 watts, for each capler using a 0,028 inch diameter decrease in temperature can reach up to -0,33 oC with electricity consumption of 198,22 watts and for the use of 0,036 inch diameter capillary pipe the temperature decreases can reach up to 5,37 oC with electricity consumption of 211,31 watts. Key word : T2 type thermostatic expansion valve, capillary pipe
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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Abstract

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

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