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<![CDATA[Rancangan konsep sistem pemantauan dan pengelolaan data produksi berbasis configurable virtual workstation (CVWs) ]]>
<![CDATA[Andi Arif Isyanto]]>;
<![CDATA[Sri Raharno]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v17i2.388
<![CDATA[Management of production data that is excessively big and varied is difficult to do manually, so the system that can be used to easily monitor and manage the production data during the process is needed. This study proposes a framework of monitoring and managing production data based on Configurable Virtual Workstation (CVWs) in the rollingstock industry in Indonesia, with a case study of the flat wagon assembly process. The methodology used in this study is by creating a virtual model of assembly elements according to real conditions on the shopfloor. Each of these virtual elements will be connected to each other to get the update information on the shopfloor accurately and transparently to build a cyber-physical system as the first step towards Industry 4.0. Some of the information that can be obtained from the implementations of this system includes: 1) operator working hours; 2) ongoing operation; 3) product completion status; 3) material supply status; 4) product traceability. Based on this information, the actual conditions on the shopfloor can be known and monitored easily and accurately.]]>
<![CDATA[Analisis dampak penerapan sistem pengelolaan perkakas berbasis paradigma Industry 4.0: Studi kasus industri padat karya ]]>
<![CDATA[Laulia Ariyani Rangkuti]]>;
<![CDATA[Sri Raharno]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v17i2.389
<![CDATA[In general, production orders will not be completed according to the production schedule if there are obstacles in the production process, such as damaged production machines, material shortages, lack of operators and poor tool management. Solution for this problem, namely tool management, is to use the industry 4.0 paradigm through the development of a cyber physical system. Cyber physical system concept for the tool management system is carried out by giving identity to all tools. At the time the tool will be distributed, the tool must first be scanned using hardware. Through this scanning process, data is obtained in the form of the number of tools that have been distributed and available. The tool availability data is not only used to control tool distribution but also very influential in determining tool requirements plans. The next step after designing a tool management system is to analyze the impact that occurs from the application of a tool management system applied to a labor-intensive industry. The method applied in this analysis is the collection and analysis of current conditions and then compared with conditions that will occur as a consequence of implementing the system. In addition, an analysis of the need for the application of a tool management system is also carried out in terms of hardware requirements and systems for data processing.]]>
<![CDATA[Analisis kekuatan tarik, kekerasan dan struktur mikro pada pengelasan SMAW yang menggunakan elektroda E 6013 dengan variasi gerakan elektroda ]]>
<![CDATA[Andri Santoso]]>;
<![CDATA[Awal Syahrani]]>;
<![CDATA[M Mustafa]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 13 No. 2 (2018): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v13i2.96
<![CDATA[This study aims to determine the effect of electrode motion on the mechanical properties and microstructure of SMAW welding with E 6013 electrode. The SMAW welding process uses a variety of straight, zigzag and spiral electrode movements. The electrode used is E 6013 with a diameter of 3.2 mm. The current size used is 90 Amperes. The type of camp used is a V-shaped with an angle of 60o, a root height of 2 mm and a root range of 3 mm. Tests conducted are tensile testing, hardness and microstructure observation. The highest tensile strength value in the spiral electrode motion is 616.6 Mpa and the lowest in the zig-zag electrode is 596 MPa. While the highest strain value found in the motion of zig-zag electrode is 22.91% and the lowest in the spiral electrode movement is 19.41%. For the highest modulus of elasticity is found in the straight electrode movement of 12070.02 Mpa and the lowest in the motion of the zigzag electrode is 10339,48 Mpa. The highest hardness value is in welding with zigzagging electrode movement that is 147,44 kg / mm2 and the lowest in straight electrode movement is 143,19 kg / mm2]]>
<![CDATA[Pengembangan model perhitungan kompleksitas proses sangrai kopi Indonesia menuju sistem otomatisasi ]]>
<![CDATA[Hendri Dwi Saptioratri Budiono]]>;
<![CDATA[Mohammad Anindya Fausta]]>;
<![CDATA[Oka Widiantara Suputra]]>;
<![CDATA[Trimitra Mahesa Aditya]]>;
<![CDATA[Rahman Muhamad Zuhuda]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.414
<![CDATA[The process of roasting coffee to obtain consistent coffee bean product quality and in accordance with market preferences is quite complex and requires the expertise of operators who have years of experience. This study aims to present a model for calculating the complexity of the coffee roasting process manufacturing system as a type of measurement tool for a process to assess the existing process and estimate the initial costs at the design stage before increasing in the process of automation of the roasting process. The researcher adapted and developed the complexity calculation model proposed by W. H. El-Maraghy to the scope of coffee roasting, especially Solok Radjo Arabica and Bengkulu Robusta coffee beans. In this research, the roasting process was carried out with a pre-heating temperature of 160°C with a roasting duration of 16 minutes. Based on this research, the results show that the most important aspects that influence the complexity of roasting coffee beans based on roast level are roast color, mass, and dimensions resulting from the roast profile of coffee beans. In addition, variations in RPM will affect the temperature of the turning point and end point temperature of the beans. The highest complexity index was found in Bengkulu Robusta coffee beans with an RPM of 90 and a dark roast level of 9.9.]]>
<![CDATA[Bonded logistics center and its impact on national automotive manufacturing industry ]]>
<![CDATA[Achmad Riadi]]>;
<![CDATA[Sunaryo]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.416
<![CDATA[Pusat Logistik Berikat (PLB) or Bonded Logistics Center has been listed as a part of the Indonesia Economy Policy Volume II under the government of President Joko Widodo, as regulated in Government Regulation (PP) Number 85 Year 2015. PLB operations are expected to make national logistics activities more efficient, increase the availability of goods/raw materials needed by industries, increase local/foreign investment, and assist in the development of Indonesia as a logistics hub in the Asia Pacific region. The existence of PLB for automotive manufacturing industry is believed to have a special impact both in supporting the availability of automotive components and in increasing the competitiveness of exports of national automotive products. Especially with the regulation stipulated in Presidential Regulation Number 55 Year 2019, concerning the acceleration of the battery-based electric motor vehicle program. This paper aims to provide an analysis of the existence of PLB and its impact on national automotive manufacturing industry. The study was conducted by applying a dynamic system simulation to test the hypothesis of the PLB impact. Simulation model is a dynamic system approach using the Vensim®PLE8.0.4 program. The simulation results show the efficiency that can be obtained with the PLB. The ease of customs facilities obtained from PLB as well as the reduction in custom clearance time have a significant positive impact on the national automotive manufacturing industry.]]>
<![CDATA[Efek panas pada besi dan stainless steel 304 untuk penyaring udara mesin incinerator ]]>
<![CDATA[Agung Sudrajad]]>;
<![CDATA[Muhammad Rafli Gumay Putra]]>;
<![CDATA[Sunardi]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.417
<![CDATA[Particulate matter in the environment can give a bad effect to the body of human through the respiratory process. These conditions require researchers to innovate to reduce the air pollution. The electrostatic precipitator (ESP) filter system is one technology for reduce of particulate matter by the combustion of Incinerator. This system has a good efficiency and very good in reducing of particulate matter produce by Incinerator. The materials used for the ESP system air filter in this study were iron and Stainless Steel 304. The tests carried out were the corrosion rate test, and X-Ray Diffraction (XRD) where the corrosion rate of the material will be measured using the weight loss method and seen the content and elements involved. changed using XRD. The results shows that the corrosion rate test, iron has a corrosion rate decrease of 66% and Stainless Steel 304 by 73%.. The Scanning Electron Microscope (SEM) EDX results show that after heating both specimens have the same ferrite pearlite phase but for iron specimens, pearlite is more dominant, and stainless steel 304 is more dominant in ferrite. While for the XRD results, there are wave changes on the graph of the iron and stainless steel 304 specimens before and after being heated, which means that there are differences in the phase of the two specimens.]]>
<![CDATA[Identifikasi kinematika partikel air dan karakterisasi gelombang ombak dengan metode video tracker ]]>
<![CDATA[Jamiatul Akmal]]>;
<![CDATA[An Nisa Magnolia]]>;
<![CDATA[Ahmad Suudi]]>;
<![CDATA[Novri Tanti]]>;
<![CDATA[Asnawi Lubis]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.418
<![CDATA[As an archipelagic country, Indonesia has great potential for marine resources. This potential must be supported by theoretical studies as the basis for the development of marine technology. For this reason, in this study a laboratory scale wave medium was created as a medium for observing the kinematics of water particles and defining the equations of wave motion. Water particles are represented by buoy balls that are installed at various depth levels. The motion of the buoys is recorded with a video recorder and then converted into a displacement graph with a video tracker application. The wave generator is designed to get a variety of wave sizes and types. The wave generator moves back and forth and is connected to an eccentric rotor by a sliding crank mechanism. The eccentricity of the rotor can be varied, in this study it was determined that e1=3cm, e2=5cm and e3=8cm. From the test results it can be concluded that for e1 the type of wave that occurs is in accordance with the Airy Equation, while for e2 and e3 the waves are obtained in accordance with the Stokes Equation. In addition, it is also known that the displacement of water particle movement is maximum on the surface and decreases at deeper levels.]]>
<![CDATA[Produksi biocoal berbahan dasar tandan kosong kelapa sawit sebagai bahan bakar alternatif pada pembangkit listrik tenaga uap dengan metode torefaksi pada temperatur 200oC ]]>
<![CDATA[Awaludin Martin]]>;
<![CDATA[Yogie Rinaldy Ginting]]>;
<![CDATA[Iwan Kurniawan]]>;
<![CDATA[Andika]]>;
<![CDATA[Dhiki R. A.]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.424
<![CDATA[Coal fired steam power plants (CFSPP) are one of the industries that use fossil energy as a main fuel, causing fossil energy reserves are decreasing, for that the switchover of using fossil energy into new and renewable energy is necessary. To achieve the energy mix target, Indonesian Government through to Ministry of Energy and Mineral Resources was have the regulation to increasing the use of new and renewable energy through the co-firing method for steam power plants by utilizing biomass as a coal mixture. However, biomass from empty fruit bunches has several weaknesses as fuel and one of the weakness of empty fruit bunch is have a low heating value. Torrefaction method at 200oC is a method was use to increasing the heating value of biomass from empty fruit bunches. In previous research using the torrefaction method at a temperature of 200°C for 30 minutes obtained bio-coal with the highest mass yield and energy yield 78% and 96.11% with a heating value 4799.27 kcal/kg where the heating value is equivalent to the heating value of coal. This research is a continuation of previous research, where in the previous study the weight of sample of empty fruit bunch was only 1000 g, in this study the sample weight was varied up to 100 g with the same torrefaction method, namely with a temperature of 200°C and a torrefaction process time of 30 minutes using fixed bed reactor. The result of this research is bio-coal with the highest calorific value of fuel at 6,253 kcal/kg with a mass variation of 1000 g.]]>
<![CDATA[Pengaruh variasi layout runner dan melt temperature terhadap fill time dan defect pada proses injection molding sikat gigi ]]>
<![CDATA[Arif Budi Wicaksono]]>;
<![CDATA[Agus Surachman]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.425
<![CDATA[This research aims to determine the influence of layout variations, runner system and melt temperature to the characteristics of radial and grid layouts. The runner system is varied with two types of runners that are grids with H and Block runners, Radial with Star and Block. Melt temperature is variated at 230oC, 240oC and 250oC. The best results are obtained using grid layout with block runner system and melt temperature at 230oC with fill time, defects and optimum quality prediction. Optimum mold unit design with grid layout and block runner system with dimensions of 550 x 300 mm with clamping force of 686.72 kN. One of the machines that can be used SUN-110 with clamp fore 1000 kN.]]>
<![CDATA[Analisis kegagalan dan evaluasi sisa umur duplex filter tank akibat corrosion under insulation pada sistem heat recovery steam generator kapasitas 300.000 BCWEPD ]]>
<![CDATA[Aidil Dwi Anugerah]]>;
<![CDATA[Priyo Tri Iswanto]]>;
<![CDATA[Viktor Malau]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v18i1.426
<![CDATA[A duplex filter tank in a heat recovery steam generator (HRSG) system which has been operating for 18 years experienced an unplanned shutdown due to leakage. Duplex filter tank consists of two tanks which are covered by an insulation to maintain the temperature of the feedwater as the main source of steam production in HRSG. However, along with continuous operation as well as tanks located in a humidity environment, this will affect the degradation of tank thickness due to corrosion under insulation (CUI). Then, it will lead to leaks resulting in unplanned shutdown and loss steam production opportunity (LPO). This study aims to examine the failure model and the root causes of failure in order to increase the reliability of the unit as well as the appropriate recommendations for preventing CUI in tank and piping systems. The object of this research is the existing duplex filter tank sample and the new duplex filter tank sample. The research method used to determine the condition of the two samples was visual observation, microstructure observation, chemical composition test, tensile test, hardness test, and corrosion rate test. The results showed that the corrosion under insulation (CUI) at the bottom of the duplex filter tank was evenly distributed and at one point occurred due to the thickness of the tank that had exceeded the permissible limit. The root cause of the failure is due to a gap between the insulation and the tank which allow the environment and rainwater to enter and be trapped under the insulation.]]>
