IPTEK The Journal of Engineering
IPTEK The Journal of Engineering (E-ISSN: 2337-8557) is an academic journal on the issued related to engineering and technology. IPTEK The Journal of Engineering published first time in August 2014. From 2014-2018 (Volume 1-4) IPTEK The Journal of Engineering publish three issues (numbers) annually (April, August, and December). Since 2019 published annually in April and August. It is open to all scientist, researchers, education practitioners, and other scholars. Therefore this journal welcomes various topics in different engineering disciplines. Our target is to reach all universities, research centers and institutes in the globe. Call for Papers IPTEK The Journal of Engineering is an open-access journal, which means that visitors all over the world could read, download, cite, and distribute papers published in this journal for free. We adopt a peer-review model, which insured fast publishing and convenient submission. In addition to peer-reviewed original research papers, the Editorial Board welcomes original research reports, state-of-the-art reviews and communications in the broadly defined field of engineering science and technology. Theses, dissertations, research papers, and reviews are all acceptable for publication. All topics should relevant to the issues faced by industries, governments, and communities. The broad-based topics may be covered by the following knowledge areas: Computer Engineering and Information Systems (Telematics, Algorithms and Programming, Network Based Computing, Smart Computing and Vision, Intelligent Information Management, Computer Architecture and Networking, Applied Modeling and Computing, Graphics Interaction and Games, Software engineering, Information Technology Infrastructure and Security, Information Systems Management, Data Engineering and Business Intelligence, Data Acquisition and Information Dissemination, Enterprise System, and Smart Cities and Cyber Security) Civil Infrastructure Engineering (Hydrotechnics and Surveying, Construction Implementation Management, Building Materials and Structures, and Transportation and Geotechnics) Mechanical Engineering (Energy Convertion, Metallurgical and Materials Engineering, Mechanical Design, and Manufacture) Electrical Engineering Automation (Cyber Physical, Automation, and Industrial Robots, Programmable Logic Controller and Control System, Antennas and Propagation, Instrumentation, Measurement and Power System Identification, Multimedia Telecommunications Network, Multimedia Communication, Electric Energy Conversion, Electric Power System Simulation, High voltage, System and Cybernetics, Microelectronics and Embedded Systems, Biocybernetics, Instrumentation and Biomedical Signal Processing, Multimedia Computing and Machine Intelligence, and Digital Signal Processing) Chemical Engineering (Applied Chemistry, Biochemical and Bioprocess, Advance Functional Materials and Analysis, Thermodynamic, Chemical Reaction, Material and Nanocomposite, Bioenergy, Wastewater Treatment, Process Integration, Fluid Mechanic, and Sustainable Industrial Systems) Instrumentation Engineering (Control Instrumentation, Measurement Instrumentation, Photonic Engineering, Vibration and Acoustics, and Embedded Systems and Physical Cyber) Business Statistics (Business Analytic, and Quality and Productivity Engineering) And physical, chemical, biological, and environmental sciences that are directly related to engineering.
Articles
96 Documents
<![CDATA[Modelling of Payout Ratio: A Panel Regression Analysis for Indonesian Listed Bank ]]>
<![CDATA[Noviyanti Santoso]]>;
<![CDATA[Rizka Widya Permatasari]]>;
<![CDATA[Lucia Aridinanti]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 6, No 1 (2020) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v6i2.a7211
<![CDATA[The Indonesian economy is a bank-based economy, where the economy relies on the existence of the banking sector as a source of financing, so a healthy and efficient banking system is the key to success in the sustainability of national economic development. The company's financial performance can be improved by going public. In companies that go public, dividends are one of the motivations of investors to invest their funds in the capital market, because it is a form of return on investor investment and an increase in wealth. The purpose of this study is determining the best model of the dividend payout ratio (DPR) in the banking sector by predictor variables such as ROI, DER, ROE, PER, and CAR using panel regression analysis. Based on the results of the analysis it was concluded that the factors that influenced the banking sector DPR were ROI and CAR with a good model of 86,7%.]]>
<![CDATA[Prediction of Gas-Liquid Equilibria of CO2-K2CO3-MDEA-H2O System by Electrolyte UNIQUAC Model ]]>
<![CDATA[saidah altway]]>;
<![CDATA[Kuswandi Kuswandi]]>;
<![CDATA[Ali Altway]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 1, No 1 (2014) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v1i1.a437
<![CDATA[Carbon dioxide is an acid gas that can be harmful impurity especially in the chemical industry. Various processes have been developed to reduce the CO2 from the gas stream. Chemical absorption is the most economical method for CO2 separation. One of the processes that is widely used in industries is Benfield process with K2CO3 (potassium carbonate) as a solvent and amine as a promotor. In this study, MDEA (Methyldiethanolamine) is used as a promotor. As a reference for designing CO2 absorption/stripping packed column in industries, gas-liquid equilibrium data were required. The objective of this study is to predict the gas-liquid equilibria of CO2-K2CO3-MDEA-H2O system at 30oC and atmospheric pressure with 30% K2CO3 and variation of weight percent of MDEA 2, 5, 8, and 10%. The model used in this study is an electrolyte UNIQUAC. The simulation was conducted using Matlab programming. The deviation of predicted CO2 partial pressure with the experimental data is 14.85%. The energy interaction parameters of electrolyte UNIQUAC model were obtained from fitting with the experimental data by Least Square method. The results of this study represented that with increasing CO2 partial pressure, CO2 loading increased, and also at the same partial pressure of CO2, CO2 loading increased with the increase of weight percent of MDEA]]>
<![CDATA[Discrepancy of Home-Based School Regulation in West Jakarta Study Case of Student High School of 78 and 16 ]]>
<![CDATA[Nisa Maulia]]>;
<![CDATA[Raldi H Koestoer]]>;
<![CDATA[Ratna Saraswati]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 5, No 2 (2019) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v5i2.a4992
<![CDATA[The Local Government has been limiting prospective students by implementing home-based school regulations since 2013. The study highlights the spatial pattern of trip distribution of Student High School of 78 and 16 in which both are located near the west border of Jakarta as the impact of government regulation. Primary data were collected using questionnaires and GPS receiver used to capture the coordinate points of schools and students’ home address. Secondary data included Administrative and Road Network Map. The methods applied involved Mapping Network Analysis and Statistical Cross Tabulation. Network analysis was performed to evaluate nearest school to student and a set of origin-destination (OD) matrix. Cross tabulation was applied to evaluate the frequency of student travel pattern. The analyses showed that Student High School of 78 trip distribution was widen and widespread than of Student High School 16.]]>
<![CDATA[Design of PLC Based Control System for Rotary Flexible Fixture with PID Compensator ]]>
<![CDATA[Adi Susanto]]>;
<![CDATA[Sampurno Sampurno]]>;
<![CDATA[Suhardjono Suhardjono]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 4, No 3 (2018) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v4i3.a5018
<![CDATA[Machining process consist of machine tool, cutting tool and work piece that must securely held by jig and fixture. A rotary flexible fixture prototype then developed, to locate work piece at desired angular position using rotary and tilt angular positioning components to complement machining processes such as CNC mill, EDM, machining center, etc. This research focused on designing PLC based control system with PID compensator for the prototype, this paper however deal with rotary component in particular. Preliminarily, all components assembled into closed-loop transfer function and calculated its frequency domain overall transfer function. Analysis of control system stability then followed, using such methods as Routh-Hurwitz, Nyquist and Root Locus. Next, the system’s time responses need to be evaluated, design targets are rise time less than 0.2 second, settling time not exceeding 0.4 second and zero steady state error with ±2% allowable error. If target are not satisfied, then use of PID compensator. Stability analysis results shows the system are stable according to Routh-Hurwitz, Root Locus, and Nyquist criteria. Time responses analysis results in rise time 0.267 second and settling time 0,476 second. While, the system yield zero steady state error. To meet design targets, PID compensator were employed, after tuning at proportional gain value 1.5, rotary component reached rise time 0,178 second, settling time 0,317 second, well within design target. These results are essential for PLC programming, assembly process and general consideration or recommendation for selecting components to gain a simple yet better perform control system.]]>
<![CDATA[Analysis Of Head Losses Consequent Section Diameter, Pipe Material and Flow Debit Using Contrast Test (Scheffe’s Method) at 900 Elbow Joint ]]>
<![CDATA[Saut Kasdiardi Silalahi]]>;
<![CDATA[Am. Mufarrih]]>;
<![CDATA[Irwan Setyowidodo]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 3, No 3 (2017) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v3i3.a3081
<![CDATA[Piping system is needed notice on group of high population people. Water flows come out from people residend sometimes unstable when used. This anomaly can be happened because factor of section diameter, pipe material, and flow debit passed through pipes elbow. This research intend to know effect section diameter, pipe material varians, flow debit of head losses and knowing coefficient losses consequent reynold number. This research is using factorial desain orthogonal array L12 then data analysis used Analysis Of Variance (ANOVA) with assistance minitab 16 software and contrast test (Scheffe’s Method). The results of this experiment head losses highest value of pipe section diameter 1 inch towards ¾ inch, PVC (Poly Vinyl Cholide) pipe material, and flow debit 20 liter/minutes is 42.33 mm. For head loses lowest value of pipe section diameter ¾ inch toward 1 inch, PE (Polyethylene) pipe material, and flow debit 10 liter/minutes is 5.33 mm, although highest coefficient losses of section diameter ¾ inch towards 1 inch, PVC (Poly Vinyl Cholide) pipe material, and flow debit 10 liter/minutes is 1.4602. ANOVA result and contrast test (Scheffe’s Method) concluded section diameter, pipe material, and fluid flow debit significant effect of head losses. Based the conclusion of research, reseacher suggest that small section diameter toward big section diameter, better pipe material and low flow debit if want to reduce head losses value of piping system.]]>
<![CDATA[Automated Pet Feeder Called Smart Pakan using 3D Printer with Open Source Control System ]]>
<![CDATA[Rizaldy Hakim Ash Shiddieqy]]>;
<![CDATA[Bayu Adhi Saputro]]>;
<![CDATA[Fatan Odhi Dandha]]>;
<![CDATA[Liza - Rusdiyana]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 6, No 2 (2020) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v6i3.a7896
<![CDATA[In this paper, an automatic pet feeding machine is built using the 3D Printer machine and an opened source control system to help people with busy activities to be able to feed their pets on time. The machine is built using 3D Printer machine. The control system is built using the NodeMCU ESP8266 platform module and ultrasonic sensors. The controlling device uses a smartphone that is installed blynk application software that has the principle of the Internet of Things. The machine works by opening it’s valve to control the water’s discharge, a servo motor to open the feed container, as well as a timer to regulate the time of feeding. The valve can be set in 4 conditions. There are 10 degrees, 20 degrees, 30 degrees and up to 40 degrees. Then for the feed distance’s display it will provide information about the distance of the feed to the sensor, for a maximum distance of 9 cm in accordance with the distance sensor attached to the roof of the feed container with the sensor attached to the bottom of it. This machine can work continuously and automatically as long as there is an electricity source in the house and the owner holds the control of the blynk application software on their phone..]]>
<![CDATA[The Effect of Ship Coefficients on the Efficiency Gain f Propeller-Vane System ]]>
<![CDATA[Setyo Leksono]]>;
<![CDATA[IKAP Utama]]>;
<![CDATA[MA Djoni]]>;
<![CDATA[WD Aryawan]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 2, No 1 (2015) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v2i1.a467
<![CDATA[This paper discusses a correlation between non dimensional parameter of the ship (L/B,B/T, wake fraction, ratio between induced and advance velocity, thrust loading coefficient) and energy gain by applying vane-turbine in the propeller slipstream. The data based on the basis of statistical data (numerical) and model testing. The correlation data can be calculated by quantifying the contribution of causal variables to a targeted effect variable directly and indirectly through other variables and this would be examined by Path analysis. By using this coefficient, it is possible to demonstrate which variable has the main contribution on the efficiency gain. The Data analysis of Microsoft Office Excel software is used to approach the calculation. It is found that L/B and CT affected indirectly the efficiency gain of vane-turbine]]>
<![CDATA[Study Literature of Extraction Lipid Method from Microalgae Nannochloropsis sp ]]>
<![CDATA[Tanti Irma Nuraini]]>;
<![CDATA[Adelya Kristia Putri]]>;
<![CDATA[Yustia Wulandari Mirzayanti]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 6, No 1 (2020) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v6i2.a7231
<![CDATA[Biodiesel is a promising alternative fuel obtained from plant oils and animal fats through the esterification process with alcohol. Lipid microalgae Nannochloropsis sp. can be used as raw material for the production of biodiesel or biofuel with oil content in the microalgae Nannochloropsis sp. as much as 21.3 - 32.7% so, it has the potential to be used as a raw material in making biodiesel. Biodiesel produced from microalgae biomass is the most suitable alternative fuel for the future and environmentally friendly fuel. In microalgae lipid extraction, Nannnochloropsis sp. using several process aids such as autoclave, microwave, and soxhlet. Different types of solvents are used to determine the% yield of lipids present in microalgae. Extraction was carried out to compare the extraction method using autoclave, microwave, and soxhlet to obtain the best method that produced the most substantial % lipid. An autoclave obtained the most abundant lipid yield with n-hexane solvent with a ratio of 3: 1 solvent and algal oil. Thus, this review describes the lipid extraction of the microalgae Nannochloropsis sp. with various extraction aids and different solvent types related to lipid production over the past few years.]]>
<![CDATA[Implementation of Genetic Algorithm for Parameter Tuning of PID Controller in Three Phase Induction Motor Speed Control ]]>
<![CDATA[Dedid Cahya Happyanto]]>;
<![CDATA[Ardik Wijayanto]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 1, No 1 (2014) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v1i1.a442
<![CDATA[Induction motor at low speeds has a tough speed setting sets the width of the range. This study tested by giving the load motor disorders to describe the condition. The method used for vector control system so that the resulting performance is good at setting the motor speed and torque. This method is used in setting the Proportional Integral Derivative (PID) Tuning parameter settings based on Genetic Algorithm (GA) to provide a dynamic response to changes in speed and load torque on the motor, so we get smoothness at any speed change and braking and maximum torque motors. Optimization function is required to obtain a new PID parameter values each input value changes or load disturbances, in terms of the initial determination of these parameters using Ziegler-Nichols method based on frequency response. Tests were performed at a speed of approximately 1800 rpm value rise time of about 10 seconds after generation added, at a rate of 1800 rpm rise time value of the average remains around 9 seconds, but slightly reduced the oscillations in the response, and the speed of approximately 1700 rpm rise time value of the average is 9 seconds. The test results show that GA-based PID controller has a good response in approximately 0.85% overshoot at the motor speed change and braking]]>
<![CDATA[Eksperimental Study the Effect of Additional Flat Plate Reflector to Performance the Sinusoidal Solar Water Heater ]]>
<![CDATA[Dedy Ashari]]>;
<![CDATA[Djatmiko Ichsani]]>
<![CDATA[ IPTEK The Journal of Engineering Vol 5, No 1 (2019) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian kepada Masyarakat ]]>
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DOI: 10.12962/j23378557.v5i1.a5015
<![CDATA[New Renewable Energy is currently not fully utilized. Energy sourced from the sun is one of the most exploited energy sources today in several countries in the world, which in large scale has been used as a power plant. The solar collector is a heat exchange device that serves to convert solar radiation energy into a form of heat energy to heat a working fluid, such as water and air. Various methods have been undertaken to improve the performance of solar collectors, including using flat plate reflectors. Reflectors are used to reflect the diffused sunlight to focus on solar cells and ultimately increase the value of solar cell output power. Experimental studies in this study were conducted to see the performance of a solar collector sinusoidal with and without the addition of reflectors under varying discharge conditions. Variations of mass flow rate in this study were 18 and 20 liters/hour. The reflector angle on the solar collector is set at 40° on both sides of the reflector. From this study, the results for the efficiency of a solar collector with the addition of a reflector are the highest at 43,91% at a mass flow rate of 20 liters / hour.]]>
