Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik https://jurnalteknik.unjani.ac.id/jt <p><strong>Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik </strong>is an <strong>Indonesian and English</strong> <strong>peer-reviewed journal</strong>, which is published<strong> twice a year</strong>. Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik has been <strong>published by Faculty of Engineering, Universitas Jenderal Achmad Yani</strong> in<strong> May</strong> and <strong>November</strong> since 2001 with several 10-20 papers per year. An online version published since 2017 with an online collection and publication based on open access journal and under a <strong><a href="https://creativecommons.org/licenses/by-nc-sa/4.0/deed.id">Creative Commons Attribution 4.0 International License.</a></strong></p> Fakultas Teknik - Universitas Jenderal Achmad Yani en-US Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik 2580-2615 <p>Penulis yang&nbsp;menyerahkan&nbsp;artikel di&nbsp;Jurnal Teknik: Media Pengembangan dan Aplikasi Teknik untuk keperluan publikasi telah mengetahui bahwa&nbsp;Jurnal Teknik: Media Pengembangan dan Aplikasi Teknik memberikan akses terbuka terhadap konten untuk mendukung pertukaran informasi mengenai ilmu pengetahuan, sesuai dengan&nbsp;penerbitan daring yang berbasis Open Access Journal dan mengikuti&nbsp;<a href="https://creativecommons.org/licenses/by-nc-sa/4.0/deed.id" target="_blank">Creative Commons Attribution 4.0 International License</a>. Sehingga penulis setuju dengan ketentuan-ketentuan berikut:<br>1. Penulis&nbsp;memegang&nbsp;hak cipta dan memberikan hak publikasi pertama kepada pihak jurnal dengan pekerjaan secara bersamaan <br>&nbsp; &nbsp; di bawah&nbsp;<a href="https://creativecommons.org/licenses/by-nc-sa/4.0/deed.id" target="_blank">Creative Commons Attribution 4.0 International License</a>&nbsp;yang memungkinkan orang lain untuk berbagi pekerjaan <br>&nbsp; &nbsp; dengan pengakuan kepengarangan karya dan publikasi&nbsp;pertama artikel tersebut&nbsp;di&nbsp;Jurnal Teknik: Media Pengembangan dan <br>&nbsp; &nbsp; Aplikasi Teknik.<br>2. Penulis dapat melakukan perjanjian tambahan untuk hak distribusi non-eksklusif artikel yang telah diterbitkan di jurnal ini <br>&nbsp; &nbsp; (misalnya, posting ke sebuah repositori institusi atau menerbitkannya dalam sebuah buku), dengan&nbsp;mengakui bahwa<br>&nbsp; &nbsp; publikasi pertama dilakukan di&nbsp;Jurnal Teknik: Media Pengembangan dan Aplikasi Teknik.<br>3. Penulis diizinkan dan didorong untuk menyebarkan karya mereka secara daring (misalnya, dalam repositori institusi atau <br>&nbsp; &nbsp; laman web penulis)&nbsp;setelah artikel terbit (proses penerbitan artikel selesai). Hal ini terkait dengan imbas dari pertukaran <br>&nbsp; &nbsp; informasi yang produktif (Lihat&nbsp;<a href="http://opcit.eprints.org/oacitation-biblio.html" target="_blank">Pengaruh Open Access</a>).</p> Simulasi Indoor Building Coverage (IBC) Pada Teknologi Long Term Evolution (LTE) Di Gedung Hindarto Joesman Fakultas Kedokteran UNJANI https://jurnalteknik.unjani.ac.id/jt/article/view/436 <p>Hindarto Joesman Building, Faculty of Medicine is one of the lecture buildings at Jenderal Achmad Yani University which consists of 4 floors and has a building area of ??4125.6 m². The building has a low signal quality for the indoor LTE network. This is due to the construction and materials in the building which can weaken the quality of the LTE signal received. These conditions make the Faculty of Medicine UNJANI building require a separate indoor network installation to cover user needs inside the building. Indoor Building Coverage planning for this building can help to improve signal level and value of Reference Signal Received Power (RSRP) and Signal to Interference Noise Ratio (SINR). The process of calculating coverage planning in indoor network planning uses the Cost propagation model 231 Multi Wall Model and is simulated in the Radiowave Propagation Simulator 5.4 software. Based on the simulation results, the average RSRP value is -20.59 dBm and SINR is 34.30 dB. The average value can cover the signal quality in the building area of ??89.12% for RSRP and 97.45% for SINR. The results of the planning and simulation of the Indoor Building network have met the standard RF parameters for operators.</p> Gusvira Lestari Hajiar Yuliana Sofyan Basuki Copyright (c) 2022 Gusvira Lestari, Hajiar Yuliana, Sofyan Basuki http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 01 11 10.55893/jt.vol21no1.436 Diagnosis Kondisi Minyak Tranformator Menggunakan Teknik Dissolved Gas Analysis https://jurnalteknik.unjani.ac.id/jt/article/view/428 <p>At the Cikalong hydropower plant there are 3 power transformers with a voltage rating of 6.3/77 kV, because of their long life, it is necessary to analyze the condition of the transformer oil. One way to determine the level of fault gas contained in transformer oil is the DGA (Dissolved Gas Analysis) test. DGA will extract the gas to find out indications of disturbance based on the interpretation of the dissolved gases data, namely the Total Dissolved Combustible Gas (TDCG), Key Gas, Roger's Ratio, Doernenberg's Ratio and Duval's Triangle methods. This method is in order to determine the condition of the transformer oil is normal or not, measure the breakdown voltage value and calculate the correlation value between operating hours and the amount of power production. The results of the DGA analysis on transformer units 1, 2, and 3 of the Cikalong hydropower sub-unit show the TDCG value in condition 1, which includes all transformers in good condition. The value of the correlation coefficient between hours of operation and the number of kWh production with TDCG is 0.267 and 0.297, respectively, which indicates the relationship between these variables is a weak relationship (standard value is close to 1).</p> Fauzia Haz Muhammad Rizki Akbar Giri Angga Setia Copyright (c) 2022 Fauzia Haz, Muhammad Rizki Akbar, Giri Angga Setia http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 12 21 10.55893/jt.vol21no1.428 Perancangan Antena Mikrostrip Frekuensi Ganda Menggunakan Metode Y Slot untuk Sistem Komunikasi 5G dan WiFi https://jurnalteknik.unjani.ac.id/jt/article/view/417 <p>This research proposes the design of dual-frequency microstrip antenna using the Y <em>slot</em> method. Antenna are designed with a working frequency of 3,5 GHz for 5G and 5 GHz communication systems for Wi-Fi using RT duroid 5880 substrates with a constant value in electricity of 2,2, a thickness of 1,575 mm and a loss of tangents of 0,009. The Y <em>slot</em> method is used to generate antenna that can work on dual bands and then add <em>inset feed </em>to the antenna in order to optimize the <em>return loss</em> value of the proposed antenna. From the design and simulation has been successfully obtained antennas that can work at frequencies 3,5 GHz and 5 GHz. The addition of <em>inset feed</em> on the antenna results in a <em>return loss</em> value for the frequency of 3,5 GHz which is -17,86 dB and a frequency of 5 GHz which is -36,27 dB. <em>Inset feed </em>renching on antenna design using Y <em>slot</em> method successfully optimizes <em>return loss</em> value at 5 GHz frequency of 54,34% compared with single element antenna.</p> Wirdatul Usrah syah alam indra Surjati Copyright (c) 2022 Wirdatul Usrah, syah alam, Indra Surjati http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 22 31 10.55893/jt.vol21no1.417 Analisis Pengaruh Variasi Diameter Driven Pulley Terhadap Output Kecepatan Putar dan Torsi Akhir pada Trainer Transmisi Toyota Kijang Innova E 2.0 M/T https://jurnalteknik.unjani.ac.id/jt/article/view/193 <p class="ParagrafAbstrak"><span lang="EN-US">Pulley is a receiver or converter of rotary power and moment of force associated with each other using a v-belt, while the transmission is a mechanism to convert power from input power to produce variable output power. Torque and RPM are affected by gear ratio or pulley size. The size of pulley on the input shaft also greatly influences torque and RPM. Where necessary to do a trial-driven pulley size. Therefore, this research was conducted to determine the effect of driven pulley size on the output rotational speed and final torque of driven pulley size used. This research uses 3 kinds of driven pulley sizes. Driven pulley 1 (150 mm), the highest torque is 1013.23 Nm and the highest output rotational speed is 1339.5 rpm. In driven pulley 2 (200 mm), the highest torque is 1350.97 Nm and the highest output rotational speed is 1004.62 rpm. While driven pulley 3 (250 mm), the highest torque is 1688.74 Nm, and the highest output rotational speed is 803.7 rpm. In the ANOVA test results, there were no significant differences between the three of pulley diameter variation, indicated by the Sig. 0.395 for output rotational speed and Sig. 0.491 for final torque.</span></p> Febri Panji Diharja Mochammad Arif Irfa’i Mohammad Munib Rosadi Copyright (c) 2022 Febri Panji Diharja, Mochammad Arif Irfa’i, Mohammad Munib Rosadi http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 32 41 10.55893/jt.vol21no1.193 Pengaruh Kontaminan Air terhadap Tegangan Tembus Isolasi Cair Minyak Mineral dan Nabati sebagai Alternatif Isolasi Minyak Transformator https://jurnalteknik.unjani.ac.id/jt/article/view/441 <p>One of the effects of reduced transformer life is the frequent occurrence of disturbances, disturbances that can occur in the form of contamination of insulating oil which has an impact on transformer damage. To reduce the damage, a research was carried out, in this study it was carried out to see the effect of water contaminants contained in the insulation of transformer oil using the Breakdown Voltage method by looking at the value of the translucent voltage. There are 2 types of insulating oil used during testing, mineral, and vegetable oil, while the test equipment used is the BAUR Oil Tester DPA, with the standard IEC 60156:2018 test equipment. Which is adapted to the standard specification SPLN 49-1:1982 which states that new oil has a breakdown voltage value of 30 kV/2.5 mm. The results of the test show that the breakdown voltage value is influenced by water contaminants where the more contaminants contained, the faster the breakdown voltage value will decrease. This research can be an indication to maintain the transformer resistance.</p> Christiono Miftahul Fikri Dhami Johar Damiri Muh. Rezha Safariansyah Syahty Pratiwi M. Reza Hidayat Copyright (c) 2022 Christiono, Miftahul Fikri, Dhami Johar Damiri, Muh. Rezha Safariansyah, Syahty Pratiwi, M. Reza Hidayat http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 42 51 10.55893/jt.vol21no1.441 Kajian Optimasi Kapasitas Danau Tempe untuk Mengurangi Banjir di Kabupaten Sidrap, Kabupaten Soppeng, dan Kabupaten Wajo - Provinsi Sulawesi Selatan https://jurnalteknik.unjani.ac.id/jt/article/view/431 <p>Tempe Lake is a floodplain lake in South Sulawesi Province. The capacity of Tempe Lake is affected by the inflow into the lake. The high intensity of rain causes the lake water to overflow and flood the area around the lake. To reduce the flood inundation, an optimization study was carried out on the capacity of Tempe Lake. Optimization is carried out by adjusting the optimal height of the gate opening on the Tempe Moveable Weir using a hydrological model. The curve number (CN) of rivers flowing into the lake is used, which is a function of 2 land cover scenarios, namely the existing condition and the RTRW plan for South Sulawesi Province. Based on hydrological modeling, it was found that the inflow of Tempe Lake (Q<sub>25</sub>) for the existing condition scenario was 11,825.83 m<sup>3</sup>/s, and for the RTRW plan of South Sulawesi Province, scenario was 11,606.62 m<sup>3</sup>/s. The 2D hydrodynamic modeling simulates various heights of gate openings on the Tempe Moveable Weir with respect to the flood inundation area. The optimal capacity of Tempe Lake to reduce flooding is achieved by maintaining the water level at +7.53 m above sea level with a gate opening height of 4 m.</p> Agustin Purwanti Roni Farfian Chairunnisa Rifaldi Aji Sarifudin Aditya Wisnu M.P Copyright (c) 2022 Agustin Purwanti, Roni Farfian, Chairunnisa, Rifaldi Aji Sarifudin, Aditya Wisnu M.P http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 52 63 10.55893/jt.vol21no1.431 Dehidrasi Etanol Menggunakan Zeolit Teraktivasi Irradiasi Lampu Sinar Ultraviolet (UV Light) pada Kolom Fixed Bed https://jurnalteknik.unjani.ac.id/jt/article/view/442 <p>To obtain ethanol purity &gt;99.5%, an adsorption method using Lampung Natural Zeolite (ZAL) is needed. In order to be used as a zeolite adsorbent, activation must be carried out using UV light lamp irradiation germicidal lamp 254 nm, blacklight lamp 360 nm and insect lamp 546 nm. The results of the BET characteristic test showed that the surface area of ??the non-treated zeolite was 41,331 m<sup>2</sup>/g, the germicidal lamp was 41,158 m<sup>2</sup>/g, the black light lamp was 40,399 m<sup>2</sup>/g and the insect lamp was 38,796 m<sup>2</sup>/g. The largest total pore volume was obtained from UV germicidal lamp activated zeolite 0.0690 cc/gram and the average pore size was found in insect lamp activated zeolite 35.57. After the activation of the zeolite, pellets were formed using a binder from wheat flour with a composition of 35% by weight of zeolite, then the zeolite was calcined to remove the binder that was still attached and opened the pores that were closed by the binder. The results obtained were dehydrated ethanol to increase purity using zeolite activated by UV germicidal lamp 98.69% v/v for 45 minutes, blacklight and insect lamp 98.69% v/v for 55 minutes.</p> M. Praditia Ansor Simparmin Br. Ginting Muhammad Haviz Darmansyah Copyright (c) 2022 M. Praditia Ansor, Simparmin Br. Ginting, Muhammad Haviz, Darmansyah http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 64 73 10.55893/jt.vol21no1.442 Studi Awal Pembuatan Polymer Matrix Composite (PMC) Epoksi yang Didoping Nanopartikel ZnO sebagai Material Antibakteri https://jurnalteknik.unjani.ac.id/jt/article/view/438 <p class="ParagrafIsi">Bacteria that stick to and accumulate on the toothbrush can cause infection or disease in the oral cavity. Therefore, many antibacterial materials are being researched to inhibit bacterial growth, even kill bacteria. In this preliminary research, polymer matrix composite with an epoxy matrix doped with ZnO nanoparticles was carried out as an antibacterial material on toothbrushes. The epoxy matrix, hardener, and ZnO nanoparticles are mixed until they are homogeneous and then printed like a toothbrush. The ratio of resin and hardener varied 1R:1H and 2R:1H with variations of ZnO are 0%; 0.6% and 0.9%. XRD, hardness, FTIR, and bending tests have been carried out to determine the characteristics of PMC. The hardness of PMC with ZnO 0%; 0.6%; 0.9% respectively are 55.6; 58.5; 60.5 for 1R:1H and 73.3; 74.3; 74.8 for 2R:1H. Testing for antibacterial properties using a spectrophotometer with the optical density method was carried out to determine the antibacterial. The highest antibacterial properties were PMC with ZnO 0.9% 2R:1H. Based on data, it was found that the hardness was getting higher along with the increasing ZnO nanoparticles and the ratio of resin. For testing antibacterial properties, increasing ZnO nanoparticles resulted in an increase in the antibacterial properties.</p> Manty Aldilani Ikaningsih Ghazi Alwan Rafi Djoko Hadi Prajitno Copyright (c) 2022 Manty Aldilani Ikaningsih, Ghazi Alwan Rafi, Djoko Hadi Prajitno http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 74 83 10.55893/jt.vol21no1.438 Sistem Pengaturan Pendingin Ruangan dengan Menggunakan Thermoelectric dan Blower Motor Direct Current https://jurnalteknik.unjani.ac.id/jt/article/view/430 <p>The increase in temperature affects the comfort of the dwelling, especially the bedroom area, so it requires a room conditioning tool so that the temperature remains stable and comfortable. Air conditioning tools that are commonly used by the public are now using less environmentally friendly substances because they can damage the ozone layer and are expensive to operate and maintain. Cooling and air conditioning technology is becoming very important at this time. Various technologies are already on the market to meet people's needs. This research describes the design and realization of an air conditioning control system using a thermoelectric and direct current blower motor. This system consists of a Peltier, a DS18B20 temperature sensor and a DC blower motor using PID control. In the test the blower temperature without peltier is measured with an average temperature of 25,65<sup>0</sup>C while with peltier it is 22,27<sup>0</sup>C. The most optimal PID parameters using the trial and error method are Kp = 20, Ki = 2, and Kd = 20 with a set point of 17<sup>0</sup>C.</p> Zul Fakhri Ahmad Daelami Bayudin Atik Charisma Copyright (c) 2022 Zul Fakhri, Ahmad Daelami, Bayudin, Atik Charisma http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 84 94 10.55893/jt.vol21no1.430 Penilaian Simpangan Pergerakan Interpolasi Angular pada Mesin Frais CNC Menggunakan Double Ballbar https://jurnalteknik.unjani.ac.id/jt/article/view/448 <p>The Computer Numerical Control machine is capable of making circular paths by moving two axes simultaneously in one of the XY, XZ, or YZ planes. If the coordination of the two axes is not good, it will cause circle interpolation errors that affect the roundness error in the machining workpiece. The error of the movement of the two axes can be measured using a double ballbar, to find out the error of the movement, it is varied with three feeding speeds. The research method used is the method of comparative analysis of double ballbar measurement results. some information from the measurement results is the error value of Circularity, Backlash, Squareness, Straightness, and Center offset. Feeding speed is very influential on geometric errors, the greater the value of feeding speed, the greater the error value. In addition to feeding speed, there are many factors that affect the results of double ballbar measurements, including ballscrew, clearance, servo mismatch, test repetition, etc.</p> Gagan Tabah Brilliant Dwinata Copyright (c) 2022 Gagan Tabah, Brilliant Dwinata http://creativecommons.org/licenses/by-nc-sa/4.0 2022-07-05 2022-07-05 21 1 95 105 10.55893/jt.vol21no1.448