Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi
Jurnal ini mempublikasikan artikel ilmiah berbasis penelitian, studi kasus, articles review, rekayasa dan inovasi yang mencakup teoritis maupun praktis serta pengembangannya. Topik artikel ilmiah yang dimuat ASIIMETRIK mencakup bidang Arsitektur, Teknik Sipil, Teknik Industri, Teknik Informatika, Teknik Mesin dan Teknik Elektro.
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<![CDATA[Proses Simulasi Sistem Concentrated Solar Power Equipment ]]>
<![CDATA[Arief Kurnia]]>;
<![CDATA[Dwi Rahmalina]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.1874
<![CDATA[The increase in the use of electrical energy in Indonesia is currently increasing from year to year and the population in Indonesia is increasing very rapidly, therefore we need an energy utilization technology that does not need a lot of money to operate it. Because Indonesia is located on the equator which makes Indonesia has a great potential for sun exposure. Utilization of solar energy can be done by using a technology to generate electricity from solar energy sources, namely Concentrated Solar Power (CSP) technology. Concentrated Solar Power (CSP) is a technology that uses solar energy that produces electrical energy from a component that converts heat energy into electrical energy using a Stirling engine. In this research, the solar energy utilization device developed is a Ground Base type Concentrated Solar Power (CSP) device equipped with a liquid fluid delivery system in the form of a piping system and a Stirling engine. By using a satellite dish measuring 6 feet or 1830 mm, and also added a drive system to move the parabola according to the point of efficient solar heat reception.]]>
<![CDATA[Studi Lapisan Hasil Hardfacing Dengan Variasi Arus Dan Elektroda AWS A5.13 EFe2/A5.1 E7018 ]]>
<![CDATA[Ferry Budhi Susetyo]]>;
<![CDATA[Himawan Hadi Sutrisno]]>;
<![CDATA[Rizchi Ayu Suryadewi]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.1944
<![CDATA[The current becomes a factor influencing the hardness value In the welding. The higher the welding current would affect the higher the hardness test results. If the current were used is low it will make it difficult to ignite the electric arc. Aims of this study to determine the effect of welding current (90, 110 and 130 A) and buffer layer on hardness, macro and microstructure layers are result from hardfacing using AWS A5.13 EFe2/AWS A.51 E7018 elektrodes. The hardfacing process uses a Shielded Arc Metal Welding (SMAW) welding machine with DC+ polarity. Hardfacing consists of three layers, 1st layer uses AWS A5.13 EFe2 electrode, 2nd layer uses AWS A.51 E7018 electrode, and 3rd layer uses AWS A5.13 EFe2 electrode. The increase in hardness will occur significantly after hardfacing on the base metal. The higher welding current is resulting the higher hardness value. The hardness of the 130 A specimen is higher than 90 A and 110 A specimen. In the 130 A specimen the hardness value was 468.1 VHN, and in the 90 A specimen the hardness value was 358.94 VHN.]]>
<![CDATA[Pengaruh Pemasangan Exhaust Gas Recirculation Terhadap Emisi Gas Buang Honda Supra X 100 ]]>
<![CDATA[I Wayan Sugita]]>;
<![CDATA[Catur Setyawan]]>;
<![CDATA[Amanda Utari Dewi]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.1958
<![CDATA[The increasing demand of motorcycle for humans is directly proportional to the gas emissions by motorcycle. It will cause air condition bad and can cause health problems for humans. One of the solutions for the problem gas emissions produced by motorcycle is doing a modification on exhaust pipe with using Exhaust Gas Recirculation (EGR). This study aims to know the effect of EGR on exhaust gas emission of Honda Supra X 100. The research uses the experimental methods. Emission testing be held to determine the effect after using EGR on the resulting exhaust gas elements by varying the conditions of the mixture (rich and lean), engine speed (1500, 2500, 3500, 4500, 5500 rpm) and fuel (premium, pertalite). The result after using EGR, increased emissions of HC, decreased emissions of CO, increased and decreased CO2 and increased AFR values.]]>
<![CDATA[Karakteristik Briket Pelepah Kelapa Sawit Menggunakan Metode Pirolisis Dengan Perekat Tepung Tapioka ]]>
<![CDATA[Dani Saputra]]>;
<![CDATA[Ahdiat Leksi Siregar]]>;
<![CDATA[Istianto Budhi Rahardja]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.1973
<![CDATA[The energy crisis in Indonesia is marked by the increasing scarcity of fuel oil in the midst of society. One of the alternative energy sources is charcoal briquettes, where the ingredients are derived from solid waste from palm fronds. This study aims to determine the characteristics of oil palm midrib briquettes with 50% tapioca flour adhesive. The palm fronds were chopped to a size of ± 5 cm and then put into the pyrolysis chamber. Oil palm fronds were burned with a little oxygen at a temperature of 200-300⁰C for 3 hours. The result of pyrolysis combustion from oil palm fronds in the form of charcoal, then ground and filtered with a mesh of 60. The charcoal is glued with tapioca flour in a ratio of 2:1. Briquette testing is carried out at the Briquette Testing Laboratory provider to determine the parameters of combustion time, calorific value, moisture content, ash content, and carbon content that occur. From the test results, the following parameters are obtained: the average burning time is 1 minute/gr, the calorific value is 5.361kcal/kg wet basis and 5.863 kcal/kg dry basis, the water content is 8.56%, the ash content is 6.84 % wet basis and 7.48% dry basis, volatile matter is 36.96% wet basis and 40.42% dry basis and fixed carbon 47.64% wet basis and 52.10% dry basis.]]>
<![CDATA[Perancangan Permanent Magnet Synchronous Generator Sultan Wind Turbine V-5 ]]>
<![CDATA[Muhammad Irfan]]>;
<![CDATA[Erwin Erwin]]>;
<![CDATA[Slamet Wiyono]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.2055
<![CDATA[Wind is an inexhaustible source of energy so that the use of wind energy change systems will have a positive impact on the environment. Sultan Wind Turbine is a vertical axis wind turbine called the Vertical Axis Wind Turbine (VAWT). Synchronous generator is a machine that converts mechanical energy into electrical energy. Permanent magnet synchronous generator (PMSG) is a generator that uses permanent magnets to generate an air gap field instead of using an electromagnet. The purpose of this study is to design a 100 W PMSG generator for Sultan Wind Turbine using the MagNet infolytica software, then the results of looking for simulations at various speeds and various loads, after that to determine the value of the output power and efficiency at each loading and RPM. The design of this generator is the first design that is adapted to previous research where this design will optimize the simulation of previous designs that were applied to the Sultan Wind Turbine v-5. A method for designing a permanent magnet synchronous generator simulation of the sultan wind turbine which will be tested in developing its performance using the J.R. Handershot. In this design using MagNet Infolytica software to find the values of Voltage and Current along with Torque obtained from simulations with the finite element method, then data processing is carried out in Excel to find the value of output power and efficiency. The results obtained in this study are by changing the geometric shape. able to produce with a rotating speed of about 100 rpm to 150 rpm at a load of 5 ohms, namely 125, 86 Watt to 231.59 Watt. The average DC voltage is 33.5 volts, the average DC current is 6.65 Ampere, the torque is 23. 24 Nm, the input power is 365.14 Watts, the output power is 231.59 Watts and the efficiency ranges from 58% to 79%.]]>
<![CDATA[Analisis Perbandingan Sistem Kinerja Motor Penggerak Pada Mobil Listrik Kapasitas 75 kWh ]]>
<![CDATA[Indriawan Viantama]]>;
<![CDATA[Budhi Muliawan Suyitno]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.2083
<![CDATA[Population growth and the increasingly rapid industrial technology to 4.0. So that there was an electric car with an electric motor as the driving force. At first, electric cars used a DC motor system. But the triumph of this DC motor is not long in coming because problems arise when compared to induction motors such as complicated maintenance, much higher prices, and heavier weight than induction motors. In an induction motor, the control is believed to be easier than a DC motor. The induction motor is believed to make it possible to drive an electric car. The advantage of using this induction motor is that it has durability, reliability, if exposed to interference, it remains strong, easy to maintain, and the ability to operate in extreme environments. These advantages can replace the use of DC motors. Where the induction motor receives power from a rechargeable battery, so that the analysis of data from an induction motor for an electric car with the calculation of the electric motor rotation is 1,500 rpm, the motor power itself is 375 kW, the maximum and minimum torque generated is 582 Nm and 271 , 2 Nm, with a battery life of 189.3 hours. The resulting acceleration to reach speeds of 0-100 km / h only takes 5 seconds.]]>
<![CDATA[Analisis Pengaruh Turbine Washing Terhadap Efisiensi dan Daya Pembangkit Turbin Uap ]]>
<![CDATA[Sagita Firza Nur]]>;
<![CDATA[I Gede Eka Lesmana]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.2094
<![CDATA[The steam turbine is one of the main components in the Geothermal Power Plant which acts as the prime mover is used to convert heat energy in steam into rotation energy. At PLTP X, steam is used to drive the turbine is in saturation conditions. The principle of the steam turbine is dry steam plant cycle. From July to August, it was known that there have been several decreases in generating power at Unit 2 at PLTP X. The efforts that can be done to overcome this problem is by turbine washing. This study aims to compare the performance of steam turbines based on thermal efficiency, isentropic efficiency and steam turbine generator power before and after turbine washing from the calculation results based on CEI/IEC 953-1, CEI/IEC 60953-3 and ASME PTC 6-2004 standards using the actual steam system operating parameter data collection, interviews and analysis. So that it gets an average increase in isentropic efficiency of 0,0564 %, thermal efficiency of 0,0082 %, the actual power generation of steam turbine is 162,72 kW and the largest power generation reaches 54.500 kW after the turbine washing steam rate of 7,5963 kg/kWh and the turbine heat rate of 3.607,3453 kJ/kWh.]]>
<![CDATA[Analisis Keretakan pada Sambungan Las antara Pipa ASTM A106 dengan Globe Valve ]]>
<![CDATA[Amri Abdulah]]>;
<![CDATA[Apang Djafar Shieddique]]>;
<![CDATA[Jatira Jatira]]>;
<![CDATA[Dede Ardi Rajab]]>;
<![CDATA[Sukarman Sukarman]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.2150
<![CDATA[Crack failure often occurs in piping installations, especially in the welding area which can be caused by excessive stress or corrosion of the material. In this case, the crack failure in the HAZ area will be discussed near the pipe connected to the valve for the heat transfer fluid line. The method used in this paper is the inspection of the attached materials using OES (Optical emission spectroscope), observation of pipe and valve joints and failure analysis. From the results of material inspection, it was found that the pipe used was ASTM A106, then from the microstructure it was seen that the grain dimensions were not homogeneous, it would cause the strength of material heterogeneity, then from visual observation, it could be seen that pipe joints and valve misalignment occurred.]]>
<![CDATA[Analisis Ketahanan Material Epoxy Powder EF150AB pada Uji Thermal Shock untuk Komponen Charger Mobil Listrik ]]>
<![CDATA[Apang Djafar Shieddique]]>;
<![CDATA[Amri Abdulah]]>;
<![CDATA[Choerul Anwar]]>;
<![CDATA[Yoon Jung Rag]]>;
<![CDATA[Sohn Chang Kil]]>;
<![CDATA[Dodi Muhammad]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.2153
<![CDATA[Inside the electric car charger there is a controller where one of the components is the Disc Ceramic Capacitor (DCC) type SCF2E472M10 coated with epoxy powder EF150AB. The faster the charging, the higher the temperature, for that we need good performance on the capacitor layer. The method used in this study is to test the Pressure Cycle Temperature (PCT) with a temperature of 121 ° C, a pressure of 2 bar and a holding time of 48 hours and a Thermal Shock Test with a temperature parameter of -40 ° C to 125 ° C for each temperature change. 30 minutes for 100 hours, the number of test samples for each test is 20. From the test results, it was found that the average capacitance value on the PCT test was 4439.9 pF with a standard limit value of 3760 to 5640 pF, then the average value of Insulation resistance (IR) after the PCT test was 14183 Ω with the standard limit of the IR value of 10000 Ω. From these results it can be concluded that epoxy powder EF150AB is good for DCC coatings because the coating is resistant to low and high temperatures, which ranges from -40 ° C to 125 ° C.]]>
<![CDATA[Modifikasi Mesin Las Gesek Cakram ]]>
<![CDATA[Fendi Eka Setiawan]]>;
<![CDATA[Nafsan Upara]]>
<![CDATA[ Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pancasila ]]>
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DOI: 10.35814/asiimetrik.v3i2.2161
<![CDATA[The purpose of this research is to improve the performance of the disc friction welding machine that has been built and is operated, but there is a drawback, namely that there is no measuring device for process parameters such as rotational speed and forging load. In addition, during operation there is a vibration of 1.5 mm / s to 4.9 mm / s which is unacceptable according to ISO-2372 standards, so that these deficiencies can affect the quality of weld production. Repair or modification of this the friction welding machine is carried out by selecting and installing a rotating speed sensor (RPM) and load cell forging loads and installing rubber to dampen vibrations. Furthermore, the function test was carried out with the load, it was obtained that the rotational speed read on the LCD was 3.7% greater than the tachometer and the vibration decreased up to a value of 0.9 mm/s where this value was acceptable according to ISO-2372, while the performance test resulted in welding production for 3 workpieces with plate sheet material AA-110, ASTM A36 and CU-DHP copper with the same thickness, namely 1mm. From the results of the specimen tensile test of the three materials, it was found that the breakdown location was in the welding area where the tensile test value was around 1.2 to 5.1% of the tensile value of the workpiece material.]]>
