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Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi
Published by Universitas Pancasila
ISSN : 26551861     EISSN : 27162923     DOI : https://doi.org/10.35814
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering
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.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 411 Documents
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Desain dan Analisis Tanki ISO LNG Kapasitas 40 feet Menggunakan Teknik Finite Element Analysis Freddy Marpaung; Endarto Tri Wibowo; Rudias Harmadi
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.2989

Abstract

Development of liquified natural gas (LNG) ISO tank in Indonesia pays significant attention due to this product is still imported and it has high LNG market potential. In addition, this research is in line with national research priorities in the maritime sector to implement energy equality in Indonesia. As a first step in the research, the ISO tank model designed by using CATIA and structural testing using ANSYS software for finite element analysis. This simulation test is carried out to identify areas that receive high stress in the tank shell and the support structure of the tank. In addition, this virtual test was conducted to quantify the stress and safety factor of the ISO tank model. With this simulation, it is hoped that a more efficient and safer ISO tank design that meets existing regulatory standards can be obtained.
Rancang Bangun Alat Pengering Cabai Skala Laboratorium Dengan Pemanfaatan Concentrated Solar Power Dwi Rahmalina; Agri Suwandi; Diki Handika Edi; Reinnaldy Martonggo
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 1 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3028

Abstract

Increasing plantation productivity in Indonesia is currently increasing from year to year, one of the most needed plantation products in the community is red chili, post-harvest handling that is not paid attention to causes chilies to rot quickly. One of the post-harvest handlings of excessive chili so as not to decay is by drying. The tool design and manufacturing method used is the Pahl & Beitz design method and the manufacturing process used includes cutting, bending, perforating, joining and finishing stages. The results of the dryer design carried out are by developing a rack type dryer design or tray dryer, using three shelves as a place or container to dry chili using a radiator system and a fan as a heating device for the drying room. The results showed that the laboratory scale red chili dryer manufacturing process took 374 minutes with a total cost of Rp.4.715.400. As for the red chili drying process carried out for 360 minutes at a temperature of 60C with a weight of 500 grams per shelf, the average moisture content was 40% and the drying rate was 0.55 gram/minute.
Komparasi Simulasi CFD Pada Turbin Cross-Flow Dengan Model Turbulen k-ε STD dan RNG k-ε Juan Setiawan; Steven Darmawan; Harto Tanujaya
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3100

Abstract

The cross-flow turbine is one of widely used impulse turbine in power generator system due to it’s simple design and ability to be applied to a wide range of head and flow conditions. The flow in a cross-flow turbine flows in a crossed manner and works in 2 stages which could affect the turbine’s performance. Hence the visualization of these flow behavior could indicate the performance. Complexity of the flow inside the runner require the usage of CFD Method to visualize the flow, leaving the gap since numerical model also rely on turbulence model. The purpose of this study is to analyze the flow pattern in the nozzle and runner on a cross-flow turbine using the RNG k-ε turbulence model in ANSYS 2021 R2 Academic Version software. The simulation was carried out with 5 variations of nozzle inlet velocity: 2 m/s, 3 m/s, 4 m/s, 5 m/s and 6.487 m/s. The working fluid is assumed to be 1 phased water, with nozzle inlet pressure of 1.05 Pa, temperature of 24.85 oC and RNG k- ε turbulence model which compared to STD k-e turbulence model from the previous study. The results show that the simulation with the RNG k-ε turbulent models resulted in differences in the velocity and pressure profiles of Stage 1 of 3.353% and 87.679% and Stage 2 of 13.653% and 21.826% compared to simulation with k-ε STD models.
Analisis Aliran Udara dan Kenyamanan Termal di Laboratorium Perpindahan Panas dan Massa menggunakan Metode Computational Fluid Dynamics (CFD): Air circulation and Thermal Comfort Analysis of Heat & Mass Transfer Laboratory Using Computational Fluid Dynamics (CFD) Method Jason Prathana Liawan; Harto Tanujaya; Steven Darmawan
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.3122

Abstract

Air circulation and thermal comfort are some of many factors that affects user’s behavior in indoor activity, particularly in learning activity. With appropriate air quality and thermal comfort, it is easier for students to focus on the learning process. In addition, better air circulation can also benefit to the health of the people inside the building, for instance, according to WHO (World Health Organization), appropriate airflow may reduce the spread of SARS-CoV-2 which lately has caused a COVID-19 pandemic. However, air circulation and distribution have not a concern yet due to existing room condition and advanced technology that is needed, in L 609 classroom and Heat & Mass Transfer Laboratory, in this research. CFD method implementation for this case is used to show existing air circulation condition and necessary recommendations to get better air circulation. CFD simulation is done 3 dimensionally with 44344 nodes tetrahedral mesh on 2 configuration room condition, which are classified based on air input from AC, door gap, and with or without window opening. Based on CFD simulation results, the 2nd configuration with window opening indicate the best configuration with air velocity around 0,8 m/s dan room temperature 295,8 – 302,1 K. With window opening, the air flow condition met the ANSI/ASHRAE 55 and hoped to reduce COVID-19 spreading.
Analisis Serangan Vulnerabilities Terhadap Server Selama Work from Home saat Pandemi Covid-19 sebagai Prosedur Mitigasi Kotim Subandi; Victor Ilyas Sugara
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3127

Abstract

Since the COVID-19 Pandemic occurred, companies engaged in the retail sector have experienced a decline in the impact of government regulations such as PSBB (Large-Scale Social Restrictions) so that all activities were carried out from home or Work from Home (WFH). to assist companies or agencies with various types of information systems in carrying out their business activities and operations This server is one of the most important in the retail company. The opening of several accesses from the public network (internet) to the local area network (LAN) The security of a LAN network that is accessed from a public network is usually an administrator's problem. Often, the security problems of both the network and the entire application system, as well as the web server, are neglected just to ensure that operational activities run smoothly, and security is only realised after a disaster occurs. Without a good network security and application system, the application of any sophisticated technology will be very dangerous for the company, institution, or organisation itself. So, it takes a security analysis of all activities on the LAN, servers, and other devices to prevent mitigation and to be more aware of server security vulnerabilities. Based on the context of the existing issues, a penetration testing analysis is required. As supporting material, this research also uses guidelines from the CEH (Certified Ethical Hacker) module and the official Acunetix website. The test of this research is aimed at finding the weaknesses of the existing company/institution servers. Among others, quite a lot of weaknesses were found, where each of these weaknesses has a different handling, ports that should be blocked but are opened freely, and access to public IPs that are less important should be closed. The solutions proposed to overcome these problems include: the use of this Acunetix standard can be maintained and continued; testing is much better if carried out more than two times; periodically upgrading SNMP (Simple Network Management Protocol) vulnerable; increasing the level of server security; migration of quality antivirus; and upgrade of expired operating systems.
Cover and Preface Vol. 4 No. 1, January 2022 Editor
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 1 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Karakteristik Kekerasan Lasan Titik Gesekan dan Pengadukan pada Paduan Aluminium 5052-H112 Armansyah; Juri Saedon; Ferdyanto; Nely Toding Bunga; James Julian
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3183

Abstract

Issues in friction stir spot welding focus mainly on the mechanical characteristic affected by its Hardness. This Hardness must be maintained by evenly temperature distribution in weld zones during welding. The process parameters are mainly responsible for the development of the hardness of the friction stir spot weld. This study presented the hardness evaluations on the friction stir spot weld via the Hardness-Vickers test and analysis of the temperature distribution in the weld zones via the finite element method. The workpiece samples used in this study were Aluminium alloy 5052-H112 with a thickness of 2 millimeters in the lap-shear mode based on 3 main parameters at low and high levels of parameters configuration. The results obtained via the Hardness-Vickers tests exhibited a value of 42-HV located in the middle of the spot-weld center using a low-level parameters configuration. This value increased to 64-HV around the vicinity of the keyhole. And then the value decreased to 53-HV outside the keyhole, about 6 millimeters from the spot-weld center. Using high-level parameter configuration, the Hardness-Vickers value increased to 61-HV in the middle of the spot-weld center. The value then increased to 76-HV in the vicinity of the keyhole. Furthermore, the value decreased at 60-HV outside the keyhole, which ca 6 millimeters away from the spot-weld center. The temperature distribution of the weld zones achieved 480 oC in the vicinity of the keyhole using the low-level parameter configuration. Slowly, the temperature declined to 380 oC at 6 mm away from the friction spot-weld center in the HAZ. Using the high-level parameters configuration, the temperature distribution reached 540 oC in SZ, and slowly reduced to 425 oC in HAZ. Based on the results, it was found that by using high-level parameters configuration the hardness of the friction stirs spot weld exhibited better Hardness-Vickers value and evenly temperature distribution in the weld zones.
Perancangan Prototipe Pembangkit Listrik Tenaga Gelombang Sungai Menggunakan Gerak Translasi Magnet Permanen Sri Agustina; Antonius Hamdadi; Dwirina Yuniarti; Daniel Trivaldo Simatupang; Akbar Dwi Fortuna; Herlina Wahab
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3349

Abstract

Fossil energy sources are becoming increasingly expensive and will be unable to meet future energy demands. To address the scarcity of fossil fuels, many researchers are turning their attention to renewable energy sources. These sources of energy include wind, solar, geothermal, ocean waves, and others. The area around South Sumatra is rich in rivers, so this study utilizes the waves of the Musi River as the driving force for the River Wave Power Plant (PLTGS). The mechanism of this PLTGS is a permanent magnet generator designed to utilize the waves of the Musi River as the driving input of the generator. The river waves will move the float above, which has been arranged vertically with several permanent magnets, which will cut the magnetic field from the stator coil. The generator is designed to move translationally according to wave motion. The movement of the magnet also occurs from the impulse of the water wave, which causes the magnet to approach the stator coil and produce an induced electromotive force on the generator. Six generators are used, with each generator containing four Neodymium magnets and 1500 coils. The respective induced voltages are stored temporarily in the capacitors of the generator. The entire generator is connected in series. From the calculation results, the calculation results of the induced emf multiplied by the coil and the number of turns is 18.17 volts. Meanwhile, from the direct measurement results, the average voltage that can be generated is 10.9 volts. There is a voltage difference of 7.24 volts between theoretical calculations and direct measurements. This difference is caused by losses in the tool, such as friction, air gaps, and cable length. A permanent magnet generator that moves with the waves of the river can be used to make electricity, according to the results of this study
Implementasi Manajemen Bandwidth Load Balancing Equal Cost Multi-Path Bagus Hidayat; Ari Wibowo
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3369

Abstract

The internet network often experiences disturbances due to the large amount of bandwidth usage because it is not regulated properly. This paper details the deployment of multi-path equal cost load balancing bandwidth management to integrate two Internet service providers. The Network Development Life Cycle (NDLC) approach is employed in this study. Analysis, design, simulation prototype, implementation, monitoring, and management are all part of the process. Combining two ISPs, according to the findings of this study, is intended to maximise internet consumption from both ISPs. The ability of one ISP to share traffic equitably is merely one consideration when it comes to load balancing.
Studi Eksperimental Sekam Padi sebagai Zat Campuran pada Komposit Termoplastik untuk Meningkatkan Sifat Isolator Yulian Hanif; Agus Riyanto
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3382

Abstract

Every year, Indonesia produces a large amount of rice husks. Insulating composites can benefit from the use of rice husks because of their high silica content and low thermal conductivity. The resin composite specimen with fibre and rice husk reinforcing agents is tested for heat insulating properties by insulating the specimen plate. The composite with fibre reinforcement and rice husk ash had the lowest thermal conductivity value of 0.3770 W/m2K, according to the results of the test. To put it another way, ash made from rice husks contains more silica than the husks themselves or the husks that have been milled.

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