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Recent in Engineering Science and Technology
Published by PT Mencerdaskan Bangsa Indonesia
ISSN : 29858321     EISSN : 2985704X     DOI : https://doi.org/10.59511/riestech
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Aims and Scope Recent in Engineering Science and Technology, a peer reviewed quarterly engineering journal, publishes theoretical and experimental high quality papers to promote engineering and technologys theory and practice. 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 recent engineering science and technology. RiESTech covers topics contributing to a better understanding of engineering, material science, computer science, environmental science, and their applications. RiESTech is concerned with scientific research on mechanical and civil engineering, Electrical or Electronics and Computer Engineering, and Metallurgical and Materials Engineering with specific analytical techniques and or computational methods. The scope of RiESTech includes a wide spectrum of subjects namely, industrial and manufacturing engineering, mechanical engineering, material science and nanotechnology, chemical engineering, and bioengineering, electrical and electronic engineering.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 84 Documents
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Pengembangan Penyapu Magnet Otomatis Menggunakan Sistem IoT Susanto, Iwan; Tsai , Chi-Yu; Nurzal , Nurzal; Purnomo, M Zalu; Yu, Ing-Song
Recent in Engineering Science and Technology Vol. 2 No. 01 (2024): RiESTech Volume 02 No. 01 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i01.44

Abstract

This study presents a comprehensive analysis of the epitaxial growth and surface characteristics of GaN films on 2D MoS2/c-sapphire substrates. Reflection High Energy Electron Diffraction (RHEED) patterns demonstrate the evolution of the substrate and GaN film surfaces during growth. The subsequent growth of GaN films results in the emergence of hexagonal spots, indicative of a single crystal structure. The brightness intensifies with longer growth times, confirming the improvement in GaN crystalline quality. Atomic Force Microscopy (AFM) images provide further insights into the surface texture. The 2D MoS2/c-sapphire substrate exhibits a textured surface, while GaN films display similar features with bright colors corresponding to GaN clusters. The Root Mean Square (RMS) surface roughness values of GaN films have a higher roughness compared to the substrate. Scanning Electron Microscopy (SEM) confirms the uniform coverage of GaN films, revealing smooth growth and organized hexagonal structures. These findings collectively demonstrate the successful epitaxial growth of GaN films on 2D MoS2/c-sapphire substrates, providing valuable insights into their surface morphology and crystalline structure.
Filter Cleaning System Modification to Improve Dust Colletor Rahman, Haolia; Alfi Hidayat Hutasuhut; Sugeng Mulyono
Recent in Engineering Science and Technology Vol. 2 No. 01 (2024): RiESTech Volume 02 No. 01 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i01.45

Abstract

The filter cleaning system is part of the dust collector which functions as a filter between dirty air and clean air. Blockage of the dust collector is due to a lack of maintenance to control the performance of filter cleaning components such as valves, jetspray tubes and bagcloth. Another cause is the less than optimal air pressure from the jetspray to dislodge the dust adhering to the bagcloth. So it is necessary to recondition both the layout of the filter cleaning components and the optimization of jet spray pressure. Determination of the capacity of the jetspray tube is adjusted to the specifications of the compressor and uses the ASME VIII Div I (Pressure Vessel) standard with dimensions of 1400mm x 8inch SCH20. The feasibility test of the jetspray tube is carried out by calculating the allowable thickness and the factor of safety based on the pressure operated on the jetspray tube. Determining the location of the filter cleaning components is based on aspects that make it easier for the operator to carry out the maintenance so that the performance of the filter cleaning components can be controlled properly. Based on the stress simulation using solidworks 2020 for the SCH20 pipe which has a thickness of 6.35mm operated with a pressure of 7 bar it is categorized as safe to use.
ISODUS Application Design for Web-Based School Academic Administration Operational System Information. Case Study: Al Alaq Islamic Middle School Jalaludin; Amirudin; Ali, Achmad Faruq; Rosyida, Susy
Recent in Engineering Science and Technology Vol. 2 No. 01 (2024): RiESTech Volume 02 No. 01 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i01.46

Abstract

The aim of the research is to support technological independence in educational units in processing data archives and general finances at the Al Alaq Islamic Middle School and what are the obstacles encountered in implementing such a system. In addition, the authors hope that readers can understand the use of this academic administration information system application known as ISODUS. During the research, the authors found that the Al Alaq Islamic Middle School did not have a computerized academic administrative and financial data processing system so that it could help find information quickly and effectively. This is due to the lack of human resources who know about information systems. After conducting some research, the authors conclude that Al Alaq Islamic Middle School requires a computerized system so that it can assist teachers in making administration. The author tries to create an Academic Administration system using the PHP programming language.
IoT-based Intelligent Monitoring & Control System Planning Using Project Management Method and Business Feasibility Analysis Prasetya, Sonki; Rahman, Muhammad Farid Aditya; Ridlwan, Hasvienda M
Recent in Engineering Science and Technology Vol. 2 No. 02 (2024): RiESTech Volume 02 No. 02 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i02.47

Abstract

Various PLTS systems have been installed in the Energy Laboratory of Politeknik Negeri Jakarta, ranging from on grid, off grid, and SHS systems, and various sources of PLTH, PLN, and Generator Set (Genset.) However, the problem that occurs there is that the hybrid system in the Lab. Solar System PNJ room cannot be monitored easily and controlled automatically. As a result of these problems, monitoring the performance of hybrid systems and learning in the PNJ Solar Systems Lab cannot be done optimally. The power source in the lab can be combined in a Hybrid PLTS system and generator with a switch method using the ATS switch control system and monitoring for student learning. The purpose of this research will be to analyze the economic value and use of ATS switches for various concepts in saving electricity in a certain period of time using project management analysis so that it can see the feasibility of this project to be implemented or not. The method in this study is to calculate the economic feasibility value, then find the value of Internal Rate of Return (IRR), NPV, Payback Period using Microsoft excel software and analyze project risks. The results obtained in this project are the IRR value> Interest rate, namely 6.51%> 5.75%. The NPV value obtained is Rp. Rp.572,252 with a payback period in year 12. From the results obtained, this project is declared feasible to continue.
Front Cover Vol 04 No 01 2024
Recent in Engineering Science and Technology Vol. 2 No. 01 (2024): RiESTech Volume 02 No. 01 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i01.48

Abstract

Table of Content Vol 02 No 01 2024
Recent in Engineering Science and Technology Vol. 2 No. 01 (2024): RiESTech Volume 02 No. 01 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i01.49

Abstract

Hydro-Catalytic Cracking of Biomass Tar Contamination in Syngas Warsita, Aris; Kuntara, Hasta; Abidin, Zainal
Recent in Engineering Science and Technology Vol. 2 No. 02 (2024): RiESTech Volume 02 No. 02 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i02.51

Abstract

This paper describes new tar removal argumentation method by adding water that enhances the steam reformation reactions and converts tar contamination in the gas into combustible gases. The hydro-catalytic tar removal method was experimentally evaluated in a microwave-heated reactor with toluene and naphthalene as tar models. The reactor was tested in a wide temperature range with flow residence time through the reactor in the range of 0.12-0.24s. Dolomite and nickel catalysts were tested at 700-900°С while Y-zeolite, ruthenium, and rhodium were tested at 500-700°С temperature ranges. Steam-to-carbon ratio (S/C) was tested in the range of 0.11-0.55. Tar removal efficiency of 98.88% was achieved with ruthenium catalyst at 700 °С cracking temperature and S/C ratio range of 0.32-0.33. The gas product from tar cracking was analysed using gas chromatography and it consisted mostly of H2, CH4 and some higher hydrocarbon gases.
Stability Analysis of Feed Gas Based on Pressure using Gas Chromatography at PT Badak NGL Muhammad Prasha Risfi Silitonga; Feby Valentina; Reza Azhari
Recent in Engineering Science and Technology Vol. 2 No. 02 (2024): RiESTech Volume 02 No. 02 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i02.52

Abstract

As one of the LNG processing companies in Indonesia, Badak NGL plays an important role in product QA and QC. Laboratory and Environment Control PT Badak NGL obtained ISO 17025 as a testing and calibration laboratory. In clause 7.7 of ISO 17025, stated that each laboratory is required to improve competence, one of which is by holding interlaboratory meetings. Currently, PT Badak NGL is participating in the implementation of the Inter Laboratory Meeting (ILM) in East Kalimantan. In the implementation of the ILM 112th and 113th in 2022, several laboratories provide outlier results in natural gas sample testing. Various factors affect the results of natural gas sample testing, one of them is the sample pressure. This research aims to determine the minimum pressure limit in testing feed gas samples. The test is carried out by designing a series of two cylinders to test the repeatability value. The sampling process is based on GPA 2166 and the measurement of repeatability values is based on GPA 2261. This method is effective for determining the limit of repeatability values as a reference for the minimum sample pressure before being injected into Gas Chromatography.
Study on Engine Learning Experiencing Low Power On Cummins QSL 9.3L Engine Agsya, Raihan Trinanda; Filzi, Rahman; Noval, Rahmat; Yue, Hong
Recent in Engineering Science and Technology Vol. 2 No. 02 (2024): RiESTech Volume 02 No. 02 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i02.55

Abstract

The Cummins QSL 9.3L diesel engine is a production engine from CLG or Cummins Liugong. This type of engine is typically used in heavy equipment such as Wheel Loaders. A diesel engine is an internal combustion engine where the combustion process occurs inside the engine itself, and pure air is compressed within the combustion chamber, resulting in high air pressure. It operates in four strokes. This engine experienced low power, causing it to malfunction, which led to abnormal operation. Various checks were conducted, including inspection of diesel fuel, fuel tank inspection, engine oil level check, visual inspection of the air cleaner, water separator check, Fuel Feed Pump check, and Clearance Valve Lash check. The problem identified was the mismatch of Valve Lash clearance in the engine, resulting in low power. The repair step involved adjusting the Valve lash using a Feeler Gauge. The purpose of this research is to provide an explanation of troubleshooting and to perform repairs on engines experiencing low power
An Analysis of the Effect of Feeder Volume on Shrinkage Porosity Defects in Piston Products through the Gravity Die Casting Process Banowati, Nabila; Noviaty, Veronika; Fernanda Alvi Yasin , Muhammad; Mulyono, Sugeng; Rahmiati, Tia; Wahyudi, Wandi; Rizkia, Vika
Recent in Engineering Science and Technology Vol. 2 No. 02 (2024): RiESTech Volume 02 No. 02 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i02.56

Abstract

To achieve defect-free casting (soundness casting) with a minimal amount of shrinkage porosity, refinement during the casting process is necessary. In the gravity die casting process, there are parameters that lead to product defects, especially in the casting design, focusing on the gating system and feeder system as pathways for the flow of molten metal to supply the molten metal into the mold cavity. This research was conducted to examine the effect of adding feeder dimensions on shrinkage porosity, specifically on Al-Si piston products with a Silicon content of 12-13%. Feeder dimensions were varied in nine variations by adding height and width to the feeder gate, initially measuring 90mm in height and 32mm in width, along with the addition of insulation to the feeder to retain the heat of the casting process. Cooling used water and argon, with water placed at the center core and pin core and argon placed on the outer mold, with a solidification time of 150 seconds and pouring time of 3 seconds considered constant. This study used a Computer Aided Engineering (CAE) approach, namely MagmaSoft or the application of software to model the gravity casting system process. The results showed the lowest percentage of shrinkage at feeder dimensions of 114mm in height and 45mm in width with a mold temperature of 220°C was 0.76% of the product

Page 4 of 9 | Total Record : 84

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