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International Journal of Recent Technology and Applied Science (IJORTAS)
Published by Lamintang Education & Training Centre
ISSN : 27212017     EISSN : 27217280     DOI : https://doi.org/10.36079/lamintang.ijortas
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
The aim of this journal is to publish high-quality articles dedicated to all aspects of the latest outstanding developments in the field of Technology and Applied Science.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 56 Documents
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Effect of Defect Geometry and Strain Rate on Mechanoelectrochemical Behavior of X100 Steel Pipelines Syah, Muhammad Zacky; Andoko, Andoko; Prasetya, Riduwan
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 1: March 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0701.787

Abstract

Corrosion and mechanical issues in high-strength X100 steel pipelines present major difficulties for the safety and dependability of energy transport systems. This research investigates the joint impacts of defect shape and strain rate on stress distribution as well as electrochemical behavior through COMSOL Multiphysics simulations. Findings show that defects with elevated aspect ratios generate intense stress gradients, resulting in focused plastic deformation and the onset of cracks. Additionally, higher strain rates worsen stress concentration and speed up anodic and cathodic reactions, amplifying hydrogen embrittlement and the deterioration of materials. As time passes, the redistribution of stress due to degradation leads to structural instability and increases the likelihood of failure. These results highlight the significance of combining mechanical and electrochemical analyses to gain a deeper insight into degradation mechanisms. This research offers important perspectives for enhancing defect surveillance, refining cathodic protection methods, and guaranteeing the enduring reliability of pipelines in dynamic and corrosive settings.
Technological and Economic Challenges of Green Hydrogen Production in Morocco for the European Market Mostafa, Bacaoui; Houssain, Marwan; Taleb, Jazouli
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 1: March 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0701.803

Abstract

This study explores Morocco’s potential as a green hydrogen producer, focusing on its capacity to serve the European market. As the world shifts to sustainable energy, Morocco, with its abundant renewable energy resources, particularly solar and wind, is positioned to play a significant role in green hydrogen production. The study aims to assess Morocco’s potential for large-scale hydrogen production, its economic and environmental benefits, implementation challenges, and export opportunities to Europe. A descriptive qualitative methodology was used, using a case study analysis of Morocco’s energy policies, infrastructure, and potential. Data were collected through document analysis and semi-structured interviews with energy experts and policymakers. The study findings reveal that Morocco’s strategic location, coupled with its renewable energy resources, make it an ideal candidate for green hydrogen production. However, technical challenges, such as inefficient electrolysis technology, and logistical issues associated with infrastructure development pose significant barriers. Despite these challenges, Morocco’s growing role in the global green hydrogen market presents substantial economic benefits, including job creation and emission reductions. Future research should address specific technological barriers, including storage and transportation solutions, and further explore financial models to support large-scale green hydrogen projects. In addition, future research should investigate the regulatory framework needed to position Morocco as a competitive player in the global hydrogen market.
Application of Nanofibers from Electrospinning in Development of Smart Textiles for Military Clothing Setianingsih, Anisa; Ulfitri, Khairunnisa
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 2: September 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0702.780

Abstract

This paper examines the application of nanofibers produced via electrospinning in the development of smart textiles for military clothing. Smart textiles represent a significant advancement, integrating functionality with comfort to enhance traditional military garments. This study explores the potential of smart textile technology to improve the efficiency and effectiveness of military operations through capabilities such as monitoring soldiers' physiological conditions, facilitating enhanced communication, and providing protection against environmental threats. A literature review methodology was employed to analyze existing research on smart textiles in the context of military applications. This review covers technological components, benefits, challenges, and the potential of nanofibers in military clothing. The results highlight the capacity of electrospun nanofibers to improve the protective, communicative, and adaptive properties of military wear, with a focus on materials like carbon nanotubes and graphene and their applications in enhancing tensile strength, conductivity, and UV protection. This paper contributes to a deeper understanding of smart textile technology and its potential to advance the defense industry and improve the quality of protective equipment for soldiers.
Techno-Economic Analysis of On-Grid Rooftop PV Systems Integrated with BESS for Meeting the Energy Needs of Residential EV Home Charging Customers in Jakarta Eka Putri, Sonia; Yuwono, Akhmad Herman; Setiawan, Eko Adhi
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 2: September 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0702.851

Abstract

The growing adoption of electric vehicles (EVs) in Indonesia, especially in urban areas like Jakarta, is expected to increase household electricity consumption. Rooftop solar photovoltaic (PV) systems integrated with battery energy storage systems (BESS) offer a promising solution to supply clean and self-sufficient energy. This study aims to assess the techno-economic feasibility of on-grid rooftop PV systems combined with BESS for residential EV home charging in Jakarta under various export compensation schemes and cost scenarios. Using the HOMER Grid software, three system configurations were simulated: grid-only, PV + BESS without export, and PV + BESS with 65% export compensation. The optimal setup consists of an 8.97 kW PV and 5 kWh BESS, yielding an internal rate of return (IRR) of 18%, a levelized cost of energy (LCOE) of $0.042/kWh, and a payback period of 5 years. Sensitivity analysis highlights that a minimum export compensation of 40% and projected cost reductions, especially in BESS are critical for long-term viability. A larger system with 15 kWh BESS becomes economically feasible after 2028, achieving a 16% IRR. Integrating rooftop PV and BESS could reduce CO₂ emissions by up to 9,932 kg/year compared to a grid-only system. Policy recommendations include export compensation of at least 40%, targeted investment incentives, and co-investment models involving PLN, PV providers, and EV dealers.
Thermal Modeling of Blade Lithium Iron Phosphate Battery with Liquid Cooling and Addition of Manganese to Cathode Widyasari, Nurul; Priyono, Bambang
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 2: September 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0702.866

Abstract

Electric vehicles are a key alternative to fossil fuel-based transportation but face challenges in safety and driving range. Blade battery technology, with its long and flat shape, offers improved heat distribution and safety. This study focuses on the thermal performance of a blade-shaped Lithium Iron Phosphate (LFP) battery enhanced with manganese (LMFP), using a water-based cooling system to ensure temperature stability during operation. Effective thermal management, including the use of cooling systems, is crucial for maintaining battery performance and reliability. This study modeled a blade-shaped battery with a water-cooling system using ANSYS Fluent. The process involves designing 3D geometry and meshing to simulate thermal behavior accurately. The simulation was conducted under varying operating conditions by applying different inlet temperatures for the cooling system (14.85°C, 26.85°C, and 34.85°C ) combined with different discharge rates (0.5C, 1C, 2C, and 5C). These parameter variations were designed to evaluate the thermal response of the battery under realistic and dynamic working environments. The results indicate that the cooling system can maintain the battery temperature within the optimal thermal range, with the maximum temperature remaining below 35°C across all tested conditions. Higher C-rates resulted in increased internal heat generation, leading to higher cell temperatures. This study contributes to the development of thermally stable, higher-energy-density batteries, offering practical insights for designing safer and more efficient battery packs in electric vehicles.
Emergency mode of control of rubber belt conveyors via PLC system Arduino Opta Dzharov, Volodya Vladimirov
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 2: September 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0702.914

Abstract

The purpose of this article is to investigate emergency modes in conveyor belt technology, focusing on improving protections and interlocks for greater reliability when controlled by the Arduino Opta controller. The operation of a simulation model of a rubber conveyor belt using a programmable logic controller and relay-contactor groups is presented. An experimental study of the operation of a physical model of a rubber belt conveyor was carried out using installed sensors to obtain information about the condition of the facility in real time. This was done simultaneously with the optimization of the parameters of the automation model, after which the analysis and synthesis of the Ladder program for command and control was used. The visualization, based on a programmable logic controller "Arduino Opta" and sensors for obtaining process data are of different types to cover all the key elements of the rubber belt conveyor. The article highlights the characteristics, performance, requirements and operational procedure of the belt conveyor control systems, considering emergency situations such as slippage, breakage and overload. The lab bench is built to allow for the upgrade and renewal of the control system thanks to the open structure of the controller. The practical implications of this work are that based on this template, additional implementations may present an opportunity for the development of applications such as conveyor belts in the mining industry and logistics of transporting various goods and materials.

Page 6 of 6 | Total Record : 56

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