cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Firman Yasa Utama
Contact Email
firmanutama@unesa.ac.id
Phone
+6281330677771
Journal Mail Official
subuhisnur@unesa.ac.id
Editorial Address
Fakultas Teknik Gedung E1 Kampus UNESA Ketintang Surabaya Universitas Negeri Surabaya
Location
Kota surabaya,
Jawa timur
INDONESIA
Indonesian Journal of Engineering and Technology (INAJET)
Published by Universitas Negeri Surabaya
ISSN : -     EISSN : 26232464     DOI : http://dx.doi.org/10.26740/inajet
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering
Indonesian Journal of Engineering and Technology (INAJET) is a scientific journal that publishes peer-reviewed research papers in the fields of Engineering and Technology, both theoretical, experimental, and application studies, including: Electrical Engineering, Mechanical Engineering, Informatics, Industrial Engineering, Civil Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 126 Documents
 9   10   11   12   13 
Design of A Single-Phase Pure Sine Wave Inverter Using Arduino as The Main Controller winata, yeriemiaputra; Suprianto, Bambang
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 1 (2024): September 2024
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n1.p19-26

Abstract

Solar Power Plants (PLTS) have gained popularity in many countries as a clean, cost-effective, and sustainable source of electricity for communities. However, these plants face challenges in converting the electrical current produced by solar panels from direct current (DC) to alternating current (AC), which is widely used by most electrical equipment. In this regard, the role of inverters is crucial. This study aims to design and construct a single-phase pure sine wave inverter using Arduino as the primary controller. The inverter produces a pure sinusoidal output signal with adjustable width using the modulation index and is equipped with a safety system to prevent short circuits between MOSFETs by setting dead time in the Pulse Width Modulation (PWM) signal. The designed inverter output can generate a sinusoidal signal of up to 100 Watts without significant distortion under various loads, with an output voltage of 220VAC ±0.25% and a frequency of 50Hz ±0.10%. While the inverter efficiency reaches 70% across various loads, there is potential to enhance efficiency by incorporating a feedback voltage system and adjusting the carrier frequency. This study has successfully designed and implemented a single-phase inverter that generates a pure sine wave using Arduino as the main controller.  Keyword: Inverter, Pure Sine Wave, Pulse Width Modulation, Arduino
Performance Evaluation of Softened Two-Bit Hard Combination Scheme for Cooperative Spectrum Sensing Abdulhamid, Mohanad
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 1 (2024): September 2024
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n1.p15-18

Abstract

Cooperative spectrum sensing is one of the main approaches to improve the efficiency of spectrum utilization in cognitive radio networks. This study aims to evaluate the performance of a softened hard two-bit combining scheme in cooperative spectrum sensing. This scheme combines the sensing information from multiple secondary users by utilizing a softened two-bit representation to improve the detection accuracy and reduce the error probability. The evaluation is carried out through simulations under various channel conditions, such as AWGN and Rayleigh fading channels, considering factors such as signal-to-noise ratio (SNR) and the number of secondary users. The results show that this scheme is able to significantly improve the detection probability (Pd) compared to the conventional hard combination method, especially under low SNR conditions. In addition, this scheme shows efficiency in reducing communication overhead, making it a promising solution for the implementation of reliable spectrum sensing in cognitive radio networks. This paper measures the performance of cooperative spectrum sensing, over Rayleigh fading channel and additive white Gaussian noise, based on softened two-bit hard combination scheme. Two measures based on energy detection are considered including effect of false alarm probability, and effect of number of users. Simulation results show that the detection probability increases with the increase of false alarm probability, number of users, and signal-to-noise-ratio.   Keyword: Softened two-bit hard combination scheme, Cooperative spectrum sensing, Cognitive radio
Assessing the Impact of Green Building Certifications on Construction Practices in Nigeria: A Systematic Review Unegbu, Hyginus; YAWAS, Danjuma S.
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 1 (2024): September 2024
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n1.p7-14

Abstract

This study analyzes the impact of green building certifications on construction practices in Nigeria, focusing on LEED, EDGE, and BREEAM. Using a systematic review of literature from 2015 to 2023, it evaluates certification adoption, changes in construction practices, and economic and environmental outcomes. Key findings show limited but growing certification adoption driven by international standards and local initiatives. Certified buildings in Nigeria exhibit improvements in energy efficiency, water conservation, and waste reduction, leading to enhanced sustainability and lower operational costs. However, barriers such as high initial costs, a shortage of skilled professionals, and insufficient government policies hinder progress. The study emphasizes the need for stronger governmental support, increased public awareness, and the development of local industries for sustainable materials. Future research should explore the long-term economic benefits of green buildings, barriers to adoption, and comparative studies with other developing nations. This research provides insights for policymakers, developers, and stakeholders to promote green building practices in Nigeria, aligning with global sustainability goals.
Traffic Sign Recognition Using Detector-Based Deep Learning Method Mulyono, Alfito; Ervin Yohannes
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 1 (2024): September 2024
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n1.p1-6

Abstract

Traffic is a key element in the transportation system. Traffic is an integral part of urban life and a key element in the transportation system. Traffic safety is a major concern to prevent accidents and ensure safe mobility. Traffic accidents are one of the most common occurrences. . But on the other hand, the increase in road accidents is increasing, which can be caused by people's lack of knowledge about traffic. The main solution to overcome this problem is to increase knowledge about traffic. The application of artificial intelligence, especially object detection methods with the use of detector-based deep learning methods, is one method that has proven efficient in detecting objects in real-time. In this research, object recognition is performed using SSD (Single Shot MultiBox Detector) where the model is trained and tested for its performance in detecting traffic signs in Indonesia. From the research results, the mAP 50 and mAP 50-95 values are 89.66% and 65.49%, respectively.  Keyword: Deep Learning, SSD, Traffic Signs.
Effect of Post-Welding Heat Treatment on ASTM A36 Steel on Tensile Strength Bachrun, M. Thabrani; Hafizh Ainur Rasyid, Akhmad
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 2 (2025): April 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n2.p36-41

Abstract

Riding comfort is greatly influenced by the strength and stability of the motorcycle, one of which is the Engine Arm component that connects the frame and the engine.One important factor is the swingarm, which is designed to withstand loads and torsional stiffness.This study aims to examine the effect of air, sand, and furnace cooling media on the SMAW welding of ASTM A36 steel on tensile strength and microstructure after Post Weld Heat Treatment at a temperature of 780°C with a holding time of 60 minutes.The research uses experimental methods with tensile testing to measure tensile strength and strain, as well as microstructural analysis to observe phase changes in the weld metal and Heat Affected Zone (HAZ).The tensile test results show that the air cooling medium produced the highest tensile strength (268.8 MPa) and an average elongation of 8.95%, while the sand medium produced the lowest tensile strength (265.77 MPa) with an elongation of 8.25%.Microstructural analysis revealed that in specimens with sand cooling media, the ferrite phase is dominant, providing toughness, whereas in air cooling media, there is a ferrite phase but with a slight presence of martensite phase structure, resulting in a structure that is soft yet somewhat hard.The research results show that faster cooling media increase tensile strength and alter the microstructure of ASTM A36 steel.
DESIGN OF WIND POWER PLANTS USING SAVONIUS-DARRIEUS TURBINES WITH MAGNETIC POLE GENERATORS Okvani, Ahmad; Firman Yasa Utama
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 2 (2025): April 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n2.p42-50

Abstract

The utilization of wind energy as a renewable energy source presents a strategic solution to address the limitations of fossil fuel resources and the growing demand for energy. This study aims to design and test a hybrid Savonius-Darrieus Wind Power Plant (WPP) prototype equipped with a variable magnetic pole generator to optimize the conversion of fluctuating wind energy into electrical energy. The research method employed is Research and Development (R&D), comprising stages of literature review, 2D and 3D design, prototype assembly, and functional testing conducted in the coastal area of Kenjeran Beach, Surabaya. The testing involved variations in the number of magnetic poles (2 and 4) and pulley ratios (2:1 and 3:1), using an anemometer and multimeter for measurement. The results of the study produced a complete design of the Savonius-Darrieus WPP prototype with a length of 100 cm, a width of 100 cm, and a height of 80 cm. The generator used is a permanent magnet generator based on an AC fan motor dynamo type YYW25-6-17004L, utilizing coin-type neodymium magnets with a diameter of 1 cm and a thickness of 0.6 cm.
Comparative Study of Structural Strength in the Selection of VU-EV Car Chassis Materials (Vokasi Unesa-Electrical Vehicle) Using Solidworks 2020 Software Muhamad Nahrudin Ibad, Ibad; Ferly Isnomo Abdi; Firman Yasa Utama; Ganda, Andita
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 2 (2025): April 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n2.p51-55

Abstract

The development of electric cars in recent years has changed very rapidly. The Vocational Faculty of Surabaya State University also wants to develop an electric car in the form of a golf car that is efficient and energy efficient. The chassis is one of the important parts of an electric car that functions as a support for the weight of the car. A simple and lightweight chassis design is one of the factors in saving energy, because the lighter the vehicle, the less power is used to move the vehicle. The selection of chassis materials is also very important because it affects the strength of the chassis and the weight of the chassis. Three materials are considered for making the chassis, namely; aluminum 6061-T6, AISI 4130 steel, and AISI 1020 steel. Structural strength testing uses a load pressure of 1500 N on the front of the chassis, 4000 N on the middle of the chassis, and 3000 N on the rear of the chassis. Structural analysis of the chassis using the FEA (Finite Element Analysis) method using Solidwork 2020 software. In the structural strength test, the stress and displacement values ​​of each material were known: aluminum 6061-T6 = 7.251 Mpa and 0.199 mm, AISI 4130 steel = 10.815 Mpa and 0.065, and AISI 1020 steel = 11.151 Mpa and 0.065 mm.
Design of a Ladder Frame Chassis Made from Aluminum Alloy Hollow Material Used by the GARNESA Energy-Efficient Car Team with Static Testing Baihaqi, Muhammad Baihaqi Nur; Firman Yasa Utama
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 2 (2025): April 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n2.p56-61

Abstract

This study focuses on designing a ladder frame chassis for energy-efficient cars made of Hollow Aluminum Alloy. The chassis functions as the main supporting structure that must be able to withstand vehicle loads effectively, including static loads from the steering, driver, engine, and battery, as well as dynamic loads that arise while driving. The design process involves an in-depth analysis of the dimensions and strength of the material to achieve a stable, minimalist, and aerodynamic design. Testing is carried out to evaluate the strength of the chassis through static test methods. The method used is an experimental method where the work on the tool starts from the design which includes: observation, tool design and function testing. The results of the chassis design have final dimensions of 1740.40 mm (length) x 780 mm (width) x 876.20 mm (height), while the results of static testing obtained the highest deflection results of 0.2 cm with a safety factor of 7.29 ul, for the moment of inertia obtained a value of 996730.62 mm4, and for von mises stress 37.77 Mpa. These findings indicate that the designed chassis meets the safety and performance criteria required for energy-efficient cars, so it can be implemented in KMHE and SEM competitions.  Keyword: Chassis Ladder Frame, Energy Efficient Car, Urban Concept, Static Test.  
Fault Analysis and Handling in Low-Voltage Networks at PT. PLN (Persero) UP3 Sidoarjo ULP Krian Ibrohim, Ibrohim; Muhammad Roihan Amir
Indonesian Journal of Engineering and Technology (INAJET) Vol. 7 No. 2 (2025): April 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v7n2.p62-69

Abstract

Low-voltage electricity distribution networks have an important role in ensuring a reliable electricity supply for the community because they are directly connected to customers. However, this network is prone to disturbances due to natural factors such as extreme weather and external disturbances such as fallen trees, wild animals, and human activities. This study aims to identify the types of disorders that commonly occur and evaluate the effectiveness of the handling procedures implemented by PT PLN (Persero) UP3 Sidoarjo ULP Krian. The method used is qualitative descriptive through direct observation in the field with the PLN technical team. The results of the study showed that the most dominant disturbances were caused by strong winds, heavy rain, and cable connection disruptions. Handling procedures start from identifying the location of the fault through customer reports, technical checks using measuring instruments such as ampere pliers and tespen, to corrective actions and evaluations. In addition, the aspect of occupational safety is also a major concern in each stage. Evaluation of the system is carried out post-repair to ensure there is no potential for further disruption. In conclusion, the reliability of the distribution network can be improved through systematic handling procedures, periodic maintenance, and active participation of the community. This study provides a practical overview of the importance of network disruption management as part of efforts to improve the quality of national electricity services.  Keywords: Power outage, Distribution network, System reliability, Technical handling
Analysis of Feeding, Drinking and Automatic Fecal Cleaning in Quail Cages Based on The Internet of Things Nur Rohman, Muhammad; Mahendra Sakti, Arya; Riandadari, Dyah; Nugroho, Aji
Indonesian Journal of Engineering and Technology (INAJET) Vol. 8 No. 1 (2025): September 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v8n1.p10-18

Abstract

Analyze the effect of the slope of the feeding valve on the consumption of quail feed to determine the optimal angle of inclination, evaluate the effect of the variation in the diameter of the timing pulley on the conveyor belt on the rotation speed and cleaning time of the cage manure to find the most effective pulley size, and study the effect of liquid viscosity on the filling time of the tank using a water pump in order to optimize the liquid filling system in the farm. An applied experimental method with a quantitative approach was used to test the influence of free variables. The data collected including feed consumption, fecal cleaning time, and drinking water filling time were analyzed numerically to obtain valid and objective results. The results showed that increasing the tilt of the feeding valve from 20°, 25°, to 30° increased feed consumption from an average of 348 grams to 725 grams. The timing diameter of the pulley has an effect on the rotational speed and cleaning time, with the small pulley (25 mm) resulting in the fastest cleaning (0.42 minutes) and the largest pulley (50 mm) the slowest (1.38). In addition, the viscosity of the liquid affects the filling time of the 10-liter tank, where ordinary water is the fastest (3.52 minutes), water with 5 vitamins is slightly longer, and the mixture of water with molasses and salt is the slowest (4.31 minutes). 

Page 12 of 13 | Total Record : 126

 9   10   11   12   13 

Filter by Year

2018 2026


Reset
Filter By Issues
All Issue Vol. 8 No. 2 (2026): April 2026 Vol. 8 No. 1 (2025): September 2025 Vol. 7 No. 2 (2025): April 2025 Vol. 7 No. 1 (2024): September 2024 Vol. 6 No. 2 (2024): April 2024 Vol. 6 No. 1 (2023): September 2023 Vol. 5 No. 2 (2023): April 2023 Vol. 5 No. 1 (2022): September 2022 Vol. 4 No. 2 (2022): April 2022 Vol. 4 No. 1 (2021): September 2021 Vol. 3 No. 2 (2021): April 2021 Vol 3, No 2 (2021): APRIL Vol. 3 No. 1 (2020): September 2020 Vol. 2 No. 2 (2020): April 2020 Vol 3, No 1 (2020): SEPTEMBER Vol 2, No 2 (2020): April Vol. 2 No. 1 (2019): September 2019 Vol. 1 No. 2 (2019): April 2019 Vol 2, No 1 (2019): September Vol 1, No 2 (2019): April Vol. 1 No. 1 (2018): September 2018 Vol 1, No 1 (2018): September More Issue