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Mohammad Adam Jerusalem
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jeatech@uny.ac.id
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INDONESIA
Journal of Engineering and Applied Technology
Published by Universitas Negeri Yogyakarta
ISSN : 27162257     EISSN : 27162265     DOI : https://doi.org/10.21831/jeatech
Core Subject : Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Mechanical Engineering
Journal of Engineering and Applied Technology (JEATech) is an open-access double-blind peer-reviewed journal of Engineering, Technology, and Applied Technology. Authors are invited to disseminate theoretical and practice-oriented topics relevant to: Electrical Engineering Electronic Engineering Informatics engineering Computer Science Mechatronics Engineering Mechanical Engineering Automotive Engineering Civil Engineering Industrial Engineering Applied technology related to the previous fields of engineering
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "Vol. 6 No. 01 (2025): (March)" : 4 Documents clear
Effect of Volume Fraction and Matrix of Forged Fibreglass Composite on Wear Rate for Brake Pad Application Wihardias, Angga Faisal; Fakhruddin, Muhammad; Muzaki, Mochamad; Pramita Sari, Nurlia
Journal of Engineering and Applied Technology Vol. 6 No. 01 (2025): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i01.76251

Abstract

Brake pads are one of the components of motorised vehicles that play an important role in slowing down or stopping the vehicle. This study aims to determine the effect of using variations in volume fraction and type of resin/matrix used on the wear rate that occurs, and the temperature generated during braking by utilising glass fibre as reinforcement. The research method uses experiments where the manufacture of brake pads composites was carried out by mixing all the ingredients then poured in a mold with a curing time of 1 day and the next process was testing using a disc brake system braking simulator and a thermal imaging camera with a variation in the percentage of glass fiber 45%, 55%, 65%, 75% and the type of resin used was epoxy resin and polyester. The results of this study indicate the effect of the type of resin/matrix used on the value of the wear rate that occurs. The test results show that the smallest wear rate is owned by specimen code D of 0.000000081 g/mm2.second with epoxy as the type of resin used. Then the largest wear rate is owned by specimen A1 of 0.000000154 g/mm2.second with polyester as the type of resin. It can be concluded that the higher the density of the polymer material, the lower the wear rate. It is expected that the composite brake pads have improved physical and mechanical properties that are better than the original brake pads.
Analysis of Pipe Diameter Variation and Lamp Load on Centrifugal Pump Performance as a Generator Driving Turbine Musabbikhah, Musabbikhah; Dyaksa, Ryan Dhana
Journal of Engineering and Applied Technology Vol. 6 No. 01 (2025): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i01.77745

Abstract

As the population grows, the demand for energy increases, especially from non-renewable resources. Many countries are turning to renewable energy sources such as water to meet this demand. Water from a certain height can drive a turbine generator by converting potential energy into mechanical energy in the form of shaft rotation, which is transmitted to the generator and then converted into electrical energy. This study aims to analyse variations in pipe diameter and lamp load on the performance of a centrifugal pump as a turbine driving a generator. The research method was an experiment in which the pipe diameter was varied as 1/2, ¾, 1, and 1.5 inches, and the lamp load was varied as 5, 10, 15, and 20 W. Pump performance includes specific speed, rotor power, and shaft power. The results of this study show that the performance of the centrifugal pump as a driving turbine, the highest is at a pipe diameter of 1.5 inches, which produces a specific speed of 207.59 rpm at a power load of 5 W, rotor power of 2002 watts at a load of 20 W, and shaft power of 9509.50 watts at a load of 20 W. By regression analysis, the highest specific speed was obtained by the formula y=223.16-2.9063x with a correlation coefficient of r=0.989. The rotor power formula was y=57.093+98.045x with a correlation coefficient of r=0.999, while the resulting shaft power formula was y=271.19+465.72x with a correlation coefficient of r=0.999. Thus, a strong positive relationship exists between diameter and lamp load on specific speed, rotor power, and shaft power to generate electrical energy sources in turbine axle pumps.
Enhancing Measuring Reliability: Calibration and Validation of IoT-based DC Power Logger Arifa, Aulia; Suharno, Suharno; Kamaruddin, Maqbul; Harjunowibowo, Dewanto
Journal of Engineering and Applied Technology Vol. 6 No. 01 (2025): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i01.83282

Abstract

A power logger is a device that has an electrical energy consumption monitoring function with an embedded data storage system to understand energy consumption patterns and improve the efficiency of energy usage. However, building meters without calibration causes inaccurate measurements and information. Therefore, the study reports a simple method to enhance any system's measurement quality via an Internet of Things (IoT)-based DC Power Logger case.  The IoT system built in the Blynk application enables the power logger to operate remotely and was integrated into a Google spreadsheet page to facilitate real-time data storage with an INA219 sensor as the measurement module. The calibration process of the power logger was conducted by comparing the measurement results obtained from the power logger with measurements obtained from a Sanwa multimeter. As a result, the calibration process ensures enhanced accuracy and precision of power logger measurements, which was validated by the validation process.
A Study on Health, Safety, Environment, and Ergonomics (HSEE) in Solar Power Plant Shafira, Dinda Aulia Ilma; Abadi, Imam
Journal of Engineering and Applied Technology Vol. 6 No. 01 (2025): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i01.84689

Abstract

Solar energy has rapidly developed as a renewable energy source, but the aspects of Health, Safety, Environment, and Ergonomics (HSEE) in their operations have remained a concern. This study analysed the risks faced by workers and the environment at the Pantai Baru solar power plant using a risk analysis approach based on primary data from worker questionnaires and secondary data from literature reviews and field observations. The findings showed that the health aspect included heat stress such as prolonged under direct sunlight and exposure to toxic materials, these materials include heavy metals such as cadmium (Cd) and lead (Pb), which are commonly used in photovoltaic (PV) technology to enhance efficiency but are known to be carcinogenic and hazardous even at low doses. The safety aspect covered electrical hazards, fire hazards, and falling risks, all of which were exacerbated by suboptimal working conditions. From an environmental perspective, solar power plants caused ecosystem damage, required large land areas, and faced challenges in recycling solar panels and batteries. Ergonomic risks were also identified, but the questionnaire results indicated that musculoskeletal injuries were not a significant issue for solar power plant workers. This study concluded that most HSEE sub-variables were relevant to the risks associated with solar power plants, except for musculoskeletal injuries. Therefore, implementing risk mitigation strategies, improving workplace design, and enforcing stricter environmental policies were necessary to ensure safe, efficient, and sustainable solar power plant operations.

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