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Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Published by Asosiasi Riset Ilmu Teknik Indonesia
ISSN : 3031500X     EISSN : 3031349X     DOI : 10.61132
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering
open Industrial Engineering Science Cluster Research journal. This journal is a peer-reviewed and open research journal of the Engineering Science Clump
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 226 Documents
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Pengukuran Beban Kerja Mental pada Karyawan Quality Control di PT Delta Dunia Tekstil 1 dengan Menggunakan Metode Nasa-Tlx Aqsal Faiz Al Hayy; Anita Oktaviana Trisna Devi; Erna Indriastiningsih
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1082

Abstract

Work fatigue is a significant issue faced by employees in Indonesia, with approximately 65% experiencing symptoms that reduce their concentration and performance. Excessive workload, particularly mental workload, can result in cognitive strain and decreased productivity. This study aims to measure the level of mental workload experienced by quality control employees at PT Delta Dunia Tekstil I using the NASA Task Load Index (NASA-TLX) method. The research also investigates the relationship between employees’ age, length of service, and perceived mental workload through T-tests and F-tests to provide a more comprehensive analysis. Data were collected from 20 quality control employees who are responsible for monitoring textile production under strict standards. Results from NASA-TLX calculations indicate that the average mental workload falls within the high category, with effort and own performance emerging as the dominant dimensions contributing to mental strain. Correlation analysis shows a negative but not statistically significant relationship between age, length of service, and mental workload, suggesting that other factors play a stronger role in shaping employees’ perceptions. The study further highlights fluctuations in employee attendance and quality performance indicators, emphasizing the importance of workload evaluation. To address these issues, recommendations include adding more operators per machine, which is projected to reduce mental workload scores by approximately 33%. Such measures can optimize task distribution, improve efficiency, and promote employee well-being. Overall, the findings suggest that systematic workload assessments using tools such as NASA-TLX are essential for enhancing productivity and supporting sustainable human resource management in the textile industry.
Analisis Pemanfaatan Rainwater Harvesting untuk Pemenuhan Kebutuhan Air Non-domestik Muhammad Zahran Fakhri; Rizal Arif Setiawan; Henny Pratiwi Adi
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1088

Abstract

The increasing demand for clean water at the Faculty of Engineering, Sultan Agung Islamic University (UNISSULA) Semarang requires an alternative and sustainable water source. One effective solution is the implementation of a rainwater harvesting (RWH) system to meet non-domestic water needs such as toilet flushing, plant irrigation, and campus cleaning. This study aims to analyze the potential utilization of rainwater, design an appropriate RWH system, and evaluate its cost efficiency compared to the use of PDAM (regional water supply company) water. This research employed a quantitative approach by collecting primary data, including roof catchment area measurements and existing rainwater drainage conditions, as well as secondary data such as average rainfall, the number of campus users, and PDAM water tariffs. The analysis consisted of calculating the potential harvested rainwater volume, designing the RWH system, estimating installation costs, and comparing operational costs between RWH and PDAM water usage. The results indicate that the potential harvested rainwater volume from the building’s roof is approximately 7,054.5 liters/day, while the average non-domestic water demand is 3,170 liters/day, allowing water needs to be met during the rainy season. The implementation of the RWH system can also reduce water costs by up to 43,6%, equivalent to IDR 87.615.616 over a 20-year period. Therefore, the application of RWH is an effective and sustainable solution for water management within the campus while supporting operational cost efficiency.
Analisa Perbandingan Konduktor ACSR Hawk dan ACCC Amsterdam pada Rekonduktoring SUTET 500 kV di Suralaya-Cilegon Ujang Wiharja; Muhammad Faqih
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1093

Abstract

Transmission line reconductoring is one of the strategic solutions to increase the capacity and efficiency of the power system without the need to build new infrastructure. This study aims to analyze and compare the performance of two types of conductors, namely ACSR Hawk and ACCC Amsterdam, used in the Suralaya-Cilegon 500 kV SUTET transmission line. The comparison is carried out by considering technical aspects including power losses, ampacity, horizontal and vertical sag values, and overall energy efficiency. The research methodology involved a literature study, collection of conductor technical data, calculation of resistance, current, and power losses, and simulation of sag values against temperature variations. In addition, economic analysis and field implementation aspects were also considered to assess the feasibility of using each conductor. The results show that Amsterdam's ACCC conductor has superior technical performance compared to Hawk's ACSR. ACCC is capable of delivering currents up to ±1300 A, compared to ACSR Hawk which is only ±800 A. The power loss value using ACCC is recorded at ±1.34 MW, lower than ACSR Hawk at ±1.79 MW. In addition, ACCC exhibits smaller sag values due to its lighter weight and higher tensile stress, making it more stable against temperature fluctuations. In terms of energy efficiency, the use of ACCC can save energy up to ±3942 MWh per year. By considering the technical advantages and long-term energy efficiency, this study recommends the use of Amsterdam ACCC as a reconductoring solution for high-voltage transmission lines, especially in systems that have high loads and require maximum reliability and efficiency.
Studi Rancang Bangun Prototipe Kapal Pariwisata Listrik Katamaran Asimetris untuk Penyebrangan Pulau Penyengat sebagai Transportasi Laut Ramah Lingkungan Adam Adriansyah Putra; Leo Anaris Sakti; Galuh Dea Tiara Shandy; Dimas Saputra; Anggara Setya Dharma
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1098

Abstract

The need for environmentally friendly marine transportation continues to increase, especially in tourist areas such as Penyengat Island, Tanjungpinang, Riau Islands. In the local context, the design of electric boats has not been widely developed for small islands in Indonesia, even though the potential and urgency for its application is very high. Geographical constraints, limited charging infrastructure, and a lack of technical data are the main obstacles. This research focuses on the design and construction of an electric-powered tourist boat prototype with an asymmetrical catamaran hull type as an effort to support a sustainable transportation system. The boat design applies an asymmetrical catamaran hull configuration to improve sailing stability and energy efficiency. The propulsion system is controlled via a wireless PS2 joystick integrated with an ESP32 microcontroller, supported by a 24V DC motor powered by lithium-ion batteries and solar panels as a supplement. Test results show that the boat can operate stably with remote control, good energy efficiency, and zero emissions during operation. Some technical challenges encountered include limited operational duration due to battery capacity and high sensitivity of electronic components to water exposure. Overall, this prototype has great potential for further development as an environmentally friendly alternative for maritime transportation system. The stable catamaran hull design provides advantages in terms of comfort and safety, especially in calm or shallow waters. The electric propulsion system used has proven to be efficient and responsive, supported by a remote control mechanism that is easy to operate via a wireless joystick
Analisis Pengaruh Variasi Duty Cycle terhadap Karakteristik Tegangan Output dan Ripple pada Buck Converter Menggunakan Simulasi MATLAB Muhammad Ramadhani; Ricky Afrizal Murzain; Dewi Dewanti Subrata; Wisnu Ponco Prabowo; Rahmadhani Anfasa
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1100

Abstract

The use of buck converters as DC step-down voltage regulators is increasingly important in various power electronics applications. However, the quality of the output voltage is often disturbed by the presence of ripple, which is influenced by variations in the duty cycle. This study aims to analyze the effect of duty cycle variations on the output voltage and ripple of a buck converter using MATLAB/Simulink simulation. The method used is quantitative simulation by varying the duty cycle from 10% to 90% in a buck converter circuit with fixed parameters: input voltage 30 V, switching frequency 40 kHz, inductor 176.25 μH, and capacitor 44.33 μF. The simulation results show that the output voltage is proportional to the duty cycle, increasing from 3.245 V at D=10% to 26.82 V at D=90%. The highest ripple occurred at D=40% with a value of 0.07 V, while the lowest ripple was at D=50% with a value of 0.0003 V. These findings indicate the existence of an optimal operating point where the system works most stably. This study provides practical guidance in designing efficient and stable buck converters for applications such as battery charging and renewable energy systems.
Usulan Pemeliharaan Mesin Press Injection GB-36 Menggunakan Penerapan Reliability Centered Maintenance untuk Meminimalisasi Kerusakan Mesin di PT. YGI Salmandhany, Salman; Tarman Tarman; Afif Fawa Idul Fata
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1103

Abstract

PT. YGI, an automotive manufacturing company, uses the Press Injection GB-36 machine in its production process. However, this machine frequently experiences failures, causing high downtime and reduced production efficiency. This study aims to identify the types of failures, determine the most critical components, and propose a maintenance system using the Reliability Centered Maintenance (RCM) approach. The method used is descriptive qualitative, involving FMEA (Failure Mode and Effect Analysis), Logic Tree Analysis (LTA), and maintenance action selection. Data were collected through observations, historical failure documentation, and interviews. The analysis results indicate that components such as the injection nozzle, heating, and clamping are the most critical, contributing over 80% of total failures based on Pareto analysis and the highest RPN values in FMEA. Proposed maintenance actions include Condition Directed and Time Directed approaches. Additionally, the maintenance system is supplemented with standard operating procedures (SOP) and routine inspection schedules to improve machine reliability and reduce production downtime. This study is expected to enhance the efficiency and productivity of the Press Injection GB-36 machine at PT. YGI through the appropriate implementation of RCM.

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