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All Journal Machine : Jurnal Teknik Mesin Jurnal Surya Masyarakat Jambura Journal of Electrical and Electronics Engineering
Mubarak, Abdul Haris
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Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering Other

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Pemberdayaan Karang Taruna Bina Bangsa Anrang Bulukumba dalam Pemanfaatan Limbah Biji Durian sebagai Bahan Dasar Adonan Biskuit Kamaruddin, Mudyawati; Dewi, Ratnasari; Triananinsi, Nurhidayat; Mubarak, Abdul Haris; Cahyawan, Diawan; Mukrimah, Mukrimah; Kurnia, Eka; Pia, Pia; Harmawati, Andi
Jurnal Surya Masyarakat Vol 5, No 2 (2023): Mei 2023
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jsm.5.2.2023.155-160

Abstract

Every durian season, there is an abundance of durian seed waste in Anrang village, Bulukumba district, South Sulawesi. This gives the impression of a village environment piled high with garbage in the form of durian seeds and skins. The goal of this community service project is to assist the Anrang village community, through the Anrang Youth Organization, in converting waste durian seeds into flour, which will be used to make biscuits. Using the project-based learning method, this activity provides counseling, training, and direct assistance to members of Karang Taruna Anrang. The activity produced very satisfactory results, with a product in the form of durian seed flour that provided a suitable taste and structure as a biscuit ingredient. Durian seed flour has a pleasant taste, structure, and aroma, making it an excellent potential ingredient for biscuits.
RANCANG BANGUN PENDINGIN OTOMATIS PADA SAMBUNGAN PLAT BAJA GULUNGAN (HOT ROLL COIL) PASCA PENGELASAN Mubarak, Abdul Haris
Machine : Jurnal Teknik Mesin Vol 11 No 1 (2025): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v11i1.6227

Abstract

This research aims to create an automatic cooling device for rolled steel joints (Hot Roll Coil) produced by a nickel processing factory operating in the Morowali Industrial Area. Steel plates in the form of long rolls that are rolled are first welded to connect the steel plates to produce rolls of steel plate that are ready to be marketed. Joining steel using this welding method makes the steel plate hot with a temperature in the range of 100°C-200°C. The temperature of the steel plate after welding must be immediately lowered before rolling, because otherwise the steel joints will come apart and could hamper the production process because the broken plate will have to repeat the welding process from the beginning. The plate temperature required to enter the rolling process is 40°C - 60°C. This research has produced a tool to cool steel joints by automatically spraying the steel joints and succeeded in reducing the plate temperature from 100℃ - 200℃ to a constant temperature of 40℃ - 50℃ according to the required temperature.
Implementation of DC Motor Driver in Autoclave Reactor in Nickel Laterite Ore Processing Afandy, Moh .; Rianto, Muhammad Ikbal; Mubarak, Abdul Haris
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 2 (2025): Juli - Desember 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i2.31759

Abstract

This study aims to design and test a DC motor speed monitoring system in the process of stirring acid solution and Nickel Laterite ore in an Autoclave reactor tube. The control system uses a PWM (Pulse Width Modulation) signal with a constant duty cycle of 100% which is given to the MOSFET-based H-Bridge topology DC motor driver circuit. The determination of the duty cycle is based on the RPM rotation of the stirrer in the reactor tank with a multilevel test from 10% - 100%. Testing was carried out in two processing conditions, each with an acid concentration of 4% and 5%, to evaluate system performance against variations in viscosity load. The results of the study showed that the system was able to maintain the stability of the motor rotation speed in the nickel processing range with a leach solution content of 4% and 5% with an average speed of 193 RPM, even though there was an increase in load due to the concentration of the solution. The performance of the driver circuit proved effective in distributing power continuously without symptoms of overheating or switching interference, and was able to protect the system from the effects of reverse voltage. The mixing process showed homogeneous results with adequate stirring efficiency in both solution conditions. The final result in the form of filtrate liquid and residual residue is obtained from the process evaluation. The monitoring system and DC motor driver designed have shown reliable performance in laboratory-scale reactor stirring applications with a local monitor system, and have the potential to be further developed into an adaptive control system based on feedback sensors for energy efficiency and a remote monitoring and control system.Penelitian ini bertujuan untuk merancang serta menguji sistem monitoring kecepatan motor DC pada proses pengadukan larutan asam dan Nikel Laterite ore dalam tabung reaktor Autoclave. Sistem kontrol menggunakan sinyal PWM (Pulse Width Modulation) dengan dutycycle konstan sebesar 100% yang diberikan pada rangkaian driver motor DC  topologi H-Bridge berbasis MOSFET. Penentuan dutycycle didasarkan pada putaran RPM pengaduk pada tangka reactor dengan pengujian bertingkat dari 10 % - 100%. Pengujian dilakukan dalam dua kondisi proses pengolahan, masing-masing dengan konsentrasi asam 4% dan 5%, untuk mengevaluasi performa sistem terhadap variasi beban viskositas. Dari hasil penelitian menunjukkan bahwa sistem mampu mempertahankan kestabilan kecepatan putar motor dalam rentang pemprosesan nikel dengan kadar larutan pelindi 4% dan 5% dengan kecepatan rata-rata 193 RPM, meskipun terdapat peningkatan beban akibat konsentrasi larutan. Kinerja rangkaian driver terbukti efektif dalam mendistribusikan daya secara kontinu tanpa gejala overheat atau gangguan switching, serta mampu melindungi sistem dari efek tegangan balik. Proses pencampuran menunjukkan hasil homogen dengan efisiensi pengadukan yang memadai pada kedua kondisi larutan. Hasil akhir berupa cairan filtrate dan sisa residu diperoleh dari valuasi proses. Sistem monitoring dan driver motor DC yang dirancang telah menunjukkan performa andal dalam aplikasi pengadukan reaktor skala laboratorium dengan system local monitor, serta berpotensi dikembangkan lebih lanjut menuju sistem kontrol adaptif berbasis sensor umpan balik untuk efisiensi energi dan system monitoring dan control jarak jauh.
Temperature Monitoring System for 3 Phase Electric Arc Furnace (EAF) Transformer Cooling Afandy, Moh; Mubarak, Abdul Haris; Rianto, Muhammad Ikbal
Jambura Journal of Electrical and Electronics Engineering Vol 6, No 2 (2024): Juli - Desember 2024
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v6i2.24570

Abstract

 The Electric Arc Furnace (EAF) transformer is a key component in the steel melting system using a furnace. The transformer functions to convert the electrical voltage from the main electrical network into the electrical voltage needed to form an electric arc in the melting furnace. In this research, the EAF transformer configuration uses a delta-wye configuration with a furnace melting capacity of 10 kg nickel ore. In its working system, this transformer will produce a very high current when the melting system is running. So this process will produce excessive heat on the EAF transformer side. As a result of the significant heat generated in the melting process, this transformer is equipped with a cooling system in the form of transformer oil which is a heat release medium and maintains the correct operating temperature. An appropriate temperature monitoring system will increase the work efficiency of the transformer and prevent excessive damage to the system. The sensor used in the design is the RTD PT 100 sensor which is installed at 7 measurement points. The main controller for data collecting and data processing used is a Siemens PLC. Data that has been processed on the main control device is transmitted to the IoT cloud server using a V-box device. As a human machine interface (HMI) web SCADA is used to read data in real time. From the results of the tests that have been carried out, the highest error presentation value obtained in measurements on the T phase is 0.05%. Meanwhile, when measuring the transformer oil sensor, an error value of 0% was obtained.
Co-Authors Afandy, Moh Afandy, Moh . Andi Harmawati Novriani HS Cahyawan, Diawan Dewi Ratnasari Eka Kurnia, Eka Mudyawati Kamaruddin MUKRIMAH MUKRIMAH, MUKRIMAH Pia, Pia Rianto, Muhammad Ikbal Triananinsi, Nurhidayat