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All Journal Jurnal Teknik ITS IPTEK The Journal of Engineering Journal of ICT Research and Applications MEKANIKA - JURNAL TEKNIK MESIN Journal of Energy, Material, and Instrumentation Technology Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Sewagati
Ahmad Fauzan Adziimaa
Institut Teknologi Sepuluh Nopember
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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Exponential-Offset Modelling and XRD Correlation of SOH Degradation in LiFePO4 Batteries under Extreme Loading Latif, Chaironi; Maulana, Tubagus Adam Jody; Yogianto, Mohammad Fahmi Ilmi; Adziimaa, Ahmad Fauzan
Journal of Energy, Material, and Instrumentation Technology Vol 6 No 4 (2025): Journal of Energy, Material, and Instrumentation Technology (In Press)
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.379

Abstract

Understanding the relationship between electrochemical degradation and structural changes is critical for improving the reliability of lithium-ion batteries. In this study, the state of health (SOH) of 18650-type lithium iron phosphate (LiFePO4, LFP) cells was evaluated under extreme loading using discharge resistances of 2.5 Ω and 0.005 Ω. The SOH decreased sharply after the first cycle and then declined more gradually, and the degradation trend was well described by an exponential-offset model with RMSE = 2.87, MAE = 2.25, and R2 = 0.90. Structural analysis was performed by X-ray diffraction (XRD) on electrode samples taken after one discharge at 2.5 Ω (L1), 100 discharges at 2.5 Ω (L100), and one discharge at 0.005 Ω (LD). The XRD results confirmed that the main phase was graphite, but with reduced peak intensities, peak broadening, and increased background noise, indicating crystallinity loss and partial amorphization. These findings demonstrate that SOH degradation is strongly correlated with the decline in crystallinity, and that extreme loading can trigger significant structural deterioration even within a single discharge.
Water Filtration Machine with Monitoring System for Aquades Production and Founding an Optimal Pre- treatment Filter Ratio Before Reverse Osmosis Membrane Adziimaa, Ahmad Fauzan; Rasyiid, Muhamad Sultan
Journal of ICT Research and Applications Vol. 19 No. 2 (2025)
Publisher : DRPM - ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2025.19.2.4

Abstract

The increasing demand for distilled water (Aquades) in pharmaceutical and medical applications contrasts sharply with the limited quality of municipal water supplies and the high operating costs of commercial Aquades procurement. At the same time, many small-scale facilities still lack integrated systems capable of meeting the Indonesian Ministry of Health standard (Permenkes RI No. 32/2017). Existing research on reverse osmosis (RO) systems largely focuses on membrane or filtration performance, with limited attention to real-time water-quality monitoring and systematic optimization of pre-treatment filters. This study develops an integrated filtration and monitoring system designed to ensure regulatory compliance while optimizing the composition of pre-treatment materials. The system combines silica sand, activated carbon, and zeolite pre-filters with RO, supported by six analog sensors that continuously monitor pH, turbidity, and Total Dissolved Solids before and after filtration. Validation results show high sensor accuracy, with 99.77% for TDS, 98.10% for pH, and 99.97% for turbidity. Among six tested filter compositions, the 25% silica sand-25% activated carbon-50% zeolite configuration achieves the highest average filtration efficiency of 88.96%. These findings demonstrate that optimized pre-treatment combined with real-time monitoring can significantly improve RO performance and support cost-effective Aquades production for medical use.
Design and performance testing of a safety instrumented system for water level control simulator using plc with cause-effect matrix implementation Mujiyanti, Safira Firdaus; Ahmadi, Fadhil; Patrialova, Sefi Novendra; Adziimaa, Ahmad Fauzan; Wahyu Nugroho, Dwi Oktavianto; Nanta, Tepy Lindia
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol. 4 No. 1 (2025): July
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

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Abstract

Safety Instrumented Systems (SIS) are widely employed in industrial settings to ensure operational safety and prevent system failures that could pose risks to the environment, personnel, and assets. This research presents the design of an SIS for a water level control system, utilizing Programmable Logic Control (PLC) to enhance safety and mitigate the risk of leakage or flooding. The SIS design is developed based on the Layers of Protection Analysis (LOPA) methodology, incorporating multiple protective layers, including water level measurement instruments, controllers, and final control elements to manage risk effectively. Following the LOPA-based design process, system testing was conducted using a cause-and-effect matrix to evaluate performance under various operational scenarios. The findings indicate that implementing SIS in water level control systems significantly enhances operational safety. In simulated test conditions, the SIS effectively detected potentially hazardous situations, such as excessive water levels that could lead to overflow or dangerously low levels that might disrupt process continuity. The system then executed appropriate mitigation measures, such as alerting operators or automatically shutting off water flow, to prevent accidents and equipment damage. The results demonstrate that integrating an SIS into water level control systems provides substantial benefits in managing operational risk, ensuring system reliability, and safeguarding industrial processes.
Solar-powered automatic oven machine for chili and ginger drying in the highland Adziimaa, Ahmad Fauzan; Mukti, Ilham Hary; Pramadani, Elda Yofi
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol. 3 No. 2 (2024): December
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

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Abstract

Design of automatic fire extinguishing system with interactive web display Adziimaa, Ahmad Fauzan; Azizah, Salma
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol. 3 No. 2 (2024): December
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

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Abstract

Co-Authors Ahmadi, Fadhil Anggun, Adinda Anida Oktavia Rachmadianti Anida Oktavia Rachmadianti Avicenna, Ruci Azizah, Salma Chaironi Latif Danang Adi, Danang Detak Yan Pratama Dewi Sugihartati Elda Yofi Pramadani Fadilah, Davan Ilham Kurniawan Imah Luluk Kusminah Isa Hafidz Izzan, M. Maulana, Tubagus Adam Jody Mujiyanti, Safira Firdaus Mukti, Ilham Hary Nabila Widad Dira Sinatrya Nanta, Tepy Lindia Nurisalam, Royhan Patrialova, Sefi Novendra Pramadani, Elda Yofi Rachmadi, Rahadiyan Rahmat, Nugie Rasyiid, Muhamad Sultan Risyad, Ibrahim Rozak, M. Abdul Safira Firdaus Mujiyanti Saifullah, Ahmad Wahyu Nugroho, Dwi Oktavianto Wahyu Nur Handayani Wahyudi, Ibnu Ari Yogianto, Mohammad Fahmi Ilmi Zakky, Ahmad