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All Journal Jurnal Elementer (Elektro dan Mesin Terapan) Jurnal Inovator Proceeding Applied Business and Engineering Conference Journal of Embedded Systems, Security and Intelligent Systems
Rahmat Fajrul
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Pengaruh Konfigurasi Orientasi Serat 00 Dan 450 Karbon/Epoksi (Woven) terhadap Karakterisasi Mekanik Drive Shaft Firman Alhaffis; Rahmat Fajrul
Jurnal Elektro dan Mesin Terapan Vol. 7 No. 2 (2021): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (661.538 KB) | DOI: 10.35143/elementer.v7i2.5144

Abstract

Penelitian ini bertujuan untuk mengetahui karakteristik dari material serat karbon TC35-12K tipe woven dipadukan dengan resin epoksi sebagai matrik. Orientasi serat yang diterapkan adalah 00 dan 450 pada masing-masing layer dan menemukan susunan layer yang paling optimal. Metode dalam penelitian ini yaitu dengan simulasi matematis dan komputasi menggunakan software finite element Analysis (FEA). Hasil dari penelitian menemukan bahwa orientasi serat 450 serat karbon serat karbon TC35-12K/epoksi woven memiliki kemampuan sangat baik terhadap torsi dengan nilai total deformation 1,38 mm apabila diberikan torsi 120 N.m. Selain itu orientasi serat 00 memiliki kemampuan lebih baik terhadap beban tarik dan bending. Orientasi serat 00 juga meningkatkan nilai natural frequency 151,65 Hz karena kakakuan menjadi lebih baik. Konfigurasi orientasi serat dan urutan susunan layer optimal adalah 45/45/0/0 yang mampu terhadap torsi, tarik, bending, dan putaran kritis. Putaran kritis berdampak pada punca getaran, semakin tinggi angka putaran kritis akan lebih baik. Konfigurasi yang dipilih mampu hingga putaran 9000 rpm.
RANCANGAN ANTARMUKA UNTUK KALIBRASI SENSOR SISTEM TELEMETRI KUALITAS AIR KOLAM BUDIDAYA IKAN Subandri, Muhammad Asep; Fajri P. Putra; Rahmat Fajrul
ABEC Indonesia Vol. 11 (2023): 11th Applied Business and Engineering Conference
Publisher : Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to develop a calibration interface that enables the routine and effective calibration of water quality telemetry system sensors in fish cultivation ponds. This interface is designed to provide users, namely fish farmers, the ability to perform dynamic calibration based on linear regression methods. With this feature, fish farmers can recalibrate the sensor based on fluctuations in the cultivation pond environment, thereby improving measurement accuracy continuously. The calibration method employed is linear regression, which allows for the identification of the mathematical relationship between sensor data and reference data. By collecting sensor data and reference data, linear regression parameters such as offset and slope can be calculated and applied to sensor measurements. This calibration interface feature can be accessed through a computer or mobile device with an intuitive display, making it easy for fish farmers to operate. The research results indicate that the use of a dynamic calibration interface with linear regression methods can enhance sensor measurement accuracy continuously. Fish farmers can perform routine calibrations in accordance with environmental changes, contributing to better water quality management in fish cultivation. The success of this interface opens opportunities for the development of technology that supports optimal fish growth and health within the environment.
Rancang Bangun Mesin Pencetak Pelet Ikan Multifungsi Rahmat Fajrul; Akmal Indra; Bambang Dwi Haripriadi
Jurnal INOVATOR Vol. 6 No. 1 (2023): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v6i1.6

Abstract

One of the obstacles in raising tapah fish is in the supply of feed. Tapah fish is a carnivorous predatory fish that eats small fish so it is very dependent on live fish feed. For this reason, it is necessary to get used to feeding with artificial feed (pellets). Usually for one time the process of making feed uses a total weight of 10 kg of raw materials and takes approximately 4 hours. This situation is very detrimental to fish farmers because they cannot increase the number of fish and the number of ponds anymore due to limited feed in the form of pellets. Apart from raising tapah fish, the people of Lubuk Gaung Village also have a poultry business, especially chicken livestock. The feed used in this poultry is milled corn feed. In the manufacture of ground corn feed, 60% is corn raw material. Corn grain size is very influential on the growth of poultry. Both of these machines are already sold on the market separately, it's just that these two machines are quite expensive. For animal feed pellet machines, they are sold at a price of Rp. 15,760,000 and a corn grinding machine is sold at Rp. 8,500,000
IoT-Based Smart Energy Management System for Air-Conditioning Energy Efficiency in Mosques Syaiful Amri; Rahmat Fajrul; Johny Custer; Murdani; Azizul
Journal of Embedded Systems, Security and Intelligent Systems Vol 7 No 1 (2026): March 2026
Publisher : Program Studi Teknik Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/jessi.v7i1.2604

Abstract

Purpose – This study aims to develop and evaluate an Internet of Things (IoT)-based Smart Energy Management System (SEMS) to improve air-conditioning energy efficiency in mosque buildings. Design/methods/approach – The proposed system utilizes an infrared (IR) transmitter to replicate native air-conditioner remote signals, allowing implementation without modifying existing electrical installations. The system was implemented and tested at Taj-Al’ulum Mosque, Politeknik Negeri Bengkalis, under four operating modes: Default Manual, IoT Manual, Automatic, and Hybrid. Performance evaluation was conducted by comparing energy consumption across these modes and validating results through simulation and field testing. Findings – The results indicate that the Automatic mode achieved the highest energy savings, reducing energy consumption by 23.7% compared to the baseline, while also demonstrating the most stable operational performance. The Hybrid and IoT Manual modes also contributed to energy savings, although their effectiveness was influenced by user intervention and variations in mosque activities. Model validation showed strong agreement between simulation and real-world implementation, confirming system reliability. Research implications/limitations – This study is limited to a single case study location and focuses primarily on air-conditioning systems. Future research could expand to multiple buildings, integrate additional energy loads such as lighting and audio systems, and explore long-term performance under varying environmental and occupancy conditions. Originality/value – This study offers a practical, non-invasive, and replicable IoT-based energy management solution for mosque buildings, contributing to the development of smart energy management systems for smart mosques, particularly in environments with intermittent occupancy patterns.
Co-Authors Akmal Indra Azizul Bambang Dwi Haripriadi Custer, Johny Fajri P. Putra Firman Alhaffis Muhammad Asep Subandri Murdani Syaiful Amri