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All Journal Journal of Innovation and Technology Jurnal Polimesin
Rizal Nazarrudin
Universitas Lampung
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Development and validation of a modified TM25 journal bearing test equipment for load-carrying capacity and frictional torque measurement Nurcahya Nugraha; Jamiatul Akmal; Martinus Martinus; Ahmad Su'udi; Rizal Nazarrudin; Eko Wahyu Saputra; Wahyu Adani; Fauzan Azima
Jurnal Polimesin Vol 24, No 3 (2026): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i3.8490

Abstract

This study developed and validated a low-cost measurement platform by upgrading an existing TM25 journal bearing demonstration unit. The original apparatus was limited to pressure distribution observation through manometer tubes, whereas the modified system integrated load cells and an Arduino-based data acquisition system to measure load-carrying capacity and frictional torque in real time. Load cell calibration was conducted using an eight-point dead-weight method with three repetitions, resulting in a calibration deviation of less than 2% across the test range. Experimental testing was performed at five rotational speeds (1000–2000 rpm) using three lubricant grades (SAE 10W-30, SAE 10W-40, and SAE 20W-50) to evaluate their influence on bearing performance. The results show that both load-carrying capacity and frictional torque increase with rotational speed and lubricant viscosity, with the highest values obtained using SAE 20W-50. The measured trends agree well with the original TM25 pressure distribution data and are consistent with hydrodynamic lubrication theory. The modified test equipment provides stable and repeatable measurements and extends the functionality of the TM25 unit as an experimental platform for tribology education and journal bearing performance analysis.
Vehicle Safety System Integrated with GSM Network (Global System for Mobile Communications) on Vehicle Ignition System Akhmad Riszal; Suryadiwansa Harun; Yanuar Burhanuddin; Abdul Hakim Md Yusop; Martinus; Arinal Hamni; Rizal Adi Saputra; Rizal Nazarrudin
Jurnal Inovasi Teknologi Vol 6 No 1 (2025): April
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

This research aims to design and create a sms-based motor vehicle security system with an ATMega 8535 microcontroller. This research utilizes hand phone technology and microcontroller. Making this tool has an economical price to secure motorized vehicles. Important prototypes in making this tool are the ATMega 8535 microcontroller, GSM Modem and HP. In making this tool the first thing to make is to make a microcontroller program for the controller. Making this program uses CV Avr soft ware (Code Vision Avr). After the program is finished, the program is downloaded to the microcontroller. Control is done by the microcontroller when it gets input. The result of this research is to get a vehicle security system that is integrated by the ignition system on a motorcycle. The process of securing a motorized vehicle when it is stolen is, the security system will send sms information that the motorcycle is stolen, the alarm sounds and the ignition system is cut off. To turn off the alarm and start the motorcycle, the owner sends an SMS with the format *ALOF# to the security system and starts the motorcycle normally (Pull the front brake three times then position the key to ON mode).
Co-Authors Abdul Hakim Md Yusop Ahmad Su'udi Arinal Hamni Eko Wahyu Saputra Fauzan Azima Jamiatul Akmal Martinus Martinus Martinus nurcahya nugraha Riszal, Akhmad Rizal Adi Saputra Suryadiwansa Harun Wahyu Adani Yanuar Burhanuddin