Evaluating the Performance of an Arduino-Based Strain Sensor System in a Cantilever Beam using Plastic Ruler Under Load Conditions

Abstract

Strain measurements are important for assessing the structural

integrity of engineering systems, especially in detecting potential

failures and planning maintenance strategies. Traditional strain

measurement methods, however, are frequently costly and complicated,

which restricts their use in small-scale and educational settings. This

study focuses on the development and evaluation of an Arduino-based

strain sensor system for cantilever beam testing using a plastic ruler as

a test sample. The system integrates a strain gauge module, an LCD for

real-time data display, and a buzzer and LED to provide feedback based

on preset thresholds. The performance of the system was evaluated

under various load conditions to determine its reliability and accuracy

in measuring strain. Experimental results show a strong correlation

with theoretical predictions, confirming the potential of the system for

practical applications in structural health monitoring. This low-cost and

user-friendly approach provides an effective tool for educational

purposes, enabling direct exploration of strain distribution and bending

mechanics.