What is a Strain sensor?

A strain sensor is a device used to measure strain (deformation) caused by applied force or load. It typically uses a metal foil (gauge), and when an object deforms, the resistance of the metal changes. This change is detected as an electrical signal, allowing the strain of the object to be measured. Strain sensors are mainly used to monitor the safety of structures and machines, such as measuring the load conditions of bridges, buildings, and machine components. These sensors are highly accurate and can detect real-time changes in force distribution or load.

Application of Strain sensor

✅ Bridge Monitoring
Strain sensors are used to monitor the structure of bridges, measuring deformation caused by vehicle passage or wind. This helps detect overloads or structural anomalies early.
✅ Machine Component Monitoring
When machine components are used over time, minute strains accumulate, which can lead to failure. Strain sensors monitor these changes in real-time, helping to determine the right time for maintenance.
✅ Aircraft Safety Checks
Strain sensors are installed on aircraft wings and body to measure the loads during flight, allowing for real-time monitoring of the aircraft’s structural integrity. This enables prompt action before excessive stress occurs.
✅ Building Seismic Safety Checks
After natural disasters such as earthquakes, strain sensors are used to check the strain status of buildings. This allows for quick identification of structural damage and swift action to ensure safety.

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