Description
Name of Notes : – Structural Health Monitoring of Composites Lecture Note
Introduction
In SHM, various sensors are integrated with target structures to obtain different structural information, such as temperature, stress, strain, vibration and so on. The familiar SHM sensors are resistance strain gages, fiber optic sensors, piezoelectric sensors, eddy current sensors, and micro electromechanical systems (MEMS) sensors.
Resistance strain gages
Resistance strain gage is a traditional strain sensor element. The gage mainly consists of a resistance grid of thin wire or foil, connector and encapsulation layer, as shown in figure 1(a). With the strain-resistance effect, the grid senses the structure’s strain as its resistance value, which can be finally converted to the voltage signal with Wheatstone bridge circuit (seen in figure 1(b)).Resistance strain gage, of very small thickness but high sensitivity, can be easily bonded onto the structures and applicable in high temperature or pressure conditions.
Figure 1.
a) Configuration of a resistance strain gage (b) Wheatstone bridge circuit
Modules / Lectures
- symbols
- Overview of Structural Health Monitoring (SHM)
- Active Vibration Control of Smart Composite Plate
- SHM in Ribbon Reinforced Composites
- Active SHM using Magnetostrictive Material
- Experimental Modal Analysis for SHM
- References
Reviews
There are no reviews yet