Structural Health Monitoring
Publishing Time:2016-12-25

Structural Health Monitoring

A series of Fiber Optic Sensors (FOS) and its measure systems with multi-parameters have been developed and applied for Structural Health Monitoring (SHM) of composite materials and structures. This FOSs can measure strain, temperature and acoustic emission, and also can be used for monitoring processes of manufacturing composites. The measure systems based on TDM technology realize multi-channels measure for Fiber Bragg Grating (FBG). Various kinds of FOSs have been applied for the research of manufacturing composites and the residual strain regulation, which propose a novel monitoring method for residual strain from structure.

(a) The fiber optic acoustic emission sensor is applied for real-time monitoring composite materials and structures damage and identification. Research achievements supply important polytechnic design parameters of composite materials and structures and monitoring and control technology for application departments such as aviation, aerospace and etc.

(b) The Fiber Bragg Grating (FBG) sensor is applied for deformation monitoring of flexible variable camber wing, and two-dimensional shape deformation of a shape memory polymer plate as a vector bending sensor.

Fig.1 A flexible variable camber wing model with four FBG sensors

Fig. 2 Smart wind turbine blade static load test set-up