Investigation of Load Monitoring for Pterygoid Cantilever Plate Based on Fiber Bragg Gratings

By using Fiber Bragg Gratings (FBG) sensors as strain sensors and developing an effective algorithm of the real-time and in-situ loading recognition, an online load monitoring (OLM) system has been developed. The system was integrated into the software platform of a dynamic FBG wavelength demodulator (sm130-700, MOI) based on a graphical programming language, Labview 8.0, and then applied to a pterygoid cantilever to carry out the load recognition experiment. The experimental results indicate that the present OLM system is capable of identifying both the location and magnitude of load with a high precision and has the satisfactory fault-tolerance.