Dynamical Surface Vibration Measurement Based on FBG Sensors and Visualization

The sensor network have been designed using fiber bragg grating (FBG) sensors which could inspect the curvature of the multipoint with the technology of spatial-division-multiplexing (SDM) and wavelength-division-multiplexing (WDM). It provides accurate inspected data for surface reconstruction. The distribution for those embedded sensors is based on the strain of thin shell. The sensor is dense if the strain is great but in reverse is sparse. Furthermore the precision of the inspected has been demarcated. The experiment showed that there was a linear relationship between the curvature and the change of the wavelength. The distribution of the sensors is in reason and the precision is high. A novel algorithm also has been introduced to reconstruct a surface based on the curvature information. A dynamical surface composed of thin shell or structure has been completed and visualized in VC++6.0 and OPENGL