Fig. 1. Schematic diagram of fiber grating sensing

Fig. 2. Schematic diagram of the deformation of the micro-element structure

Fig. 3. Flow chart of surface reconstruction algorithm

Fig. 4. Flow chart of piecewise fitting algorithm

Fig. 5. Diagram of curve arc division

Fig. 6. Schematic diagram of projection coordinate transformation reconstruction algorithm

Fig. 7. Sinusoidal reconstruction diagram

Fig. 8. Distribution of plate shell curvature

Fig. 9. Diagram of experimental device for detecting strain

Fig. 10. Strain distribution of ANSYS

Fig. 11. Distributed array of FBG sensors

Fig. 12. Reconstruction of plate surface

Fig. 13. Three-dimensional structure diagram of ANSYS

Fig. 14. Comparison graph of algorithm reconstruction strain and ANSYS simulation strain

Fig. 15. Comparison of algorithm reconstruction displacement and simulation displacement at the x-direction measuring point

Fig. 16. Comparison of algorithm reconstruction displacement and simulation displacement at the y-direction measuring point

Fig. 17. Comparison of algorithm reconstruction displacement and simulation displacement at the z-direction measuring point