Fig. 1. Principle of FGB sensing

Fig. 2. Finite element simulation model

Fig. 3. FBG deformation diagram under bending conditions

Fig. 4. Calibration diagram of FBG strain

Fig. 5. Variation of wavelength shift of FBG with strain

Fig. 6. Flow chart of NSGA-II algorithm

Fig. 7. Deconstruction results in the case of circular arcs with different curvature radii

Fig. 8. RBF neural network model structure

Fig. 9. PSO-RBF flow chart

Fig. 10. Displacement reconstruction results in the case of arcs with different curvature radii

Fig. 11. Shape reconstruction results in the case of circular arcs with different curvature radii