Strain Field Reconstruction Method based on Fiber Grating
In order to meet the strain monitoring requirements of helicopter key load-bearing com-ponents,a distributed strain field monitoring system based on fiber gratings was proposed in combi-nation with the characteristics of high sensitivity,small size,anti-electromagnetic interference and easy distribution networking.The strain field inversion algorithm based on cubic spline function in-terpolation was designed by theoretically analyzing the strain transfer and sensor arrangement of fiber gratings.Compared with Ansys finite element simulation data,the average error of strain field inver-sion was 5.24％,the results showed that this method could obtain real-time and accurate informa-tion of strain field under load.
fiber optic gratingstrain transferthree timesfinite element simulation
万方数据
维普
