Table 2: Comparison of the calculated internal force compared to the applied force.

Load (kN)BOTDA (kN)Absolut error (%)FBG (kN)Absolute error (%)

00000
3.673.1713.623.2112.53
6.676.236.606.630.60
109.198.19.138.7
13.3312.585.6313.220.83
16.6716.004.0216.063.66
2019.034.8519.691.55
23.3322.593.1722.633.00
26.6726.480.7126.460.79
3029.382.0729.561.47