Table 2.

Comparison between the deformation according to the sensors and the DIC-based interpolation.

Step	Interpolated DIC (mm)	Sensor 1 (mm)	Error 1 (mm)	Interpolated DIC (mm)	Sensor 2 (mm)	Error 2 (mm)
11	0.002	0	0.002	− 0.006	− 0.004	− 0.002
12	− 0.001	− 0.001	0	− 0.004	− 0.004	0.000
13	0.001	0.001	0	− 0.019	− 0.001	− 0.018
14	− 0.019	− 0.027	0.008	− 0.018	− 0.005	− 0.013
15	− 0.033	− 0.049	0.016	− 0.034	− 0.011	− 0.023
16	− 0.055	− 0.075	0.020	− 0.044	− 0.020	− 0.024
17	− 0.052	− 0.080	0.028	− 0.046	− 0.026	− 0.020
18	− 0.055	− 0.082	0.027	− 0.036	− 0.025	− 0.011
19	− 0.053	− 0.082	0.029	− 0.022	− 0.027	0.005
20	− 0.046	− 0.064	0.018	− 0.019	− 0.031	0.012
Mean value			0.015			− 0.009
Standard deviation			0.011			0.013
Minimum absolute error			0			− 0.024
Maximum absolute error			0.029			0.012