Table 1 Comparison of the deformation according to the sensors and the targets.

From: Assessment of pavement deflection under vehicle loads using a 3D-DIC system in the field

Step

ΔZ DIC 1 (mm)

Sensor 1 (mm)

Error 1 (mm)

Absolute error 1 (mm)

ΔZ DIC 2 (mm)

Sensor 2 (mm)

Error 2 (mm)

Absolute error 2 (mm)

10

− 0.003

− 0.001

− 0.002

0.002

− 0.006

0

− 0.006

0.006

11

0.000

− 0.001

0.001

0.001

− 0.004

− 0.001

− 0.003

0.003

12

− 0.001

0

− 0.001

0.001

− 0.004

0.003

− 0.007

0.007

13

0.001

− 0.004

0.005

0.005

− 0.001

− 0.006

0.005

0.005

14

− 0.027

− 0.036

0.009

0.009

− 0.005

− 0.008

0.003

0.003

15

− 0.049

− 0.043

− 0.006

0.006

− 0.011

− 0.015

0.004

0.004

16

− 0.075

− 0.041

− 0.034

0.034

− 0.020

− 0.019

− 0.001

0.001

17

− 0.08

− 0.041

− 0.039

0.039

− 0.026

− 0.021

− 0.005

0.005

18

− 0.082

− 0.038

− 0.044

0.044

− 0.025

− 0.021

− 0.004

0.004

19

− 0.082

− 0.039

− 0.043

0.043

− 0.027

− 0.021

− 0.006

0.006

20

− 0.064

− 0.037

− 0.027

0.027

− 0.031

− 0.022

− 0.009

0.009

Mean value

  

− 0.016

0.019

  

− 0.003

0.005

Standard deviation

  

0.021

0.018

  

0.005

0.002

Minimum value

  

− 0.044

0.001

  

− 0.009

0.001

Maximum value

  

0.009

0.044

  

0.005

0.009