Name:
Date:
Data processing 2: experimental speckle images
A. Brazilian disk
1. Process own experimental images
Impact of noise and image averaging
2. Process benchmark experimental images
Qualitative comparison to the analytical solution
Quantitative comparison to the analytical solution
Identification of the material properties
B. Tensile test
Technique used
Noise Camera
Pre-Filtering
Subset
Step
Correlation criterion
Shape function
Interpolation function
Measurement points
Total number of images
Pixel to mm conversion
Displacement
Spatial resolution
Resolution
Strain
Smoothing method
VSG
Spatial resolution
Resolution
Single Camera Digital Image Correlation
0.7 %
Gaussian – Kernel 5
21
5
ZNSSD
affine
Bicubic splines
4059
311 ( 2 Hz)
1 pixel = 0.085mm
21 pixels, 1.78 mm
0.03 pixels, 0.0027 mm
Polynomial – bilinear
71 pixels, 6.04 mm
91 pixels, 7.65 mm
211 µm/m
2
Data processing 2: experimental speckle images