2D-/3D Stereo Digital Image Correlation

Digital Image Correlation (DIC) tracks the movement of the naturally occurring or applied surface pattern during the test or experiment. This is done by analyzing the displacement of the pattern within subsets of the whole image.

In 3D stereoscopic DIC systems two cameras view the surface of the specimen. The camera system is calibrated such that the relationship between raw and world space is known. By matching the pattern between cameras and using the calibration model, the height and z-displacement of the surface can be calculated.

The user acquires a series of images during a material testing experiment, with the first image normally being the case of zero applied load.
The image sequence is analysed by searching for and matching the pattern shift over the entire surface. The difference in pattern is minimised for each subset, and this corresponds to the displacement giving the vector length and direction. With standard single camera or stereoscopic multi camera setups, 2D in-plane deformation or full 3D surface measurements are achieved. Local derivative calculations give the strain tensors across the entire surface.

Product Information

Full-Field Strain Measurement System

Granular Flows: Tectonic Plate Simulation

High-Speed DIC

High Strain Rate Testing

High Temperature DIC

High Temperature Testing

Micro DIC

Ring Stent Wire Testing

Fluid-Structure Interaction

Flexible Aerofoil Sections

FSI on Composites

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行业应用

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