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Digital Volume Correlation


Quantify displacements between an initial and a deformed volume in a simple, intuitive way. With the digital volume correlation features in VGSTUDIO MAX, you can calculate the movement of each voxel from one volume to another for the analysis of in-situ tests or part deformation based on real world component loads. The software measures local displacement and strain tensors, visualizes deformations and movements via displacement arrows or lines, and maps results onto finite element (FE) meshes to validate your simulations.

Identify cracks in your parts. With semi-automatic crack segmentation, you can quantify cracks in your scans. By using multiple scans, you can compare these data sets and detect defects that can’t be seen with the naked eye. Defects can be characterized, for example, by their surface.

Digital Volume Correlation Features

The digital volume correlation analysis: 

  • Correlates volumes at different states to calculate displacements and strains.
  • Allows you to investigate local strains to fit or validate material models in material science.
  • Is a powerful tool for damage detection in composite materials, making it possible to investigate small cracks by comparing gray values in two different states.
  • Matches material (e.g., bones) between different states in life science to study growth or other structural changes.
  • Offers two different correlation approaches to match volumes with the same image modality (e.g., two CT scans) or with different image modality (e.g., CT scan and MRI).
Visualize displacements between an initial and a deformed volume

Investigating Deformations

Visualize and measure local displacements

Visualize dimensional local strain tensor components

Results mapped on a mesh

Workflow for Validation (or Fitting) of Material Models

Displacement histogram

Detecting Defects 

With digital volume correlation analysis, you can:

  • Detect defects invisible to the naked eye, such as cracks within the microstructure.
  • Separate and quantify these cracks by surface, volume, and shape* and use the results for damage modeling.
  • Gain full information of the microstructure, like fiber orientation and volume fraction, from the undamaged sample using further material analysis features available in VGSTUDIO MAX.

*Porosity/Inclusion Analysis Module required

Crack visualized in red