
Digital Image Correlation (DIC) is a 3D full-field, non-contact optical technique to measure contour, deformation, vibration and strain on almost any material. The technique can be used with many tests including tensile, torsion, bending and combined loading for both static and dynamic applications.
The DIC method can be applied from very small (micro) to large testing areas – and the results are readily comparable with FEA results or strain gauges.
The video below shows a Ball Inflation Test with an 8 Multicamera Digital Image Correlation System, the test was developed in partnership with the University Ljubljana – Faculty of Mechanical Engineering.
In this second video below we show a Double-sided Tensile Test with a 4 Multicamera Digital Image Correlation System.
Key Features:
- 3D Full-field, Real-time display of displacement and strain overlaid on live image
- Real-Time Correlation with analog voltage output – evaluate, display and output data in real-time for interfacing with other equipment
- Multi-camera system for up to 360 degree measurement around an object and simultaneous front and back side measurements (thinning)
- Measurement area < 1mm up to several square meters
- Fast and easy automatic calibration procedure
- Online feedback of accuracy and quality
- All data with a confidence margin (error approximation)
- Full access to data using an open data format
- Synchronous recording of analog data
- Extended export to FEA software for comparisons
- Different coordinate systems
- High speed cameras up to 1,000,000 frames/sec
Measurement Principle
Digital Image Correlation (DIC) is a full-field image analysis method, based on grey value digital images, that can determine the contour and the displacements of an object under load in three dimensions.