Applying the VDI 2626 Directive for 3D DIC Systems

The VDI 2626 is a directive and guideline for digital image correlation, which describes basic procedures for acceptance and monitoring of digital image correlation systems. The test procedures are a zero deformation test in combination with measuring a defined displacement and optionally a defined strain. The results of the test are used to generate characteristic values of the stereo system setup and the system software with regards to VDI 2626.

The zero deformation test characterizes the influence of systematic errors such as spatial distortions due to e. g. imperfect calibration as well as random noise, such as thermal air currents or camera noise. The absolute displacement is tracing back to the national measurement normal or international standard in accordance with the International System of Units (SI).

While the zero deformation test can be performed simply with any rigid body prepared with speckles, the absolute displacement and strain tests require some more specialized equipment. More information on the VDI 2626 will be available soon.

For more information, please contact our Support Team.