Q400 | Digital Image CorrelationFull field Deformation Measurement
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Flexible strain sensor for a wide application range
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With the Q400 system, the 2D or 3D deformation analysis is performed in a precise, fast and user-friendly manner. The system is also characterized by the high flexibility of the optical setup and thus can be optimally adapted to the application. The intuitive measuring software Istra4D provides, in addition to the spatial measured values displacement, deformation, strain, coordinates, etc. also the corresponding measuring accuracy for each measured value. |
Measuring principle: One or more digital cameras record the deformation process. The object surface has a stochastic (natural or prepared) pattern ("speckle pattern"). The images are automatically evaluated using subpixel-accurate digital image correlation algorithms. This assigns the local surface pattern to the camera pixels and measures 3D coordinates, 3D displacements, 3D deformations and surface strains components. |
Features
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Result of a Q400 strain measurement at a an einer water pipe wrench. The color scale shows tensile strain (red) and compression strain (blue) corresponding to the mechanical load of the wrench. |
Reference state vs. deformed state
Major strain E1 of the image sequence.
Strain calculation by stereo correlation and temporal crrelation.
