Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts,Theory and Applications
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3D digital image correlation method is widely used for displacements measurements in laboratory conditions and for experimental applications in industries. In this paper we present enhancements of the standard method, which enable application of 3D DIC for in situ monitoring and process control in industries and out-door environment. Enhancements concern software modifications (new visualization methods and a method for automatic merging of data distributed in time) and hardware improvements (protecting equipment against hard environmental conditions). The modified 3D DIC system is applied in two interesting cases: measurements of steel struts at construction site and measurements of a pipeline in an intermediate pumping station. In both applications we additionally used an infrared camera in order to correlate deformations of measured objects with temperature changes.