Study on defect detection of industrial parts with Digital Image Correlation method

In this paper an explanation of Digital Image Correlationmethod and its abilities is performed and the basic principleof Digital Image Correlation for measuring surfacedisplacement is described. In the following Digital ImageCorrelation usage has been explained. It has been showedthat the displacement components on the surface of anobject are easily obtained using this method by recordingthe images of the surface before and after deformation andother parameters such as stress and strain can be studied bymeasuring displacement under mechanical loads. Surface ofthe part should be divided to many subsets in Digital ImageCorrelation method to measure displacement. A high speedcamera captures many frames in second from loaded part.Displacement is measured with comparison between imagesbefore and after of loading of part and some mathematicalcalculations.