Fatigue microcrack detection with digital image correlation, J. Strain Analysis [accepted

A digital image correlation method is proposed to detect and quan-tify automatically microcracks on the surface of a specimen during a fatigue test. The proposed procedure allows for a fast scanning of the entire surface with all possible (pixel-wise) locations of microcrack centers and the detection of cracks having a sub-pixel opening. An experimental test case is presented as an illustration of the method and a comparison with a replica technique is performed