In situ 3D characterization of fatigue cracks displacement fields

The three dimensional growth of fatigue cracks in samples of nodular graphite cast iron ischaracterized using laboratory X-ray computed tomography. The cracks grow from laser machined artificialdefects, their development is monitored in situ using laboratory X-ray computed tomography (lab. CT) andDigital Volume Correlation (DVC). The combination of both techniques gives access to the 3D displacementfield at the tip of the crack (mainly mode I opening)