3D Analysis of a Fatigue Crack in Cast Iron Using Digital Volume Correlation of X-ray Tomographic Images
Three-dimensional (3D) images of a thumbnail corner fatigue crack are obtained in a sample of nodular graphite cast iron using laboratory X-ray computed tomography. The crack is initiated in situ from an artificial defect created by laser machining, its development is followed in situ and Digital Volume Correlation (DVC) analysis of the 3D images gives access to the 3D displacement field at the tip of the crack (mainly mode I opening).
KeywordsX-ray tomography Digital volume correlation 3D fatigue crack In situ
This work was funded by the French ANR program (grant ANR-09-BLAN-0009-01 - RUPXCUBE Project).
- 1.Suresh S (1998) Fatigue of materials, (2nd ed.) Cambridge University Press, CambridgeGoogle Scholar
- 3.Weck A, Crawford THR, Borowiec A, Wilkinson DS, Preston JS (2007) Femtosecond laser-based fabrication of a new model material to study fracture. Appl Phys A Mater Sci Process 86:55–61Google Scholar
- 8.Williams ML (1957) On the stress distribution at the base of a stationary crack. ASME J Appl Mech 24:109–114Google Scholar