In situ 3D characterization of fatigue cracks displacement fields

J. Lachambre (1) , Jean‐yves Buffiere (1) , Julien Réthoré (2, 3) , Arnaud Weck (4)

1 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
2 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
3 MIMESIS - Mécanique Multiéchelle pour les solides
4 University of Ottawa [Ottawa]

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

Mots clés: Cast iron; Digital volume correlation; Crack tip displacement; In situ

Domaines: Matériaux et structures en mécanique [physics.class-ph]

J. Lachambre, Jean‐yves Buffiere, Julien Réthoré, Arnaud Weck. In situ 3D characterization of fatigue cracks displacement fields. Frattura ed Integrità Strutturale / Fracture and Structural Integrity, 2013, 25, pp.50-53. ⟨10.3221/IGF-ESIS.25.08⟩. ⟨hal-01668792⟩