A new mixed mode fracture specimen (2MCG): numerical and experimental results

Rostand Moutou Pitti (1, 2) , F. Dubois (3) , O Pop (3)

1 IP - Institut Pascal
2 CENAREST - Centre national de la recherche scientifique et technologique
3 GEMH - Groupe d'Etudes des Matériaux Hétérogènes

An original Mixed Mode Crack Growth specimen (2MCG) providing fracture stability during crack propagation is presented. This geometry is a complex compromise between CTS (Compact Tension Shear) and DCB (Double Cantilever Beam) fracture specimens. Using a CCD camera and a testing machine equipped with data acquisition system, an image analysis protocol allows to plot instantaneous crack propagation is performed and the Force-displacement curves are recorded. With these data, the forces-cracks lengths curves are plotted. As results, the experimental (obtained by the compliance method) and numerical (given by M integral in finite element) energy release rate are compared.

Domaines: Matériaux; Structures; Matériaux composites et construction; Construction durable

Rostand Moutou Pitti, F. Dubois, O Pop. A new mixed mode fracture specimen (2MCG): numerical and experimental results. 12th International Conference on Fracture, Jul 2009, Ottawa, Canada. ⟨hal-01616923⟩