Time-dependent rupture and slow crack growth: elastic and viscoplastic dynamics

Loïc Vanel 1, 2 Sergio Ciliberto 2 Pierre-Philippe Cortet 2 Stéphane Santucci 2
1 LPMCN - Laboratoire de Physique de la Matière Condensée et Nanostructures
2 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
Abstract : We review some theoretical and experimental works describing the slow, thermally activated, growth of a crack in a solid material under stress. Theoretical approaches fall into two main classes: creep crack growth models and elastic trap models. On one hand, creep crack growth models describe the viscoplastic flow of matter until some characteristic rupture strain is reached. This first category of models applies especially to the case of polymer rupture. On the other hand, elastic trap models assume that a rupture energy barrier is overcome by elastic stress fluctuations. While this second category of models is more restricted since it applies only to materials with brittle rupture features, it offers a framework that can be interestingly and importantly extended to the case of heterogeneous materials. Models will be discussed in the light of recent experimental works.
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Loïc Vanel, Sergio Ciliberto, Pierre-Philippe Cortet, Stéphane Santucci. Time-dependent rupture and slow crack growth: elastic and viscoplastic dynamics. Journal of Physics D: Applied Physics, IOP Publishing, 2009, 42 (21), pp.214007. ⟨10.1088/0022-3727/42/21/214007⟩. ⟨hal-01729166⟩

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