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Chapitre D'ouvrage Année : 2009

Deformation of the crack front during propagation in some disordered medium: theoretical and experimental studies

Résumé

In heterogeneous disordered materials, a straight crack front experiences toughness fluctuations during its propagation that generate geometric fluctuations. Their long time statistical behavior has been studied by Lazarus et al. (JMPS, 2008) using Bueckner-Rice weight function theory. In particular, the evolution of the auto-correlation function, power spectrum and variance of the front fluctuations have been derived. The aim here is to compare these results to some experiments performed on transparent plexiglas blocks with the same apparatus as in Schmittbuhl and Maloy (PRL, 1997) by measuring the amplitude evolution of the crack front fluctuations in addition to the self-affinity roughness parameters.
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Dates et versions

hal-02378033 , version 1 (24-11-2019)

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  • HAL Id : hal-02378033 , version 1

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Nadjime Pindra, Veronique Lazarus, Jean-Baptiste Leblond, Jean Schmittbuhl, Renaud Toussaint. Deformation of the crack front during propagation in some disordered medium: theoretical and experimental studies. 12th International Conference on Fracture 2009, ICF-12, 8, , pp.6356-6364, 2009, 9781617382277. ⟨hal-02378033⟩
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