Subcritical crack growth in fibrous materials

Abstract : We present experiments on the slow growth of a single crack in a fax paper sheet submitted to a constant force $F$. We find that statistically averaged crack growth curves can be described by only two parameters : the mean rupture time $\tau$ and a characteristic growth length $\zeta$. We propose a model based on a thermally activated rupture process that takes into account the microstructure of cellulose fibers. The model is able to reproduce the shape of the growth curve, the dependence of $\zeta$ on $F$ as well as the effect of temperature on the rupture time $\tau$. We find that the length scale at which rupture occurs in this model is consistently close to the diameter of cellulose microfibrils.
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Article dans une revue
EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2006, 74 (4), pp.595. 〈10.1209/epl/i2005-10575-2〉
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00156825
Contributeur : Loïc Vanel <>
Soumis le : vendredi 22 juin 2007 - 16:57:20
Dernière modification le : vendredi 26 octobre 2018 - 10:47:53
Document(s) archivé(s) le : jeudi 8 avril 2010 - 21:16:42

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Stéphane Santucci, Pierre-Philippe Cortet, Stéphanie Deschanel, Loïc Vanel, Sergio Ciliberto. Subcritical crack growth in fibrous materials. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2006, 74 (4), pp.595. 〈10.1209/epl/i2005-10575-2〉. 〈ensl-00156825〉

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