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Journal Articles EPL - Europhysics Letters Year : 2006

Subcritical crack growth in fibrous materials

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Pierre-Philippe Cortet
Loïc Vanel
Sergio Ciliberto
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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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Dates and versions

ensl-00156825 , version 1 (22-06-2007)

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Stéphane Santucci, Pierre-Philippe Cortet, Stéphanie Deschanel, Loïc Vanel, Sergio Ciliberto. Subcritical crack growth in fibrous materials. EPL - Europhysics Letters, 2006, 74 (4), pp.595. ⟨10.1209/epl/i2005-10575-2⟩. ⟨ensl-00156825⟩
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