Slow crack growth : models and experiments - ENS de Lyon - École normale supérieure de Lyon Access content directly
Preprints, Working Papers, ... Year :

Slow crack growth : models and experiments

Loïc Vanel
Sergio Ciliberto
  • Function : Author
  • PersonId : 829236

Abstract

The properties of slow crack growth in brittle materials are analyzed both theoretically and experimentally. We propose a model based on a thermally activated rupture process. Considering a 2D spring network submitted to an external load and to thermal noise, we show that a preexisting crack in the network may slowly grow because of stress fluctuations. An analytical solution is found for the evolution of the crack length as a function of time, the time to rupture and the statistics of the crack jumps. These theoretical predictions are verified by studying experimentally the subcritical growth of a single crack in thin sheets of paper. A good agreement between the theoretical predictions and the experimental results is found. In particular, our model suggests that the statistical stress fluctuations trigger rupture events at a nanometric scale corresponding to the diameter of cellulose microfibrils.
Fichier principal
Vignette du fichier
review_11.pdf (1.01 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

ensl-00138774 , version 1 (27-03-2007)

Identifiers

Cite

Stéphane Santucci, Loïc Vanel, Sergio Ciliberto. Slow crack growth : models and experiments. 2007. ⟨ensl-00138774⟩
53 View
396 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More