Volume 47, Number 4, August II 1999
|Page(s)||456 - 461|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Failure time and microcrack nucleation
Laboratoire de Physique, CNRS UMR5672, Ecole Normale Superieure de Lyon 46 allée d'Italie, 69364 Lyon, France
2 Departamento de Física, Facultad de Ciencias, Universidad de Navarra E-31080 Pamplona, Spain
Accepted: 28 June 1999
The failure time of samples of heterogeneous materials (wood, fiberglass) is studied as a function of the applied stress. It is shown that in these materials the failure time is predicted with a good accuracy by a model of microcrack nucleation proposed by Pomeau. It is also shown that the crack growth process presents critical features when the failure time is approached.
PACS: 62.20.Mk – Fatigue, brittleness, fracture, and cracks / 46.50.+a – Fracture mechanics, fatigue and cracks / 46.65.+g – Random phenomena and media
© EDP Sciences, 1999
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