Long-Term Reliability of Brittle Materials: The Issue of Crack Arrest

Abstract : In structures containing brittle materials, residual and/or heterogenous stresses may prevent cracks to propagate up to failure. Consequently, for such structures, crack arrest has to be accounted for and a weakest link hypothesis may not be applicable. A probabilistic crack propagation model is derived to describe instantaneous or delayed arrest phenomena. A time-dependent regime is induced by slow crack growth experienced by ceramics and glasses. A general expression is obtained in which instantaneous up to infinite propagation times can be modelled in a unified way. The results are illustrated on a case study dealing with propagation of cracks in a thin walled tube submitted to a temperature gradient through its thickness. Different types of propagation/arrest regimes can be identified.
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Contributor : François Hild <>
Submitted on : Monday, September 20, 2004 - 5:35:32 PM
Last modification on : Thursday, July 25, 2019 - 2:58:08 PM
Long-term archiving on : Thursday, April 1, 2010 - 3:03:09 PM

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  • HAL Id : hal-00002907, version 1

Citation

Yann Charles, Stéphane Roux, François Hild. Long-Term Reliability of Brittle Materials: The Issue of Crack Arrest. Journal of Engineering Materials and Technology, American Society of Mechanical Engineers, 2003, 125, pp.333-340. ⟨hal-00002907⟩

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