Process-Zone Length From Image Analysis

Published on Jun 26, 2011
Qing Lin11
Estimated H-index: 11
(PKU: Peking University),
Joseph F. Labuz32
Estimated H-index: 32
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Crack propagation is studied in a geomaterial subject to weakening by the presence of water, which dissolves a mineral component. Such weakening is common when tensile microcracks develop, constituting sites of enhanced mineral dissolution. A previous concept is adopted of reactive chemo-plasticity, with the yield limit depending on the mineral mass dissolved, causing chemical softening. The dissolution is described by a rate equation and is a function of variable internal specific surface area,...
13 CitationsSource
#1Jia Liang Le (UMN: University of Minnesota)H-Index: 18
#2Jan Eliáš (Brno University of Technology)H-Index: 10
Last. Zdeněk P. Bažant (NU: Northwestern University)H-Index: 86
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AbstractEngineering structures must be designed for an extremely low failure probability, Pf<10-6. To determine the corresponding structural strength, a mechanics-based probability distribution model is required. Recent studies have shown that quasibrittle structures that fail at the macrocrack initiation from a single representative volume element (RVE) can be statistically modeled as a finite chain of RVEs. It has further been demonstrated that, based on atomistic fracture mechanics and a stat...
16 CitationsSource