A model is developed for damage produced by the growth of isolated grain boundary cavities under power law creep. This damage model is combined with the small scale yielding stress and strain fields to predict the damage ahead of a stationary and a steadily propagating crack tip in an elastic-power
A coupled damage model for creep
β Scribed by M. K. Samal; B. K. Dutta; H. S. Kushwaha
- Book ID
- 107682997
- Publisher
- Springer-Verlag
- Year
- 2010
- Tongue
- English
- Weight
- 461 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0972-2815
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Previously a stochastic model for damage accumulation was proposed to obtain an expression for the fatigue crack propagation rate. In this paper, the model is used in order to derive the creep crack propagation law. The theoretical results show a good agreement with the experimental data. This sugge
Abatmct-A new continuum damage mechanics-based model is proposed to describe cyclic creep behavior of selected engineering materials under complicated loading conditions. The loading conditions involve both load holding time and load dwell time. Besides the damage parameter used by most continuum da