stochastic model for fatigue crack propagation is proposed in consideration of random propagation resistance. It is based on Paris-Erdogan's propagation law of fatigue crack. By adding Gaussian white noise to the propagation resistance, the propagation law is randomized. A stochastic differential eq
A stochastic damage accumulation model for creep crack propagation
โ Scribed by Ihara Chiaki; Kato Hisaatsu
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 401 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0013-7944
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โฆ Synopsis
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 suggests an extensive applicability of the present model. On these theoretical bases, it is concluded that the creep crack propagation rate is proportional to the process region size.
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