The dependence of cavity-growth rate on stress triaxiality
β Scribed by P. D. Nicolaou; S. L. Semiatin; A. K. Ghosh
- Book ID
- 107440585
- Publisher
- The Minerals, Metals & Materials Society
- Year
- 2004
- Tongue
- English
- Weight
- 515 KB
- Volume
- 35
- Category
- Article
- ISSN
- 1073-5623
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π SIMILAR VOLUMES
An experimental and numerical study on ductile crack formation in tensile tests was conducted. Five different specimens including flat specimens, smooth round bars, notched bars (two types) and flat-grooved plates were investigated. Von Mises equivalent strain to crack formation, stress triaxiality,
An equation is derived for the crack growth rate under creep conditions. In the model, the propagation of a grain boundary crack is controlled by the plastic growth of cavities located in the grain boundaries ahead of the crack. It is assumed that the cavities grow by power law creep in the elastic