Ah&met-The behavior of short fatigue cracks cannot be analysed by linear elastic methods because of large scale plasticity effects as well as a breakdown in the stress intensity factor correlation of fatigue crack growth rates for crack sizes less than a millimeter in length. In the present paper a
Likelihood methods and the analysis of fatigue crack growth
β Scribed by Martin Newby
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 371 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0013-7944
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π SIMILAR VOLUMES
AbUmct-S&ess and strain Md of a propagating fatigue crack and the resulting crack opening and &sing behavior were anaiyscd. It was found that a propq&g fatigue crack was closed at ten& external Ioads due to the cyclic&y induced residual stresses. Strain range v&e AC, in the vicinity of the crack tip
Cychc pre-stress increases subsequent fatigue crack growth rate in 2024-T3Sl ahrminum ahoy. This increase in growth rate, caused by the pre-stress, and the increased rate, caused by temper embrittlement as observed by Ritchie and Knott, cannot be explained by the crack tip blunting model alone. Each
The theoretical study is advanced to describe quantitatively the crack propagation under cyclic loads. The main assumptions accepted are: (a) a crack grows by loading during every cycle, and (b) the specific dissipation energy is a material constant. The latter contains. the known concept by Irwin a