A modification to the model of Weir ef al. for surface reaction and transport controlled fatigue crack growth has been developed to explicitly account for the effect of load ratio on environmentally assisted fatigue crack growth. Load ratio was found to affect principalfy gas transport to the crack
Effect of mixed mode loading on the crack propagation direction in hydrogen assisted cracking
โ Scribed by Chen Xiaolie; Nakasa Keijiro
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 663 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0013-7944
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The variation of the direction or, of crack propagation in mixed mode with the angle j? of the inclined crack is shown to fit very well to the variation of @, of the bisector of the angle of directions S,, and ff,, of max o, and sufficiently well to that of @,, bisector of the angle of directions &
The determination of the direction 6, of crack propagation in mixed-mode brittle fracture is shown that can be based on the maximization of principal stresses. On the other hand, the corresponding load at fracture can be determined by summing up the projections of normal and tangential components al