Abstract
A method for evaluating the interaction of wing cracks in 2-D and 3-D is presented. The method utilizes the assumption that the wing crack can be represented by its extensions and the interaction is solved using a superposition method presented by Kachanov. The method is applied to arrays of parallel initial cracks to determine the critical crack array orientations and assess whether the coalescence of closely-spaced small cracks causing a shear-like failure observed in 2-D is possible in 3-D. The results show that the shear failure can be achieved also in 3-D, but not with such an instability as in 2-D.
| Original language | English |
|---|---|
| Pages (from-to) | 17-30 |
| Journal | Engineering Fracture Mechanics |
| Volume | 200 |
| DOIs | |
| Publication status | Published - Sept 2018 |
| MoE publication type | A1 Journal article-refereed |
Funding
The research and the preparation of the manuscript have been supported by the Academy of Finland [grant 268925 ] and VTT Technical Research Centre of Finland.
Keywords
- brittle fracture
- shear fracture
- crack interaction
- wing crack