Abstract
The results of fracture toughness tests on a high strength steel 300m are presented. These results show (i) that in the presence of through-thickness cracks the toughness remains constant down to (a/W)-ratios as low as 0.01 and failure loads up to 0.85σy, and (ii) that the material is more resistant to crack growth when the cracks are semi-elliptical in shape, giving a toughness value which is almost 25 per cent higher than the through-thickness one. Three independent stress analyses are used to obtain stress intensity values for the semi-elliptical cracks and additional confirmation of the increase in toughness comes from stretch zone measurements.
| Original language | English |
|---|---|
| Pages (from-to) | 191-200 |
| Number of pages | 10 |
| Journal | Journal of the Mechanics and Physics of Solids |
| Volume | 28 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - Aug 1980 |
Keywords
- steel
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King, J. E., & Knott, J. F. (1980). Effects of crack length and shape on the fracture toughness of a high strength steel 300m. Journal of the Mechanics and Physics of Solids, 28(3-4), 191-200. https://doi.org/10.1016/0022-5096(80)90003-4