| Issue |
Rev. Met. Paris
Volume 101, Number 12, December 2004
Science et Génie des Matériaux
|
|
|---|---|---|
| Page(s) | 1087 - 1099 | |
| DOI | https://doi.org/10.1051/metal:2004112 | |
| Published online | 06 January 2005 | |
Multiple cracking under thermal fatigue
Tests were performed on austenitic stainless steels. In order to investigate thermal fatigue resistance of quasi-structural specimens, test facilities enforcing temperature variations similar to those found under the operative conditions have been developed. Multiple cracking networks similar to those detected during in-service inspections have been reproduced. Experiments and simulations deal with crack initiation and crack growth. In the case of multiple cracking simulation, a Skelton's modelling has been used. A shielding effect between cracks is evidenced. It leads to a dramatic reduction of crack growth rate. Such effect is also crucial for the crack network stability under additional loading.
© La Revue de Métallurgie, 2004
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