Delayed failure prediction of SiC-based bundles: the impact of sampling size
Langue
EN
Article de revue
Ce document a été publié dans
International Journal of Fatigue. 2020-05-01, vol. 138, p. 105694
Résumé en anglais
The present paper deals with sampling size related uncertainties for the delayed failure of SiC-based bundles under static fatigue condition. It is shown that 75 tests are required to assess the median lifetime with a 20% ...Lire la suite >
The present paper deals with sampling size related uncertainties for the delayed failure of SiC-based bundles under static fatigue condition. It is shown that 75 tests are required to assess the median lifetime with a 20% error at a given stress/temperature. Extending this work at different stress highlights the error on prediction parameters (classical power law model) for different testing strategies: stress scanning with little repetition or conversely extensive repetition at few stresses. It is shown, for a fixed total number of tests, a mixed approach (inconstant number of repetition) should be preferred to reduce the error.< Réduire
Mots clés en anglais
SiC fiber
Lifetime
Mechanical property
Sample number
Static fatigue
Unités de recherche