Abstract
Finite element models of thermally oxidised nuclear graphite were generated using three-dimensional high-resolution tomography images. Bulk tensile strength was then evaluated using a smeared-crack model, which shows an exponential decay in the bulk strength with increasing pore volume. The finite element results were in good agreement with radiolytic oxidation experiments. A stochastic analysis using a modified Weibull theory was also performed to describe the evolution of the failure process with increasing load for different levels of porosities.
Original language | English (US) |
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Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Journal of Nuclear Materials |
Volume | 381 |
Issue number | 1-2 |
DOIs | |
State | Published - Oct 31 2008 |