Dynamic Reliability Model for the Pickering Cladding Stress Corrosion Cracking Failures

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Abstract
A dynamic reliability model is used to describe test data on stress corrosion cracking failures of cladding rings cut of the Pickering post-reactor fuel This model provides an expression that fits the data points very well The main goal of the model is to take into account the in-reactor reliability drop prior to the test. An equivalent test time parameter responsible for the fuel burning is used to move the time axis origin to the left for the beginning of the test. The nonzero failure fraction at the real test beginning is supposed to exist appearing as a very large fraction of the specimens failed at the very first moments of the test.

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