Variability of Fatigue Crack Growth Properties for 2024-T3 Aluminium Alloy

摘要

In this report a comparison was made between 2024-T3 aluminium alloy sheet crackgrowth obtained from two NASA reports (from 1958 and 1959) and an NLR report (from 1966) to examine batch to batch variability of fatigue crack growth rates. Two other NASA reports (from 1969 and 1988), which refer to test specimens from the same batch of material, were used to determine if there is any long term natural ageing effect on fatigue crack growth properties.