Sg. Pantelakis et al., FATIGUE-CRACK GROWTH-RETARDATION ASSESSMENT OF 2024-T3 AND 6061-T6 ALUMINUM SPECIMENS, Theoretical and applied fracture mechanics, 22(1), 1995, pp. 35-42
A fatigue crack growth retardation model is developed. It considers a
strip plastic zone with material hardening effect which is taken as on
e of the basic mechanisms controlling fatigue crack growth. Crack grow
th is treated incrementally and corresponds to the failure of material
elements ahead of an existing crack after a certain critical number o
f low cycle fatigue. Computed curves are correlated to test data obtai
ned from the 2024-T3 and 6061-T6 aluminium specimens. Deviations from
test data increase with increasing crack length.