Abstract
Abstract— Advances in manufacturing techniques and improvements in non‐destructive inspection procedures have reduced the size of initial defects in fatigue‐critical components to the scale of the microstructure. Unfortunately, the growth of these so‐called short fatigue cracks is not properly characterised by conventional linear elastic or elastic‐plastic fracture mechanics. However, the Navarro‐de los Rios crack growth model does account for many aspects of their growth and has proved successful in predicting fatigue life of medium carbon and C‐Mn steels. In consequence, the growth of short fatigue cracks in commercially pure aluminium, under fully reversed uniaxial loading, has been studied, using a plastic replication technique and modelled, using the Navarro‐de los Rios crack growth equation. The predicted lifetimes are in good agreement with the actual experimental lifetimes, and compare favourably with predictions based on two previously reported crack growth models.
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