Influence of corrosion damage on fatigue crack initiation

Report (1975)

Authors

W.G.J. 't Hart

A. Nederveen

J.H. Nassette

A. van Wijk

Aluminum alloys Flight simulation Loads Fatigue life Crack initiation Fatigue tests Pitting

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Published Date

31-05-1975

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Abstract

The influence of previous corrosion on fatigue crack initiation has been determined. Cylindrical specimens and flat specimens with a central hole of the aluminium alloy T075-T6 were corroded in a 3.5 % NaC1 solution. The cylindrical specimens were tested under constant amplitude loading while for the specimens with a central hole a block programme loading was used. It appeared that the reduction in fatigue life was caused by fatigue crack initiation in an early stage, from corrosion pits.

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