Examination and Prediction of Corrosion Fatigue Damage and Inhibition

Examination and Prediction of Corrosion Fatigue Damage and Inhibition

Sarah E.GalyonDorman

Justin W. Rausch

Saravanan Arunachalam

Scott A. Fawaz

SAFE Inc.

Background

Current environmentally assisted fatigue testing methodologies do not account for nucleation from corrosion damage

The DoD is moving to ban the use of chromates as a protection system for DoD assets1

The protection chromate provides to fatigue crack growth needs to be fully characterized so replacement coatings can be properly assessed and there is no unexpected loss of corrosion fatigue protection as chromate is phased out

Current coating qualification methods do not account for mechanical damage

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