3. Corrosion fatigue cracking

The study of the propagation stage of a corrosion fatigue crack, using fracture mechanics concepts, provides an insight into the relative importance of the propagation stage in the overall service life of a part or structure [45] . This study is all the more important as, under certain environmental and stress conditions, fatigue cracks can propagate much more rapidly than in ambient air.

The quantitative study of the propagation stage of a fatigue crack is made possible by the introduction of fracture mechanics concepts and, in particular, the stress intensity factor K, which expresses the state of stress in the vicinity of a crack. This factor is of the form : $K = σ_{N} \sqrt{a} f$

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Corrosion fatigue cracking

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page Corrosion fatigue

Conclusion

Bibliography

Text references

(1) - DUQUETTE (D.J.) - A review of aqueous corrosion fatigue (Une revue de la fatigue-corrosion aqueuse). - Corrosion Fatigue Chemistry Mechanics and Microstructure NACE-2. National Association of Corrosion Engineers, 1973, p. 12-24.
(2)...

Standardization

AFNOR

Produits sidérurgiques. Essais de fatigue. Principes généraux. - NF A 03-400 - 08-1983
Produits sidérurgiques. Essais de fatigue par charge axiale. - NF A 03-401 - 08-1983
Produits sidérurgiques. Essais de fatigue par flexion rotative. - NF A 03-402 - 08-1983

American Standard of Testing Materials

Standard test method for measurement of fatigue crack growth rates. - ASTM...

Theses

- http://www.sudoc.abes.fr
HERMS (E.) - Étude fractographique de la corrosion sous contrainte et de la fatigue-corrosion d'alliages austénitiques : incidence sur l'expertise et les mécanismes. - 2000 Université...