Non‐local high cycle fatigue strength criterion for metallic materials with corrosion defects. Issue 9 (3rd July 2015)

• Record Type: Journal Article
• Authors: El May, Mohamed; Saintier, Nicolas; Palin‐Luc, Thierry; Devos, Olivier; Morel, F.; Nadot, Y.; Buffière, J.‐Y.; Murakami, Y.; Brüne, M.
• Is Part Of: Fatigue & fracture of engineering materials & structures. Volume 38:Issue 9(2015:Sep.)
• Page Start: 1017
• Page End: 1025
• Publication Date: 2015-07-03
• Subjects: Materials -- Fatigue -- Periodicals; Fracture mechanics -- Periodicals; 620.1123
• DOI: 10.1111/ffe.12329
• Languages: English
• ISSNs: 8756-758X

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>This paper proposes a volumetric high cycle fatigue (HCF) strength criterion able to quantify the influence of natural corrosion pits on the fatigue limit of a martensitic stainless steel with high mechanical strength. Elastic–plastic numerical simulations were performed for real pits geometry, identified by X‐ray microtomography, to determine the local stress distribution. The analysis revealed that calculation of the fatigue strength for material with real (irregular) pit geometry required a non‐local HCF strength criterion. Such model was proposed based on the Crossland equivalent stress averaged within a volume limited by a critical distance. This criterion was validated with HCF tests on specimens with natural corrosion defects of different sizes.</p> </abstract>