Comments on “A physical model and constitutive equations for complete characterization of S-N fatigue behavior of metals”

DOI	Trouver le DOI : https://doi.org/10.1016/j.scriptamat.2017.01.014
Auteur	Rechercher : Wu, Xijia¹
Affiliation	Conseil national de recherches du Canada. Aérospatiale
Format	Texte, Article
Sujet	fatigue crack initiation; fatigue crack nucleation; s-n curve
Résumé	In a recent paper published in Acta Materialia [Ravi Chandran, Acta Materialia 121 (2016) 85–103], the author assumed that crack initiates instantaneously to a size proportional to the applied stress minus the fatigue endurance limit over the range between the fatigue limit and the ultimate strength of the material. However, this relationship has never been proven experimentally. It contradicts to the understanding of fatigue crack nucleation from accumulation of persistent slip bands, which is a process, not an instantaneous event, as supported by numerous experimental observations. Therefore, the proposed S-N curve relationship based on instantaneous “crack initiation” should not be deemed as a “physical model”.
Date de publication	2017-03-17
Maison d’édition	Elsevier
Dans	Scripta Materialia 133 : 113–.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	23002404
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	88291aa9-1466-4ad2-94a7-04c471930c14
Enregistrement créé	2017-10-27
Enregistrement modifié	2020-03-16