Identification of a crack propagation law by digital image correlation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Fatigue Année : 2012

Identification of a crack propagation law by digital image correlation

Florent Mathieu
François Hild

Résumé

It is proposed to use digital image correlation (DIC) to identify parameters governing crack propagation of commercially pure titanium. To achieve this goal, crack tip location, stress intensity factor, T-stress and plastic zone size are sought. Most of the DIC approaches are based upon local analyses of displacements, and their subsequent projection onto a set of mechanically relevant fields. It is proposed to perform these two sequential steps in a unique (and integrated) way, and to compare the results with a global approach to DIC with subsequent post-processing. A priori performances of two global approaches are compared, and a propagation law is identified form the series of raw images of a fatigue test on commercially pure titanium with the integrated approach that yields better results.
Fichier principal
Vignette du fichier
IJFa2012-ccsd.pdf (1.47 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00694317 , version 1 (04-05-2012)

Identifiants

Citer

Florent Mathieu, François Hild, Stéphane Roux. Identification of a crack propagation law by digital image correlation. International Journal of Fatigue, 2012, 36, pp.146-154. ⟨10.1016/j.ijfatigue.2011.08.004⟩. ⟨hal-00694317⟩
169 Consultations
1501 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More