Passive piezomagnetic monitoring of structures subjected to in-service cyclic loading: Application to the detection of fatigue crack initiation and propagation
Résumé
In this research, the evolution of the piezomagnetic field of a low carbon steel under cyclic tensile stress was investigated. The objective was to
explore the correlations between piezomagnetic signal measured by a fluxgate magnetometer with progressive changes that take place during
the fatigue tests. Experiments show first that the piezomagnetic hysteresis loop changes drastically with the propagation of fatigue crack. A
multiscale magneto-elastic model of the piezomagnetic behavior allows secondly the experimental cycles evolution to be explained.
Domaines
Mécanique [physics.med-ph]
Origine : Fichiers produits par l'(les) auteur(s)