Towards quantifying the effect of pump wave amplitude on cracks in the Nonlinear Coda Wave Interferometry method - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Ultrasonics Année : 2023

Towards quantifying the effect of pump wave amplitude on cracks in the Nonlinear Coda Wave Interferometry method

Résumé

In Non-Destructive Testing and Evaluation (NDT&E), an ultrasonic method called Nonlinear Coda Wave Interferometry (NCWI) has recently been developed to detect cracks in heterogeneous materials such as concrete. The underlying principle of NCWI is that a pump wave is used to activate the crack breathing which interact with the source probe signal. The resulting signal is then measured at receiver probes. In this work, a static finite element model (FEM) is used to simulate the pump wave/crack interaction in order to quantify the average effect of the pump waves on a crack. By considering both crack opening and closure phases during the dynamic pump wave excitation, this static model aims to determine the pump stress amplitude for a given relative crack length variation due to the dynamic pump wave excitation at different amplitudes. Numerical results show, after reaching a certain stress amplitude, a linear relationship between the relative crack length variation and the equivalent static load when considering a partially closed crack at its tips. Then, numerical NCWI outputs, e.g., the relative velocity change θ and the decorrelation coefficient K d , have been calculated using a spectral element model (SEM). These results agree with previously published experimental NCWI results derived for a slightly damaged 2D glass plate.
Fichier principal
Vignette du fichier
Article1_NCWI_QS_JM_OC_FINAL5_reviewed__ver_reorganized_V2_clean_sent.pdf (3.33 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04060590 , version 1 (06-04-2023)

Identifiants

Citer

Shilin Qu, Benoit Hilloulin, Olivier Chupin, Jean-Michel Piau, Odile Abraham, et al.. Towards quantifying the effect of pump wave amplitude on cracks in the Nonlinear Coda Wave Interferometry method. Ultrasonics, 2023, 132, pp.106991. ⟨10.1016/j.ultras.2023.106991⟩. ⟨hal-04060590⟩
50 Consultations
6 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More