2D finite element modeling of the non-collinear mixing method for detection and characterization of closed cracks

Blanloeuil, P, Meziane, A and Bacon, C 2015, '2D finite element modeling of the non-collinear mixing method for detection and characterization of closed cracks', NDT and E International, vol. 76, pp. 43-51.


Document type: Journal Article
Collection: Journal Articles

Title 2D finite element modeling of the non-collinear mixing method for detection and characterization of closed cracks
Author(s) Blanloeuil, P
Meziane, A
Bacon, C
Year 2015
Journal name NDT and E International
Volume number 76
Start page 43
End page 51
Total pages 9
Publisher Elsevier
Abstract The non-collinear mixing technique is applied for detection and characterization of closed cracks. The method is based on the nonlinear interaction of two shear waves generated with an oblique incidence, which leads to the scattering of a longitudinal wave. A Finite Element model is used to demonstrate its application to a closed crack. Contact acoustic nonlinearity is modeled using unilateral contact law with Coulomb׳s friction. The method is shown to be effective and promising when applied to a closed crack. Scattering of the longitudinal wave also enables us to image the crack, giving its position and size.
Subject Acoustics and Noise Control (excl. Architectural Acoustics)
Numerical Modelling and Mechanical Characterisation
Dynamics, Vibration and Vibration Control
Keyword(s) Non-colinear mixing
Nonlinear acoustics
Contact acoustic nonlinearity
Finite element method
Closed crack
DOI - identifier 10.1016/j.ndteint.2015.08.001
Copyright notice © 2015 Elsevier Ltd. All rights reserved.
ISSN 0963-8695
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