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Identification haute résolution de nombres d'ondes pour la caractérisation des stratifiés anisotropes

Abstract : A new method, called HRWA for High Resolution Wavenumber Analysis is presented. It permits the wide-band and local identification of linear viscoelastic behavior of anisotropic plates. It is independent from the boundary conditions or the excitation type. Inherited from ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques) and ESTER (ESTimation of ERror) signal processing methods, it is robust and fully automated. The HRWA implementation is developped. Three main experimental sudy cases are presented. Different wave types (bending, shear and compression) are identified in the same measured field. A band-gap is identified on a honeycomb-core sandwich. The directions of fibres of a plate with spatially variable anisotropy are identified.
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https://hal.archives-ouvertes.fr/hal-01621542
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Submitted on : Monday, October 23, 2017 - 4:08:42 PM
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  • HAL Id : hal-01621542, version 1

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Pierre Margerit, Arthur Lebée, Jean-François Caron, Kerem Ege, Xavier Boutillon. Identification haute résolution de nombres d'ondes pour la caractérisation des stratifiés anisotropes. Journées Nationales sur les Composites 2017, École des Ponts ParisTech (ENPC), Jun 2017, 77455 Champs-sur-Marne, France. pp.151985. ⟨hal-01621542⟩

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