• Corpus ID: 252715791

Lamb modes and Born approximation for small shape defects inversion in elastic plates

  title={Lamb modes and Born approximation for small shape defects inversion in elastic plates},
  author={Eric Bonnetier and Ang{\`e}le Niclas and Laurent Seppecher},
The aim of this work is to present theoretical tools to study wave propagation in elastic waveguides and perform multi-frequency scattering inversion to reconstruct small shape defects in a 2D and 3D elastic plate. Given surface multi-frequency wavefield measurements, we use a Born approximation to reconstruct localized defect in the geometry of the plate. To justify this approximation, we introduce a rigorous framework to study the propagation of elastic wavefield generated by arbitrary sources… 

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