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Article Dans Une Revue Applied Physics Letters Année : 2014

Probing material nonlinearity at various depths by time reversal mirrors

Cedric Payan
M. Griffa
  • Fonction : Auteur
P. Schuetz
  • Fonction : Auteur

Résumé

In this letter, the time reversal mirror is used to focus elastic energy at a prescribed location and to analyze the amplitude dependence of the focus signal, thus providing the nonlinearity of the medium. By varying the frequency content of the focused waveforms, the technique can be used to probe the surface, by penetrating to a depth defined by the wavelength of the focused waves. The validity of this concept is shown in the presence of gradual and distributed damage in concrete by comparing actual results with a reference nonlinear measurement and X ray tomography images.
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Dates et versions

hal-00976610 , version 1 (10-04-2014)

Identifiants

Citer

Cedric Payan, T. J. Ulrich, P. Y. Le Bas, M. Griffa, P. Schuetz, et al.. Probing material nonlinearity at various depths by time reversal mirrors. Applied Physics Letters, 2014, 104, pp.144102. ⟨10.1063/1.4871094⟩. ⟨hal-00976610⟩
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