Study of acoustic signatures for non-spherical curved acoustic lens - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 1993

Study of acoustic signatures for non-spherical curved acoustic lens

Résumé

In this paper, we first evaluate the Acoustical Material Signature used in acoustic microscopy by a method based on the Rayleigh-Sommefeld field integration. Different to the conventional geometry ray or Fourier optics method the field integration method needs no approximate conditions and can take into consideration the near field phenomenon and the diffraction effect in an acoustic lens. Moreover, with this model, the lens can have any special designed geometry. Using this method, we compared the calculated results with that of the experimental ones obtained from a three-layered bonding structure, the concordance is very significant. We then take the case of a conical ring lens which is convenient to the selected Lamb wave excitation and detection for a multilayered structure. A physical model is given to explain the fringes obtained in V(z) curve using such a lens
Fichier non déposé

Dates et versions

hal-03811459 , version 1 (11-10-2022)

Identifiants

Citer

Wei-Jiang Xu, Mohamed Ourak, Mohammadi Ouaftouh, Bertrand Nongaillard. Study of acoustic signatures for non-spherical curved acoustic lens. Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, Oct 1993, Cannes, France. pp.1413-1416 vol.3, ⟨10.1109/ultsym.1994.401856⟩. ⟨hal-03811459⟩
13 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More