Title :
Acoustic wave propagation in continuous functionally graded plates
Author :
Lefebvre, J.E. ; Zhang, V. ; Sadaune, V. ; Gryba, T. ; Ouaftouh, M.
Author_Institution :
Dept. OAE, Valenciennes Univ., France
Abstract :
The propagation of guided waves in continuous functionally graded plates (FGPs) is studied by using Legendre polynomials. Dispersion curves, power and field profiles are easily obtained. Numerical results are given for a graded plate. It is felt that the presented method could be of quite practical interest either in nondestructive testing of FGPs to identify the best inspection strategies or, by means of a numerical inversion algorithm, for determination of through-thickness gradients in material parameters.
Keywords :
Legendre polynomials; functionally graded materials; surface acoustic waves; ultrasonic dispersion; ultrasonic materials testing; ultrasonic propagation; Lamb-like modes; Legendre polynomials; acoustic field profiles; acoustic wave propagation; boundary conditions; continuous functionally graded plates; dispersion curves; guided waves; inspection strategies; material parameters; nondestructive testing; numerical inversion algorithm; orthonormal functions; power profiles; through-thickness gradients; Acoustic propagation; Acoustic waves; Boundary conditions; Composite materials; Inspection; Material properties; Materials testing; Nondestructive testing; Polynomials; Stress;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849531
