Simulation of Lamb wave propagation for the characterization of complex structures

2003 ◽  
Vol 50 (4) ◽  
pp. 441-448 ◽  
Author(s):  
V. Agostini ◽  
P.P. Delsanto ◽  
I. Genesio ◽  
D. Olivero
Keyword(s):  
Wave Propagation ◽  
Lamb Wave ◽  
Complex Structures ◽  
Lamb Wave Propagation

Characterization of acoustic Lamb wave propagation in polycrystalline diamond films by laser ultrasonics

2000 ◽  
Vol 88 (5) ◽  
pp. 2984-2993 ◽  
Author(s):  
Michael D. Whitfield ◽  
Barbara Audic ◽  
Colm M. Flannery ◽  
Liam P. Kehoe ◽  
Gabriel M. Crean ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Lamb Wave ◽  
Diamond Films ◽  
Polycrystalline Diamond ◽  
Laser Ultrasonics ◽  
Lamb Wave Propagation

Wave Propagation in a Micropolar Elastic Plate with Voids

2005 ◽  
Vol 11 (6) ◽  
pp. 849-863 ◽  
Author(s):  
S. K. Tomar
Keyword(s):  
Wave Propagation ◽  
Attenuation Coefficient ◽  
Elastic Material ◽  
Elastic Plate ◽  
Lamb Wave ◽  
Specific Model ◽  
Present Formulation ◽  
Numerical Computations ◽  
Lamb Wave Propagation ◽  
Symmetric And Antisymmetric Modes

Frequency equations are obtained for Rayleigh–Lamb wave propagation in a plate of micropolar elastic material with voids. The thickness of the plate is taken to be finite and the faces of the plate are assumed to be free from stresses. The frequency equations are obtained corresponding to symmetric and antisymmetric modes of vibrations of the plate, and some limiting cases of these equations are discussed. Numerical computations are made for a specific model to solve the frequency equations for symmetric and antisymmetric modes of propagation. It is found that both modes of vibrations are dispersive and the presence of voids has a negligible effect on these dispersion curves. However, the attenuation coefficient is found to be influenced by the presence of voids. The results of some earlier works are also deduced from the present formulation.

Influence of damaged area on lamb wave propagation in composite plate

2004 ◽  
Vol 35 (2) ◽  
pp. 85-93 ◽  
Author(s):  
Cunli Wu ◽  
Xiasheng Sun ◽  
Shihui Duan ◽  
Tong Fang
Keyword(s):  
Wave Propagation ◽  
Lamb Wave ◽  
Composite Plate ◽  
Lamb Wave Propagation
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