Investigation of the coupled Lamb waves propagation in viscoelastic and anisotropic multilayer composites by Legendre polynomial method

被引：38
作者：
Dahmen, Souhail [1 ]
Ben Amor, Morched [1 ]
Ben Ghozlen, Mohamed Hedi [1 ]
机构：
[1] Univ Sfax, Fac Sci Sfax, Phys Mat Lab, PB 815, Sfax 3018, Tunisia
来源：
COMPOSITE STRUCTURES | 2016年 / 153卷
关键词：
Viscoelastic and anisotropic multilayer composites; Legendre orthogonal polynomial; Coupled Lamb waves; Dispersion curves; Attenuation curves; GUIDED-WAVES; ULTRASONIC-WAVES; ENERGY VELOCITY; RAYLEIGH-WAVES; CURVED PLATES; LOVE WAVES; MEDIA; DISPERSION; BEHAVIOR;
D O I：
10.1016/j.compstruct.2016.06.068
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, the attenuation of guided waves in damped multilayered arbitrary anisotropic composite laminates is investigated using a Legendre orthogonal polynomial approach. The laminate is made of the graphite-epoxy composite material with the layering sequence [0/phi/0]. The validity of the polynomial approach is illustrated through a comparison with exact solution obtained from the Stiffness matrix method and a comparison with earlier known Lamb wave solution of pure elastic multilayered plate. The dispersion and attenuation of coupled Lamb waves with different layering sequences are investigated. The viscous effect on dispersion curves is shown. The combination of frequencies and modes with minimum attenuation in high and low frequencies are determined. These frequencies and modes are of great importance for NDT applications since they play a critical role in the selection of the optimal inspection frequencies. (C) 2016 Published by Elsevier Ltd.
引用
收藏
页码：557 / 568
页数：12
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