DocumentCode :
2355469
Title :
P2J-4 The Effect of Fiber Orientation on Lamb Wave Propagation in Layered Anisotropic Composite Plates
Author :
Zhang, Haiyan ; Fan, Shixuan ; Liu, Zhenqin ; Lu, Donghui ; Ta, Dean
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ.
fYear :
2006
fDate :
2-6 Oct. 2006
Firstpage :
1821
Lastpage :
1823
Abstract :
Ultrasonic Lamb wave nondestructive evaluation (NDE) is one useful mean to insure the structure integrity of fiber-reinforced composites. In order to take full advantage of the information contained in Lamb wave testing, it is very helpful to have a clear understanding on Lamb wave propagation characteristics in the nondestructive evaluation of these structures or in the analysis of their dynamic vibrations. In this work, a global matrix model is developed based on Nayfeh´s transfer matrix technique. The method provides an alternative to the transfer matrix technique and can be used on plate systems of any numbers of layers of different materials and thickness. This study concentrates on the effect of fiber orientation on Lamb wave propagation in layered anisotropic composites plates because plate structures with various degrees of macroscopic anisotropy are often encountered in the study of composite materials. The calculated dispersion curves for various fiber orientations are presented together with plots of the through-thickness particle stress component amplitudes for two fundamental modes a0 and s0. These numerical examples provide the rich characteristics of Lamb waves in anisotropic layered plates
Keywords :
anisotropic media; fibre reinforced composites; plates (structures); surface acoustic waves; ultrasonic materials testing; ultrasonic measurement; Lamb wave propagation; Lamb wave testing; Nayfeh´s transfer matrix technique; anisotropic layered plates; dispersion curves; dynamic vibrations; fiber orientation; fiber-reinforced composites; global matrix model; layered anisotropic composite plates; macroscopic anisotropy; plate structures; ultrasonic Lamb wave nondestructive evaluation; Anisotropic magnetoresistance; Composite materials; Dispersion; Frequency; Information analysis; Nondestructive testing; Optical fiber communication; Optical fiber testing; Predictive models; Stress;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
ISSN :
1051-0117
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
Type :
conf
DOI :
10.1109/ULTSYM.2006.458
Filename :
4152314
Link To Document :
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