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The propagation of B-G waves in a functional graded transversely isotropic electro-magneto-elastic half-space
Li Peng,Jin Feng *
MOE Key Laboratory for Strength and Vibration, Xi\'an Jiaotong University
*Correspondence author
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Funding: the Specialized Research Fund for the Doctoral Program of Higher Education of China （No.Grant No.20070698064）
Opened online:29 November 2010
Accepted by: none
Citation: Li Peng,Jin Feng.The propagation of B-G waves in a functional graded transversely isotropic electro-magneto-elastic half-space[OL]. [29 November 2010] http://en.paper.edu.cn/en_releasepaper/content/4392765
 
 
The B-G waves are investigated in a functionally graded transversely isotropic electro-magneto-elastic substrate in which all the parameters change exponentially along the depth direction, and the dispersion equations with respect to the phase velocity are obtained for both electromagnetically open and short conditions. It is shown that the B-G waves are dispersive owning to the inhomogeneity of the material, which is different from the pure substrate. The effect of the graded coefficient on the B-G waves are different in different electromagnetically circumstances. Meanwhile, the electro-magneto-mechanical coupling factor can be improved and the penetration depth of the B-G waves decreases, which are all because of the intervention of the functional graded material. The outcome is widely applicable and could be expected to be utilized in the design of SAW devices with high performance.
Keywords:B-G waves; the electro-magneto-mechanical coupling factor; the penetration depth
 
 
 

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