Abstract
The propagation of shear horizontal waves in a porous piezoelectric composite structure is investigated analytically in this paper. A two-layer structure comprised of perfectly bonded piezoelectric layers is considered. The solution of mechanical displacement and electrical potential is found by solving the constitutive equation for a porous piezoelectric composite structure. Then the dispersion relation is derived for the wave propagation along the direction normal to layering and in the direction of layering. The results obtained from the investigation show the dependence of the wave number on the thickness of the alternative layer in piezoelectric material. Also the phase velocity has been significantly influenced by the variation of elastic constant and porosity. The results provide a theoretical framework for designing and development of underwater acoustic devices for sensing and nondestructive testing.
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Gaur, A.M., Rana, D.S. Dispersion relations for SH waves propagation in a porous piezoelectric (PZT–PVDF) composite structure. Acta Mech 226, 4017–4029 (2015). https://doi.org/10.1007/s00707-015-1443-y
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DOI: https://doi.org/10.1007/s00707-015-1443-y