3-3 piezoelectric metamaterial with negative and zero Poisson's ratio for hydrophones applications

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dc.contributor.author Khan, Kamran Ahmed
dc.contributor.author Khan, Muhammad Ali
dc.date.accessioned 2019-09-18T10:38:43Z
dc.date.available 2019-09-18T10:38:43Z
dc.date.issued 2018-12-18
dc.identifier http://dspace.lib.cranfield.ac.uk/handle/1826/14543
dc.identifier.citation Khan KA and Khan M. (2019) 3-3 piezoelectric metamaterial with negative and zero Poisson's ratio for hydrophones applications. Materials Research Bulletin, Volume 112, April 2019, pp.194-204 en_UK
dc.identifier.issn 0025-5408
dc.identifier.uri https://doi.org/10.1016/j.materresbull.2018.12.016
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/14543
dc.description.abstract This study presents the electromechanical properties of the 3-3 piezoelectric metamaterial based on variants of honeycomb (HC) structure. Three kinds of three-dimensional (3D) elastically anisotropic and piezoelectrically active HC structures were introduced, namely, conventional HC (3D-CHC), a re-entrant HC (3D-RE) and a semi-re-entrant HC (3D-SRE). Highly porous 3D finite element models of the mentioned three kinds of metamaterials were developed and the role of ligament orientation on their effective elastic, piezoelectric and dielectric properties was completely characterized. The intrinsic symmetry of HC structure was utilized and simplified mixed boundary conditions equivalent to periodic boundary conditions were recognized. In comparison to their bulk constituent, all the 3-3 type piezoelectric HC networks exhibited an enhanced response, especially for the longitudinal poling. The normalized figures of merit show a mild dependence on the angle θ and the underlying deformation mechanisms associated with the zero, positive and negative Poisson’s ratios. Figures of merit such as hydrostatic strain coefficient (dh" role="presentation">), the hydrostatic figure of merit (dh.gh" role="presentation">) and the acoustic impedance (Z" role="presentation">) reached their best values at small angles, i.e., θ = 30°. Longitudinally poled networks exhibited four order of magnitude increase in their hydrostatic figure of merit (foam to solid ratio >10,000) and one order of magnitude decrease in the acoustic impedance indicating their applicability for the design of hydrophones. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.subject Honey comb structures en_UK
dc.subject Metamaterials en_UK
dc.subject Cellular materials en_UK
dc.subject Electromechanical properties en_UK
dc.subject Piezoelectric materials en_UK
dc.subject Unit cell Method en_UK
dc.subject Auxetic smart structure en_UK
dc.title 3-3 piezoelectric metamaterial with negative and zero Poisson's ratio for hydrophones applications en_UK
dc.type Article en_UK
dc.identifier.cris 24416217

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