• Fundamental modes of new dispersive SH-waves in piezoelectromagnetic plate

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      https://www.ias.ac.in/article/fulltext/pram/081/05/0819-0827

    • Keywords

       

      Piezoelectromagnetics; magnetoelectric effect; acoustic SH-waves in plates; wave dispersion; fundamental modes.

    • Abstract

       

      Fundamental modes of new dispersive shear-horizontal (SH) acoustic waves propagating in the (6 mm) piezoelectromagnetic plate are studied. These SH-waves can propagate when the following boundary conditions are exploited for both the upper and lower surfaces of the plate: (1) when the surfaces are mechanically free, electrically and magnetically closed and (2) when the surfaces are mechanically free, electrically and magnetically open. The SH-waves depend on the electromagnetic wave speed $V_{\text{EM}} = 1/\sqrt{(\varepsilon \mu)}$ and can only exist when the electromagnetic constant $\alpha \neq 0$. The calculations (first evidence) were performed for the PZT-5H–Terfenol-D which is a composite with a large value of $\alpha$. The limit cases of large values of $\alpha (\alpha^{2} = 0.5\varepsilon \mu, \alpha^{2} = 0.9\varepsilon \mu)$, and $\alpha^{2} = 0.99\varepsilon \mu$) are studied because they satisfy the limitation condition of $\alpha^{2} < \varepsilon \mu$.

    • Author Affiliations

       

      A A Zakharenko1

      1. International Institute of Zakharenko Waves (IIZWs), 660037, Krasnoyarsk-37, 17701, Krasnoyarsk, Russia
    • Dates

       
  • Pramana – Journal of Physics | News

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