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Influence of polarization on two unequal semi-permeable cracks in a piezoelectric media

Influence of polarization on two unequal semi-permeable cracks in a piezoelectric media In this paper, the influence of arbitrary poling direction on two unequal semi-permeable cracks in a piezoelectric media is studied. Stroh’s formalism and complex variable techniques are used to formulate the problem. Closed form analytic expressions are derived for crack opening displacement (COD), crack opening potential drop (COP), intensity factors (IFs) and energy release rates (ERRs). A numerical case study is presented for a poled PZT-5H ceramic plate to investigate the effect of mechanical and electric-displacement loads on IFs and ERRs. Moreover, the effect of arbitrary poling direction on IFs and ERRs is presented graphically. It is observed that IFs and ERRs are maximum when poling direction is perpendicular to the cracks faces. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Strength, Fracture and Complexity iospress

Influence of polarization on two unequal semi-permeable cracks in a piezoelectric media

Strength, Fracture and Complexity , Volume 10 (3-4): 16 – Jan 1, 2018

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Publisher
IOS Press
Copyright
Copyright © 2017 © 2017 – IOS Press and the authors. All rights reserved
ISSN
1567-2069
eISSN
1875-9262
DOI
10.3233/SFC-170205
Publisher site
See Article on Publisher Site

Abstract

In this paper, the influence of arbitrary poling direction on two unequal semi-permeable cracks in a piezoelectric media is studied. Stroh’s formalism and complex variable techniques are used to formulate the problem. Closed form analytic expressions are derived for crack opening displacement (COD), crack opening potential drop (COP), intensity factors (IFs) and energy release rates (ERRs). A numerical case study is presented for a poled PZT-5H ceramic plate to investigate the effect of mechanical and electric-displacement loads on IFs and ERRs. Moreover, the effect of arbitrary poling direction on IFs and ERRs is presented graphically. It is observed that IFs and ERRs are maximum when poling direction is perpendicular to the cracks faces.

Journal

Strength, Fracture and Complexityiospress

Published: Jan 1, 2018

References