...H. M. Shodja; S. S. Moeini-Ardakani; M. Eskandari The axisymmetric problem of a concentric set of energetically consistent annular and penny-shaped cracks in an infinite piezoelectric body subjected to uniform far-field electromechanical loading is addressed. With the aid of a robust innovated...

... will still remain positive in spite of the negative D z A . 30 05 2006 13 07 2006 piezoceramics permittivity penny-shaped cracks Hankel transforms integral equations tensile strength This paper is concerned with the response of a 3D penny-shaped dielectric crack. The penny...

... element model is presented that utilizes a penny-shaped crack in the interior of such a structure or half-penny-shaped crack emanating from the edge of such a structure. Ongoing analytical and experimental work that is needed to more fully understand this arrest phenomenon and its application towards...

... penny-shaped cracks permittivity surface cracks elastic constants Hankel transforms Piezoelectric materials have been used widely in techniques, such as actuators, sensors, transducers, etc., due to the intrinsic coupling feature between elastic and electric behaviors 1 . However, a main...

.... 12, 2001. Associate Editor: K. Ravi-Chandar. 13 Dec 2000 12 Dec 2001 07 09 2004 penny-shaped cracks piezoceramics lead compounds Hankel transforms Laplace transforms Fredholm integral equations impact (mechanical) crack-edge stress field analysis The dynamic...

... . Ueda , S. , Shindo , Y. , and Astumi , A. , 1983 , “ Torsional Impact Response of a Penny-Shaped Crack on a Bimaterial Interface ,” Eng. Fract. Mech. , 18 , pp. 1059 – 1066 . Lambros , J. , and Rosakis , A. J. , 1995 , “ Shear Dominated Transonic Interfacial Crack Growth...

... and ξ → 0 , the inhomogeneity becomes a penny-shaped crack. 1 In view of Eq. ( 33 ), the eigenstrain of the crack is determined by (73) I − S : ε * = ε 0 ⇒ ε * = I − S − 1 : ε 0 . An asymptotic solution of the inverse is (74) I...

... the faces of a flat crack in an infinite space. The governing integro-differential equations of the problem are derived. It is found that exact expressions for the piezothermoelastic field for a penny-shaped crack subject to a uniform temperature can be obtained in terms of elementary functions. [S0021-8936...