.... Piezoceramics are brittle and susceptible to cracking. Because the reliability of these devices is important, there has been tremendous interest in studying their fracture and failure behavior. Electrically induced mechanical cracking is a serious degradation phenomenon, which is not yet fully understood...

... thermal loading beyond an estimated load. In view of such a background, this paper deals with a control problem of a thermal stress in a multilayer composite circular disk consisting of a structural layer and piezoceramic layers with concentrically arranged electrodes. When a heating temperature...

... the crack opening is, the different levels of the applied mechanical loading yielding different levels of crack opening may change the relations between the failure mechanism and the applied electric field. 30 10 2006 04 02 2007 11 01 2008 piezoceramics interface phenomena cracks...

... to inelastic processes increases from negative to positive electric fields by up to 100%. For the corresponding nonlinear electric energy change during crack growth, only a rough estimate is performed. 15 04 2004 19 03 2007 lead compounds piezoceramics surface cracks piezoelectricity...

... pairs of auxiliary (torsion/bending) functions in two variables. These pairs of functions satisfy the so-called coupled Neumann problem (CNP) in the cross-sectional domain. In the limit “elastic” case the CNP transforms to the Neumann problem, for a beam made of a poled piezoceramics the CNP...

... lead compounds barium compounds piezoceramics cracks permittivity electromechanical effects 28 04 2006 27 09 2006 Now, we study the present problems in more detail to obtain the full-field solution. In order to solve the nonhomogeneous Hilbert Eq. 13 , it is convenient...

... 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...

... and Environmental Engineering, University of California—Santa Barbara, Santa Barbara, CA 93106-5070, and will be accepted until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS . 03 September 2003 17 March 2004 27 01 2005 piezoceramics...

... in the ASME JOURNAL OF APPLIED MECHANICS . 17 October 2002 30 January 2004 07 09 2004 piezoceramics cracks Piezoelectric ceramics have been widely used in actuators, sensors and other components. In these devices, the most cost-efficient geometry is that of the cofired...

.... piezoceramics cracks fracture 04 June 2002 18 September 2003 07 09 2004 Contributed by the Applied Mechanics Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF APPLIED MECHANICS . Manuscript received by the ASME Applied Mechanics...

.... 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...

...X.-F. Li; K. Y. Lee 05 01 2004 piezoceramics crack-edge stress field analysis perturbation theory In studying crack problems in a piezoelectric material, many crack models have been proposed and some fracture criteria have been established. The author of 1 presented a new...

...) h X ≔ h 0 , | X | < a 0 , | X | > a , and (2) F X , h X ≔ E ˜ X X , h X − E ˜ X a X , h X . crack-edge stress field analysis piezoceramics electrostatics 05 01...

... is obtained numerically for a specific piezoceramic of technological interest, namely PZT-4. For the special problem of a uniformly rotating solid cylinder with traction-free surface and zero applied electric charge, explicit closed-form solutions are obtained. It is shown that for certain piezoelectric...

... Barbara, Santa Barbara, CA 93106-5070, and will be accepted until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS . 28 Mar 2002 26 Aug 2002 27 03 2003 piezoceramics crack-edge stress field analysis fracture mechanics fracture...

... until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS . 27 April 2001 05 December 2001 20 06 2002 boundary-value problems permittivity piezoceramics tensors inclusions stress analysis lead compounds The mechanical...

...X. Zhou; A. Chattopadhyay, Mem. ASME A new theory is developed to model the hysteresis relation between polarization and electric field of piezoceramics. An explicit formulation governing the hysteresis is obtained by using saturation polarization, remnant polarization, and coercive electric field...

... 1997 26 November 1999 crack-edge stress field analysis composite material interfaces piezoceramics elasticity If a pair of parallel electrode-ceramic cracks (as shown in Fig. 1 ( b )) are considered, it follows from ( 19 ), ( 21 ), ( 22 ) that (47) B I f I...

... piezoelectric materials piezoceramics electric strength indentation mechanical strength lead compounds barium compounds calcium compounds Weibull distribution Piezoelectric materials have been investigated extensively from the atomic and continuum point of view by many investigators. The early...