The authors present an approach to using piezoelectric layers to detect and suppress delamination in laminated composites. A quasi-3D (Q3D) finite-element model is used to study the delamination response of a laminated plate with piezoelectric layers. It is seen that the presence of delamination and its growth in an interface of the laminate can be detected by changes in the electric field on the piezoelectric layer in its vicinity. However, it is seen that the electromechanical response in the piezoelectric layer is affected only within twice the laminate thickness from the tip of the piezoelectric layer. Application of an electric field to a piezoelectric layer and the mechanical strain induced can be effectively used in delamination suppression and the technique can potentially be a useful tool in damage control in smart structures.
展开▼
