|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Metal-Matrix Composites Innovations, Advances and Applications: An SMD Symposium in Honor of William C. Harrigan, Jr.
||Model-based Algorithm for Damage Detection in Piezoelectric Fiber-based Composites
||Khalid M. Shalan, Tarek M. Hatem, Hesham A. Hegazi, Yehia A. Bahei-El-Din
|On-Site Speaker (Planned)
||Tarek M. Hatem
Piezoelectric Fiber-based Composites (PFCs) have a significant potential as smart materials given their superior mechanical properties over piezoelectric wafers However, the PFCs inherent heterogeneity and coupled fields offer a challenge in modelling the materials behavior.
This paper offers a multi-scale model that calculates the average properties of heterogeneous PFCs including the coupled electromechancial fields. The micromechanics solution employs transformation field analysis (TFA) scheme in which the local stresses or strains, which cannot be removed by mechanical unloading are treated as Eigen fields applied in an otherwise elastic medium.
The results from the micromechanics study is plugged into a macro-scale finite element study. A series of numerical and experimental modal analysis incorporate a simple structure in pristine condition and in various damage conditions. The electromechanical response under a sweep of frequencies is recorded along with the corresponding mode shapes.
||Planned: None Selected