Tuesday, May 23

MS18
Analytic and Experimental Characterization of Piezoelectric Materials - Part I of II

10:00 AM-12:00 PM
Room: Liberty A

For Part II, see MS25.

The capabilities of piezoelectric materials as actuators and sensors in smart structures and devices have been widely documented in applications ranging from aerospace to biomedical. The characterization of fundamental material properties in variable electric field, stress, frequency and temperature regimes has received less attention, but is necessary to fully realize the potential of these materials in high performance applications. The speakers in this minisymposium will focus on the characterization of fundamental properties of both ceramic and polymeric piezoelectric materials, including molecular structure effects and constitutive nonlinearities, through a symbiotic combination of experimental and analytic techniques.

10:00-10:25 Development and Validation of a Hysteresis Model for Piezoceramic Materials

Ralph C. Smith and Zoubeida Ounaies, Organizers

10:30-10:55 Structure and Dynamics of Piezoelectric P(VDCN-VAc): Insights from Molecular Dynamics Simulations

Kristopher E. Wise and Jeffrey A. Hinkley,, NASA Langley Research Center, USA

11:00-11:25 Simulated Macroscopic Response of Indented PbTiO_3

Gregory S. Smith and Umesh V. Waghmare, Harvard University, USA; Ellad B. Tadmore, Technion-Israel Institute of Technology, Israel; and Efthimios Kaxiras, Harvard University, USA

11:30-11:55 Nonlinear Behavior of Polycrystalline Piezoceramics

Greg P. Carman and Yevgeniy Fotinich, University of California, Los Angeles, USA