Analysis of the impedance resonance of piezoelectric multi-fiber composite stacks

S. Sherrit; A. Djrbashian; S. C. Bradford

doi:10.1117/12.2009056

3 April 2013 Analysis of the impedance resonance of piezoelectric multi-fiber composite stacks

S. Sherrit, A. Djrbashian, S. C. Bradford

Proceedings Volume 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013; 868904 (2013) https://doi.org/10.1117/12.2009056
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

Multi-Fiber Composites^™ (MFC’s) produced by Smart Materials Corp behave essentially like thin planar stacks where each piezoelectric layer is composed of a multitude of fibers. We investigate the suitability of using previously published inversion techniques [9] for the impedance resonances of monolithic co-fired piezoelectric stacks to the MFC^™ to determine the complex material constants from the impedance data. The impedance equations examined in this paper are those based on the derivation by Martin [5,6,10]. The utility of resonance techniques to invert the impedance data to determine the small signal complex material constants are presented for a series of MFC’s. The technique was applied to actuators with different geometries and the real coefficients were determined to be similar within changes of the boundary conditions due to change of geometry. The scatter in the imaginary coefficient was found to be larger. The technique was also applied to the same actuator type but manufactured in different batches with some design changes in the non active portion of the actuator and differences in the dielectric and the electromechanical coupling between the two batches were easily measureable. It is interesting to note that strain predicted by small signal impedance analysis is much lower than high field stains. Since the model is based on material properties rather than circuit constants, it could be used for the direct evaluation of specific aging or degradation mechanisms in the actuator as well as batch sorting and adjustment of manufacturing processes.

Citation Download Citation

S. Sherrit, A. Djrbashian, and S. C. Bradford "Analysis of the impedance resonance of piezoelectric multi-fiber composite stacks", Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 868904 (3 April 2013); https://doi.org/10.1117/12.2009056

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available