Table of Contents
Smart Materials Research
Volume 2011, Article ID 236719, 7 pages
http://dx.doi.org/10.1155/2011/236719
Research Article

Electrical Response of Cement-Based Piezoelectric Ceramic Composites under Mechanical Loadings

1Department of Civil Engineering, The Key Laboratory on Durability of Civil Engineering in Shenzhen, Shenzhen University, Shenzhen, Guangdong 518060, China
2Department of Civil Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

Received 1 December 2010; Accepted 26 January 2011

Academic Editor: C. R. Bowen

Copyright © 2011 Biqin Dong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electrical responses of cement-based piezoelectric ceramic composites under mechanical loadings are studied. A simple high order model is presented to explain the nonlinear phenomena, which is found in the electrical response of the composites under large mechanical loadings. For general situation, this nonlinear piezoelectric effect is quite small, and the composite is suitable for dynamic mechanical sensor as holding high static stability. The experimental results are consistent with the relationship quite well. The study shows that cement-based piezoelectric composite is suitable for potential application as dynamic mechanical sensor with excellent dynamic response and high static stability.