Characterization of concrete stress by measuring dissipation factors of embedded piezoelectric ceramic disc

Yu Chen; Yumei Wen; Ping Li

doi:10.1117/12.599838

17 May 2005 Characterization of concrete stress by measuring dissipation factors of embedded piezoelectric ceramic disc

Yu Chen, Yumei Wen, Ping Li

Proceedings Volume 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; (2005) https://doi.org/10.1117/12.599838
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

Abstract

For a novel method of characterize stress of concrete structure by measuring embedded ceramic disc, we establish a model of a piezoelectric ceramic disc under the situation mentioned above, and then the relationships between the complex coefficients and the equivalent circuit parameters are obtained. Derived from the piezoelectric equations with complex coefficients, the dissipation factors are related to the equivalent circuit parameters. Experimental results show that there are linear relationships between most of the equivalent parameters and the loadings applied on the concrete structure. The mechanisms of the results are discussed by use of the theory of moving domain walls and point defects. The results also support the method of estimating the stress by measuring the value of equivalent circuit parameters of piezoelectric ceramic.

Citation Download Citation

Yu Chen, Yumei Wen, and Ping Li "Characterization of concrete stress by measuring dissipation factors of embedded piezoelectric ceramic disc", Proc. SPIE 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (17 May 2005); https://doi.org/10.1117/12.599838

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