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.
Highlights
Civil infrastructural systems age and deteriorate during their service life due to factors such as ageing of materials, excessive use, overloading, environmental conditions, and deficient maintenance
Structural health monitoring of civil infrastructures is of considerable importance in view of the immense loss of life and property that may result from structure failure
In order to characterize the mechanic-electrical response of composite, we only apply mechanical loading, and (1) can be rewriten as: Dm = emiSi
Summary
Civil infrastructural systems age and deteriorate during their service life due to factors such as ageing of materials, excessive use, overloading, environmental conditions, and deficient maintenance. The need for quick assessment of the state of health of civil infrastructures has necessitated research for the development of an automated, real-time, and in situ health monitoring technique This kind of technique allows the system to monitor its own structural integrity while the infrastructures are in service, and the monitoring can be performed throughout the service life of the infrastructures. Such a structural health monitoring system is useful to improve reliability and to reduce the costs of maintenance and inspection for infrastructural systems [1]. The study will help us state the nonlinear turbulence of cement-based piezoelectric composites with large mechanical boundary
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