Comparison of embedded, surface bonded and reusable piezoelectric transducers for monitoring of concrete structures

Bahador Sabet Divsholi; Yaowen Yang

doi:10.1117/12.881471

18 April 2011 Comparison of embedded, surface bonded and reusable piezoelectric transducers for monitoring of concrete structures

Bahador Sabet Divsholi, Yaowen Yang

Author Affiliations +

Proceedings Volume 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011; 798151 (2011) https://doi.org/10.1117/12.881471
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

Piezoelectric lead zirconate titanate (PZT) transducers have been used for health monitoring of various structures over the last two decades. There are three methods to install the PZT transducers to structures, namely, surface bonded, reusable setup and embedded PZTs. The embedded PZTs and reusable PZT setups can be used for concrete structures during construction. On the other hand, the surface bonded PZTs can be installed on the existing structures. In this study, the applicability and limitations of each installation method are experimentally studied. A real size concrete structure is cast, where the surface bonded, reusable setup and embedded PZTs are installed. Monitoring of concrete hydration and structural damage is conducted by the electromechanical impedance (EMI), wave propagation and wave transmission techniques. It is observed that embedded PZTs are suitable for monitoring the hydration of concrete by using both the EMI and the wave transmission techniques. For damage detection in concrete structures, the embedded PZTs can be employed using the wave transmission technique, but they are not suitable for the EMI technique. It is also found that the surface bonded PZTs are sensitive to damage when using both the EMI and wave propagation techniques. The reusable PZT setups are able to monitor the hydration of concrete. However they are less sensitive in damage detection in comparison to the surface bonded PZTs.

Citation Download Citation

Bahador Sabet Divsholi and Yaowen Yang "Comparison of embedded, surface bonded and reusable piezoelectric transducers for monitoring of concrete structures", Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 798151 (18 April 2011); https://doi.org/10.1117/12.881471

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