Low-cost passive sensors for monitoring corrosion in concrete structures

Ali E. Abu Yosef; Praveenkumar Pasupathy; Sharon L. Wood; Dean P. Neikirk

doi:10.1117/12.879893

19 April 2011 Low-cost passive sensors for monitoring corrosion in concrete structures

Ali E. Abu Yosef, Praveenkumar Pasupathy, Sharon L. Wood, Dean P. Neikirk

Proceedings Volume 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011; 79831Q (2011) https://doi.org/10.1117/12.879893
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

A passive sensor platform has been developed at the University of Texas at Austin to monitor corrosion of embedded reinforcement in concrete structures. The sensors are powered and interrogated in a wireless manner. Initial sensor designs used a sacrificial corroding steel wire to indicate the risk of corrosion within concrete. The wire was physically connected to the sensor circuitry and passed through the circuit protection layer. Consequently, it allowed contaminants to reach the circuit electric components causing corrosion and limiting the service life of the sensor. A novel sensor configuration that relies on wireless inductive coupling between a resonant circuit and the transducer element is presented. The non-contact design eliminates the breach concern and enhances the durability of the senor. Preliminary test results of the new design will be discussed in this paper.

Citation Download Citation

Ali E. Abu Yosef, Praveenkumar Pasupathy, Sharon L. Wood, and Dean P. Neikirk "Low-cost passive sensors for monitoring corrosion in concrete structures", Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79831Q (19 April 2011); https://doi.org/10.1117/12.879893

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