NDLI: Corrosion Potential Sensor for Remote Monitoring of Civil Structure Based on Printed Circuit Board Sensor

Content Provider	IEEE Xplore Digital Library
Author	Perveen, K. Bridges, G.E. Bhadra, S. Thomson, D.J.
Copyright Year	1963
Abstract	We present a printed circuit board-based wireless inductively coupled corrosion potential sensor for monitoring corrosion of steel-reinforced concrete civil infrastructure. The sensor is a passive LC coil resonator whose resonant frequency varies owing to the corrosion potential produced by two electrodes connected across a voltage-controlled capacitor. The junction capacitance of the voltage-controlled capacitor also varies according to the potential generated by the two electrodes, which is in turn responsible for changing resonant frequency of the sensor. The two electrodes are a stainless steel reference electrode and a steel reinforcement electrode. An external interrogator coil coupled with the sensor coil monitors the sensor resonant frequency shift remotely by measuring the impedance change from the source end. The sensor has a sensitivity of ~1.2 kHz/mV both before and after it is embedded in the cement-based mortar used for testing the sensor. The sensor can be used to sense the corrosion susceptibility of existing structures by embedding the corrosion electrodes in new grout within a small slot formed in an existing structure. Using this approach, weight concentrations of NaCl mixed in cement-based mortars of greater than 2%-3% were detected. Accelerated corrosion tests on embedded sensors in simulations of both new and existing structure demonstrated corrosion potential resolution of less than 10 mV and an uncertainty of less than 50 mV. The sensor is simple in design, inexpensive, and passive making it a battery-less option for long-term corrosion monitoring, and widely deployable for civil structure.
Sponsorship	IEEE Instrumentation and Measurement Society Bureau international des poids et mesures IEEE International Bureau of Weights and Measures (BIPM) URSI NBS Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. Sci. Council Japan International Union of Pure and Applied Physics (IUPAP) NIST NRCC National Conference of Standards Laboratories (NCSL) Allen Osborne Associates Andeen-Hagerling, Inc. Ballantine Lab. Inc. Clarke-Hess Communications Research Corp. Fluke Corporation Guildline Instruments Hewlett-Packard Co. Julie Res. Lab. Inc. Keithley Instruments, Inc. Measurements International Ltd. Canada QuadTech Inc. Quantum Design Inc. Rotek Instrum. Corp. Tegam Inc. Tektronix Inc
Starting Page	2422
Ending Page	2431
Page Count	10
File Size	3100413
File Format	PDF
ISSN	00189456
Volume Number	63
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Corrosion Coils Electrodes Resonant frequency Concrete Capacitance Steel structural health monitoring (SHM). Accelerated corrosion test cement-based mortar corrosion potential sensor inductively coupled sensor passive wireless sensor resonant frequency structural health monitoring (SHM)
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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