Basis and application of GMR sensors for reinforced concrete elements

John S Popovics, G. Gallo, P. L. Chapman, M. Shelton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose magnetic sensing as a non-destructive method to monitor steel corrosion in concrete. GMR sensors show promise for this application. Initial experimental tests showed that the magnetic fields can be sensed readily, even through concrete. The residual magnetic field emitted by a piece of stock reinforcing steel bar can be significant, comparable to that of a bar magnet. Test data show that signal variability is highly sensitive to sensor type and input voltage. Initial results show that GMR sensor data are capable of distinguishing between passivated and corroding reinforcing steel bars. 2008 Taylor & Francis Group.

Original languageEnglish (US)
Title of host publicationProceedings of the World Forum on Smart Materials and Smart Structures Technology, SMSST 07
Number of pages1
StatePublished - Dec 1 2008
EventWorld Forum on Smart Materials and Smart Structures Technology, SMSST 07 - Chongqing, Nanjing, China
Duration: May 22 2007May 27 2007

Publication series

NameProceedings of the World Forum on Smart Materials and Smart Structures Technology, SMSST'07

Other

OtherWorld Forum on Smart Materials and Smart Structures Technology, SMSST 07
CountryChina
CityChongqing, Nanjing
Period5/22/075/27/07

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Popovics, J. S., Gallo, G., Chapman, P. L., & Shelton, M. (2008). Basis and application of GMR sensors for reinforced concrete elements. In Proceedings of the World Forum on Smart Materials and Smart Structures Technology, SMSST 07 (Proceedings of the World Forum on Smart Materials and Smart Structures Technology, SMSST'07).