A preliminary magnetoinductive sensor system for real-time imaging of steel reinforcing bars embedded within concrete

Diego S. Benitez, Sung Quek, Patrick Gaydecki, Vladimir Torres

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This paper studies the feasibility of using solid-state magnetoinductive probes for detecting and imaging steel reinforcing bars embedded within prestressed and reinforced concrete. Changes in the inductance of the sensor material are directly proportional to the strength of the measured magnetic field parallel to the sensor. Using a square coil of 300 mm × 300 mm × 2.5 mm, 10-mm rebars can be imaged down up to a depth of 100 mm. Experimental results obtained by scanning steel bar specimens are presented. General performance characteristics and sensor limitations are also investigated. © 2008 IEEE.
    Original languageEnglish
    Pages (from-to)2437-2442
    Number of pages5
    JournalIEEE Transactions on Instrumentation and Measurement
    Volume57
    Issue number11
    DOIs
    Publication statusPublished - 2008

    Keywords

    • DC magnetic field
    • Magnetic field imaging
    • Metal detection
    • Nondestructive evaluation (NDE)

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