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 language | English |
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Pages (from-to) | 2437-2442 |
Number of pages | 5 |
Journal | IEEE Transactions on Instrumentation and Measurement |
Volume | 57 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2008 |
Keywords
- DC magnetic field
- Magnetic field imaging
- Metal detection
- Nondestructive evaluation (NDE)