A multi-sensor array inductive scanner for rapid imaging of reinforced and pre-stressed concrete

This paper describes the development of a portable multi-sensor array inductive system for rapidly imaging steel rebars in concrete. Latest research shows that phase images can be generated which reveal areas of surface corrosion and that impedance changes are useful for locating the boundaries of corroded regions. The system comprises a microprocessor controlled acquisition system and a software suite containing algorithms for image restoration. It will enable engineers to perform quick and easy on-site testing.

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