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Steel Corrosion Characterization Using Pulsed Eddy Current Systems

Lookup NU author(s): Professor Gui Yun TianORCiD, Hong Zhang, Mohammed Al-Amin, Anthony Simm


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A pulsed eddy current (PEC) system has been used to characterize atmospheric corrosion on steel samples. International Paint has supplied coated and uncoated mild steel (S275) samples with marine atmospheric corrosion (exposure time between 1 and 10 months). The PEC response due to corrosion is a complex mix of many factors, including conductivity, permeability and material thickness variation, which are all taken into account through experimental studies and the extraction of signal features. Considering the conductivity and permeability variation in the corrosion layer or the actual rust region, two time-domain features, each representing the conductivity and permeability, are extracted and used to characterize corrosion. The relationship between PEC features and exposure time has been derived, which can be useful for corrosion rate measurement and early-stage corrosion evaluation and prediction. In conclusion, PEC testing has the potential for corrosion characterization and monitoring in areas such as the marine industry.

Publication metadata

Author(s): He YZ, Tian GY, Zhang H, Alamin M, Simm A, Jackson P

Publication type: Article

Publication status: Published

Journal: IEEE Sensors Journal

Year: 2012

Volume: 12

Issue: 6

Pages: 2113-2120

Print publication date: 01/06/2012

ISSN (print): 1530-437X

ISSN (electronic): 1558-1748

Publisher: IEEE


DOI: 10.1109/JSEN.2012.2184280


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Funder referenceFunder name
JY20101Ministry of Education
YY201032National University of Defense Technology
China Scholarship Council
CX2010B010Hunan province for Graduate Scientific Research Innovation Fund
EP/E005071Engineering and Physical Sciences Research Council, U.K