DocumentCode :
1422550
Title :
Steel Corrosion Characterization Using Pulsed Eddy Current Systems
Author :
He, Yunze ; Tian, Guiyun ; Zhang, Hong ; Alamin, Mohammed ; Simm, Anthony ; Jackson, Paul
Author_Institution :
Newcastle Univ., Newcastle upon Tyne, UK
Volume :
12
Issue :
6
fYear :
2012
fDate :
6/1/2012 12:00:00 AM
Firstpage :
2113
Lastpage :
2120
Abstract :
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.
Keywords :
carbon steel; chemical variables measurement; coatings; corrosion; eddy current testing; feature extraction; steel; International Paint; PEC feature; PEC response; PEC testing; actual rust region; complex mix corrosion layer; conductivity representation; conductivity variation; corrosion characterization; early-stage corrosion evaluation; early-stage corrosion prediction; marine atmospheric corrosion rate measurement; material thickness variation; permeability representation; permeability variation; pulsed eddy current system; signal feature extraction; steel corrosion characterization; time-domain features; uncoated mild steel samples; Conductivity; Corrosion; Feature extraction; Materials; Monitoring; Permeability; Steel; Corrosion characterization; feature extraction; pulsed eddy current; steel;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2012.2184280
Filename :
6130570
Link To Document :
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