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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Corrosion Assessment of Steel Bars Used in Reinforced Concrete Structures by Means of Eddy Current Testing

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Author(s):
de Alcantara, Jr., Naasson P. [1] ; da Silva, Felipe M. [1] ; Guimaraes, Mateus T. [1] ; Pereira, Matheus D. [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ Unesp, Dept Elect Engn, BR-17033360 Bauru - Brazil
Total Affiliations: 1
Document type: Journal article
Source: SENSORS; v. 16, n. 1 JAN 2016.
Web of Science Citations: 9
Abstract

This paper presents a theoretical and experimental study on the use of Eddy Current Testing (ECT) to evaluate corrosion processes in steel bars used in reinforced concrete structures. The paper presents the mathematical basis of the ECT sensor built by the authors; followed by a finite element analysis. The results obtained in the simulations are compared with those obtained in experimental tests performed by the authors. Effective resistances and inductances; voltage drops and phase angles of wound coil are calculated using both; simulated and experimental data; and demonstrate a strong correlation. The production of samples of corroded steel bars; by using an impressed current technique is also presented. The authors performed experimental tests in the laboratory using handmade sensors; and the corroded samples. In the tests four gauges; with five levels of loss-of-mass references for each one were used. The results are analyzed in the light of the loss-of-mass and show a strong linear behavior for the analyzed parameters. The conclusions emphasize the feasibility of the proposed technique and highlight opportunities for future works. (AU)

FAPESP's process: 14/09609-0 - Development of ECT sensor for preliminary verification and monitoring of corrosion processes in reinforced concrete structures: computational simulations
Grantee:Matheus Dantas Pereira
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 14/09624-0 - Development of ECT sensor for preliminary verification and monitoring of corrosion processes in reinforced concrete structures: corrosion aceleration
Grantee:Mateus Tódero Guimarães
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 14/08797-8 - Development of ECT sensor for preliminary verification and monitoring of corrosion processes in reinforced concrete structures
Grantee:Naasson Pereira de Alcantara Jr.
Support Opportunities: Regular Research Grants
FAPESP's process: 14/09622-7 - Development of ECT sensor for preliminary verification and monitoring of corrosion processes in reinforced concrete structures: electric and electronic cicuits
Grantee:Felipe Matos da Silva
Support Opportunities: Scholarships in Brazil - Scientific Initiation