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http://dx.doi.org/10.7734/COSEIK.2017.30.1.63

Magnetic Flux Leakage based Damage Quantification of Steel Bar  

Park, Jooyoung (Department of Civil, Architectural and Environmental System Engineering, Sungkyunkwan Univ.)
Kim, Ju-Won (Department of Convergence Engineering for Future City, Sungkyunkwan Univ.)
Yu, Byoungjoon (Department of Convergence Engineering for Future City, Sungkyunkwan Univ.)
Park, Seunghee (School of Civil, Architectural Engineering and Landscape Architecture, Sungkyunkwan Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.30, no.1, 2017 , pp. 63-70 More about this Journal
Abstract
In this paper, a magnetic flux leakage(MFL) based steel bar damage detection was first researched to quantify the signals from damages on the wire rope. Though many researches inspecting damages using a MFL method was proceeded until the present, the researches are at the level that diagnose whether damages are or not. This has limitation to take measures in accordance with the damage level. Thus, a MFL inspection system was modeled using a finite element analysis(FEM) program dealing with electromagnetism problems, and a steel bar specimen was adopted as a ferromagnetic object. Then, an experimental study was also carried out to verify the simulation results with a steel bar which has same damage conditions as the simulation. The MFL signals was nearly not affected by the increase of the inspection velocity, and the magnitudes of the signals are not identical according to the change of the defect width even the defects have same depth. On the basis of the analysis, the signal properties from the damages were extracted to classify the type of damages, and it could be confirmed that classification of damages using extracted signal properties is feasible.
Keywords
magnetic flux leakage(MFL); numerical simulation; damage detection; non-destructive testing;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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