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http://dx.doi.org/10.21729/ksds.2018.11.2.53

Analysis of Magnetic Flux Leakage based Local Damage Detection Sensitivity According to Thickness of Steel Plate  

Kim, Ju-Won (Sch. of Architectural Engineering and Landscape Architecture, Sungkyunkwan Univ.)
Yu, Byoungjoon (Dept. of Convergence of Engineering for Future City, Sungkyunkwan Univ.)
Park, Sehwan (Dept. of Convergence of Engineering for Future City, Sungkyunkwan Univ.)
Park, Seunghee (Sch. of Civil. Architectural Engineering and Landscape Architecture, Sungkyunkwan Univ.)
Publication Information
Journal of Korean Society of Disaster and Security / v.11, no.2, 2018 , pp. 53-60 More about this Journal
Abstract
To diagnosis the local damages of the steel plates, magnetic flux leakage (MFL) method that is known as a adaptable non-destructive evaluation (NDE) method for continuum ferromagnetic members was applied in this study. To analysis the sensitivity according to thickness of steel plate in MFL method based damage diagnosis, several steel plate specimens that have different thickness were prepared and three depths of artificial damage were formed to the each specimens. To measured the MFL signals, a MFL sensor head that have a constant magnetization intensity were fabricated using a hall sensor and a magnetization yoke using permanent magnets. The magnetic flux signals obtained by using MFL sensor head were improved through a series of signal processing methods. The capability of local damage detection was verified from the measured MFL signals from each damage points. And, the peak to peak values (P-P value) extracted from the detected MFL signals from each thickness specimen were compared each other to analysis the MFL based local damage detection sensitivity according to the thickness of steel plate.
Keywords
Magnetic flux leakage; Steel plate NDE; Local damage detection; Sensing sensitivity; Thickness;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Boat, M., Pearson, N., Lieb, R., Davies, J., James, R., and Woodhead, B. (2014). The factors that affect the defect sizing capabilities of the Magnetic Flux Leakage Technique. 53rd Annual Conference of the British Institute of Non-Destructive Testing.
2 Goktepe, M. (2001). Non-destructive crack detection by capturing local flux leakage field. Sens. Actuator. A Phys. 91(1-2): 70-72.   DOI
3 Kang, D., Oh, J.-T., Kim, J.-W., Park, S. (2015). Study on MFL Technology for Defect Detection of Railroad Track Under Speed-up Condition. Journal of the Korean Society for Railway. 18(5): 401-409.   DOI
4 Kim, J.-W., Park, M., Kim, J., and Park, S. (2018). Improvement of MFL sensing-based damage detection and quantification for steel bar NDE. Smart Structures and Systems. 22(2): 239- 247.   DOI
5 Kim, J.-W. and Park, S. (2017). Magnetic flux leakage-based local damage detection and quantification for steel wire rope nondestructive evaluation. J. Intell. Mater. Syst. Struct. 29(17): 3396-3410.   DOI
6 Korea Highway Corporation (2005). A study for preventive maintenance of bridge. Road & Traffic ST-05-09.
7 Lacheisserie, E. D. T. D., Gignoux, D., and Schienker, M. (2005). Magnetism: Materials and Applications. Springer, Boston, USA.
8 Lee, M.-G. and Lee, S.-Y. (2008). A Study on the Fatigue Behavior of the Welded Structural Details in Plate Girder. J. of Korean Society of Safety. 23(2): 14-20.
9 Lenz, J. E. (1990). A review of magnetic sensors. Proc. of the IEEE. 78(6): 973-989.   DOI
10 Ministry of Land, Infrastructure and Transport (2017). Yearbook of road bridge and tunnel statistics 2017. MOLIT 11-1613000- 000108-10.
11 Mukhopadhyay, S. and Srivastava, G. P. (2008). Detection of leakage magnetic flux from near-side and far-side defects in carbon steel plates using a giant magneto-resistive sensor. Measurement Science and Technology. 19(1): 1-8.
12 Park, J.-U. and Park, K.-H. (2008). Fatigue Life Evaluation of Steel Bridge with Welding Defects. J. of Advanced Engineering and Technology. 1(2): 307-314.
13 Park, S. H. and Park, G. S. (2002). Research on MFL PIG Design for the Inspection of Underground Gas Pipeline. J. of the Korean Society for Nondestructive Testing. 22(2): 177-186.
14 Park, S., Kim, J.-W., Lee, C., and Lee, J.-J. (2014). Magnetic Flux Leakage Sensing-Based Steel Cable NDE Technique. Shock and Vibration, 2014: 929341.
15 Ramsden, E. (2006). Hall-effect Sensors: Theory and Applications. 2nd ed.. Newnes Books, Oxford, UK.
16 Shi, Y., Zhang, C., Li, R., Cai, M., and Jia, G. (2015). Theory and application of magnetic flux leakage pipeline detection. Sensors. 15(12): 31036-31055.   DOI
17 Shin, Y.-K. (1995). Numerical Prediction of Operating Conditions for Magnetic Flux Leakage Inspection of Moving Steel Sheets. Proc. of the Korean Society for Nondestructive Testing. 1995: 52-56.