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http://dx.doi.org/10.5050/KSNVE.2012.22.10.1010

Research on the Non-Contact Detection of Internal Defects in a Rail Using Ultrasonic Waves  

Han, Soon-Woo (Korea Railroad Research Institute)
Cho, Seung-Hyun (Korea Research Institute of Standards and Science)
Kim, Joon-Woo (Korea Research Institute of Standards and Science)
Heo, Tae-Hoon (Korea Research Institute of Standards and Science)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.10, 2012 , pp. 1010-1019 More about this Journal
Abstract
Non-contact detection of internal defects in a rail using ultrasonic waves is discussed in this paper. Cracks in a rail may be the cause of a serious railway accident such as derailment if left undetected. Concurrent rail inspection method based on ultrasonic testing using piezoelectric transducers has several limitations as it should keep physical contact with the rail. This work suggests a non-contact detection of internal defects in a rail using ElectroMagnetic Acoustic Transducers (EMAT) which can produce and measure ultrasonic waves in a rail without any couplant. The EMATs for rail inspection are designed and fabricated and their working performance is verified through a series of experiments on various types of internal defects in test rails. The effect of lift-off between the transducers and the rail on the generated signals is also discussed.
Keywords
Rail; Damage Detection; Internal Crack; Non-contact; Ultrasonics;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Office of Rail Regulator, 2006, Trail derailment at Hatfield, Report of the Independent Investigation Board of UK.
2 http://safetydata.fra.dot.gov
3 Clark, R., 2004, Rail Flaw Detection: Overview and Needs for Future Developments, NDT&E International, Vol. 37, pp. 111-118.   DOI
4 Han, S. W. and Cho, S. H.,2011, Review of Non-destructive Evaluation Technologies for Rail Inspection, Journal of KSNT, Vol. 31, No. 4, pp. 398-413.
5 Coccia, S., Bartoli, I., Marzani, A., di Scalea, F. L., Salamone, S. and Fateh, M., 2011, Numerical and Experimental Study of Guided Waves for Detection of Defects in the Rail Head, NDT&E International, Vol. 44, pp. 93-100.   DOI
6 Hirao, M. and Ogi, H., 1999, An SH-wave EMAT techniquefor gas pipeline inspection, NDT&E International, Vol. 32, No. 3, pp. 127-132.   DOI   ScienceOn
7 Cho, S. H., Park, J. H, Kwon, H. S., Ahn, B. and Lee, S. S., 2009, Development of an SH Wave Magnetostrictive Transducer Module for Guided Wave Testing of Plate Structures, Journal of KSNT, Vol. 29, No. 2, pp. 122-129.
8 http://www2.warwick.ac.uk/fac/sci/physics/research/ultra/research/rail_inspection.
9 Hirao, M. and Ogi, H., 2003, EMATs for Science and Industry, Kluwer, Boston.
10 Ogi, H., Hirao, M. and Ohtani, H., 1998, Line-focusing of Ultrasonic SV Wave by Electromagnetic Acoustic Transducer, Journal of Acoustical Society of America, Vol. 103, pp. 2411-2415.   DOI
11 Thomson, R. B., 1990, Measurement with EMAT Transducer, Physical Acoustics, Vol. XIX, Academic Press Inc., New York.
12 Lee, H. and Kim, H., 2009, Effect of Biasing Magnetic Fields on the Patch-type Magnetostrictive Transducers, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 11, pp. 1177-1183.   DOI
13 Lee, J. K., Kim, H. W., Lee, H. and Kim, Y. Y., 2011, Basic Experiment for Lamb Wave Focusing by Phased Magnetostrictive Transducers in a Plate, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, No. 3, pp. 227-233.   DOI
14 International Union of Railways, 2002, UIC Code 712R Rail Defect, UIC, Paris.
15 Workman, G. L., Kishoni, D. and Moore, P. O., 2007, Nondestructive Testing Handbook Vol. 7 - Ultrasonic Testing, American Society for Nondestructive Testing, Columbus.