Research of Non-Destructive Testing of Wire Rope Using Magnetic Flux Leakage

Abstract:

Based on the magnetic theory, the paper reviewed the factors of affecting the distribution of magnetic flux leakage (MFL) on the ferromagnetic material and analyzed the wire rope defects characters from MFL signal. A non-destructive testing (NDT) instrument of steel wire rope using magnetic flux leakage was presented in this paper. By using permanent magnets to magnetize wire rope and using Hall element arrays to test MFL, Intelligent signal processing was applied for effective discrimination of wire rope’s flaws. The experiment results show the degree and the width of defects, the annular distribution of localized flaws such as concentrated or dispersive broken wires can be well distinguished. The instrument can be used conveniently with good resolution and repeatability and can meet the requirement of real time.

• Periodical: Applied Mechanics and Materials (Volume 189)
• Pages: 255-259
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.189.255
• Online since: July 2012
• Authors: Xiao Yong Zhong, Xiao Hong Zhang
• Keywords: Flaw, Magnetic Flux Leakage (MFL), Nondestructive Testing (NDT), Steel Wire Rope

References

[1] V. Cacciatore, A. Canova, A. Vallan and B. Vusini. Experience and technologies in NDT of ropes[J]. Key Engineering Materials, 2007, 347: 627-632.

DOI: 10.4028/www.scientific.net/kem.347.627

[2] Smith, D.T., McCann, P. Evaluation of Instruments for the Non-Destructive Testing of Wire Ropes[J]. Health and Safety Laboratory, Sheffield, UK, 2002: 35-39.

[3] C. Tomasz, P. Grzegorz, T. Takashi. Evaluation of fatigue-loaded steel samples using fusion of electromagnetic methods[J]. Journal of Magnetism and Magnetic Materials, 2007, 310: 2737- 2739.

DOI: 10.1016/j.jmmm.2006.10.980

[4] V. Babbar, J. Bryne, and L. Clapham. Mechanical damage detection using magnetic flux leakage tools: modeling the effect of dent geometry and stresses[J]. NDT&E International, 2005, 38: 471- 477.

DOI: 10.1016/j.ndteint.2004.12.002

[5] E. Kalwa, K. Piekarski. Determination of flaws located at different depth levels in the cross- section of steel rope[J]. NDT&E International, 2008, 21: 77-82.

DOI: 10.1016/0308-9126(88)90404-x

[6] A. Canova, B. Vusini. Magnetic Analysis of Non Destructive Testing Detectors for Ferromagnetic Ropes[J]. COMPEL; 2008, 27(4): 867-878.

DOI: 10.1108/03321640810878289

[7] X. C. Zhang. Hall effect testing broken wires in steel rope[J]. Engineering physics, 1998, 8: 34-36.

[8] X. Y. Zhong, X. H. Zhang. Research of on­line detection apparatus for industrial steel wire rope[J]. Applied Mechanics and Materials Vols, 2011, 48: 924-927.

DOI: 10.4028/www.scientific.net/amm.48-49.924