Calculations of the effects of anisotropy on magnetic flux leakage detector signals
Journal Article
·
· IEEE Transactions on Magnetics
- Queen`s Univ., Kingston, Ontario (Canada). Dept. of Physics
Oil and gas pipelines are inspected for corrosion using magnetic flux leakage (MFL) inspection tools. It has been found that varying line pressure, bending or residual stresses cause changes in the MFL signals. Changes in the amplitude are thought to be due to stress-induced changes in the bulk magnetic anisotropy or preferred easy axis of the steel pipe wall. This suggestion is supported by results presented here of finite element calculations of the effects of changes in anisotropy on MFL signal amplitudes.
- OSTI ID:
- 253668
- Journal Information:
- IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 3Pt2 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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