Invariance transformations for magnetic flux leakage signals

S. Mandayam, L. Udpa, S. S. Udpa, W. Lord

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


Magnetic flux leakage (MFL) methods arc used extensively for inspecting ferromagnetic materials. The analysis of the MFL signal is however fraught with problems associated with the sensitivity of the signal to a number of factors such as the MFL sensor velocity and variations in the permeability of the test specimen. The interpretation can be simplified if the signals can be processed to attain invariance to these conditions. This paper presents novel methods for obtaining permeability invariant and velocity invariant MFL signals.

Original languageEnglish (US)
Pages (from-to)1577-1580
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number3 PART 2
StatePublished - 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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