1FOERSTER Principles of Leakage Flux[EB/OL].http://www.foerstergroup.com/,2002.
2Avi Twitto, Joseph Shamir, Alexander Bekker. Detection of internal defects Using phase shifting holographic Interferometry[J] .NDT&EInt, 1996,29:163-17.
9Etcheverry J, Pignotti A, Sanchez G, et al. Defect signal enhancement in inspeetion lines by magnetic flux leakage[J]. Review of Quantitative Nondestructive Evaluation, 2003, 22:1 721-1 727.
10Lord W,Hwang J H.Defect characterization for magnetic leakage fields[J].British Journal of NDT,1977,19(1):14-18.