Table of Content:Chapter 1 Introduction1.1 Introduction1.2 Factors affecting the magnetic flux leakage testing1.3 Researches on quantitative inversion of magnetic flux leakage defectChapter 2 Detection signal processing2.1 Data acquisition and storage2.2 Data compression and de-noisieChapter 3 Quantitative inversion of magnetic flux leakage defect3.1 Introduction3.2 Defect quantification based on statistical methods3.3 Neural network quantification methods based on radial basis function3.4 Three-dimensional finite element neural network quantification methodChapter 4 Inversion of magnetic flux leakage deficiencies data4.1 Characteristics of three-dimensional magnetic flux leakage signal4.2 Random search iterative inversion4.3 Neural network iterative inversion4.4 Progressive successive approximation inversion4.5 Sampling effect on inversion accuracyChapter 5 3-demensional imaging in magnetic flux leakage testing5.1 Characteristics of three-dimensional magnetic flux leakage signals5.2 Quantification for complete signals5.3 Quantification for incomplete signalsReference