Transient Electromagnetic-Thermal Nondestructive Testing: Pulsed Eddy Current and Transient Eddy Current Thermography

Transient Electromagnetic-Thermal Nondestructive Testing: Pulsed Eddy Current and Transient Eddy Current Thermography covers three key areas of theories, methods and applications, primarily the multi-physics field, including eddy current, heat conduction and Infrared radiation for defect evaluation, lateral heat conduction, which is analyzed to detect parallel cracks, and longitudinal heat conduction, which is analyzed to detect depth defect, or that which is beyond skin depth.

In addition, the book explores methods, such as time domain, frequency domain and logarithm domain, also comparing A-scan , B-scan and C-scan. Sections on defect identification, classification and quantification are covered, as are advanced algorithms, principal components analysis (PCA), independent components analysis (ICA) and support vector machine (SVM).

The book uses a lot of experimental studies on multi-layer aluminum structures, honeycomb structure, CFRP in the aerospace field, and steel and coating in the marine rail and transportation fields.

Presents two kinds of transient NDT testing, from theory and methodology, to applicationsIncludes time domain frequency domain and logarithm domain, which are all analyzedIntroduces A-scan , B-scan and C-scan, which are compared Provides experimental studies for real damages, including corrosion and blister in steel, stress in aluminum, impact and delamination in CFRP laminates and RCF cracks are abundant

1. Nondestructive Testing and Transient Electromagnetic-Thermal NDT

Part I: Pulsed Eddy Current 2. Magnetic Sensor Based Pulsed Eddy Current for Defect Detection and Characterization 3. Hall Based PEC Features for Material Properties Evaluation and Defect Detection 4. Coil-Based Rectangular PEC Sensor for Defect Classification

Part II: Transient Eddy Current Thermography 5. Active Thermography and Eddy Current Excited Thermography 6. Heat Conduction Based Eddy Current Pulsed Thermography (ECPT) for Defect Evaluation 7. Eddy Current Step or Time-resolved Thermography (ECST) 8. Eddy Current Pulsed Phase Thermography (ECPPT) for Metal Materials Evaluation 9. Volume or Inside Heating Eddy Current Thermography 10. Volume Heating ECT and Phase Analysis for CFRP Evaluation 11. Pulsed Inductive Thermal Wave Radar (PITWR) 12. Through Coating Imaging of Early Marine Corrosion Using ECPPT

Part III: Physical-Mathematical Model Based ECPT for Defect Evaluation 13. Separations of ECPT Transient Electromagnetic Thermal Fields 14. Unsupervised Sparse Pattern Diagnostic of Defects with ECPT 15. Multi-dimensional Tensor-based ECPT for Wind Turbine Gear Inspection 16. Physics-based Modeling and Pattern Mining of ECPT