1st Edition

Electrical and Magnetic Methods of Nondestructive Testing

By J Blitz Copyright 1991
    246 Pages 52 B/W Illustrations
    by CRC Press

    Electrical and Magnetic Methods of Nondestructive Testing presents a comprehensive account of the electrical and magnetic methods of nondestructive testing (NDT). The book begins with a discussion of the requirements for NDT and the criteria for the choice of a given method, followed by a summary of the general theory relating to electrical and magnetic testing techniques. Subsequent chapters discuss specific methods, including eddy current and flux-leakage techniques and microwave and potential drop methods. The appendix provides some useful programs for eddy current impedance analyses. These programs are in BASIC and can be run on PCs.

    INTRODUCTION
    General considerations
    Methods of nondestructive testing
    Electrical and magnetic methods
    The choice of the method of testing
    Automation in nondestructive testing
    Conclusion
    Further reading

    FUNDAMENTAL THEORY
    General considerations
    Electrical conductivity and resistivity
    Dielectric materials
    Electromagnetism
    Alternating currents
    Circuit networks
    Ferromagnetic materials
    Electromagnetic radiation

    MAGNETIC METHODS
    Introduction
    Flux-leakage methods
    Magnetic particle inspection (MPI)
    Magnetic tape inspection (magnetography)
    Quantitative flux-leakage detectors
    Quantitative flux-leakage applications
    Magnetization and hysteresis methods
    Miscellaneous magnetic techniques

    EDDY CURRENTS: PRINCIPLES
    Introduction
    Coils encircling defect-free metal cylindrical rods
    Coils encircling cylindrical defect-free tubes
    Internal coaxial coils in cylindrical defect-free metal tubes
    Coils scanning the surfaces of defect-free conductors
    Defect modeling

    EDDY CURRENT METHODS
    General considerations
    Fundamental measurements
    Probe design
    Requirements for eddy current measurements
    Basic eddy current tests-measurements
    Basic eddy current defect detection and sizing
    More advanced eddy testing current methods

    MICROWAVE METHODS OF TESTING
    Introduction
    Microwave radiation
    Microwave instrumentation
    Microwave measurements

    MISCELLANEOUS METHODS
    General considerations
    Potential drop methods
    Resistance strain gauges
    Electrified particle testing
    Other methods

    APPENDIX

    Biography

    Jack Blitz (Author)

    "… well-written and useful book … may form an ideal student textbook for mixed or supporting courses …"
    -The Structural Engineer

    "… a good mix of theoretical background and practical application. It is careful with units, always important in the use of electrical and magnetic measurement methods, and there is a helpful list of relevant standards in an appendix."
    -Aslib Book Guide