ELECTROMAGNETIC NDE TECHNIQUES FOR MATERIALS CHARACTERIZATION

In this chapter, various electromagnetic NDE techniques such as eddy current, magnetic, micro-magnetic, potential drop and microwave techniques for materials characterization are covered. For each technique, principle, instrumentation along with sensors, capabilities, applications, and recent advances towards quantitative characterization of defects, microstructures and residual stresses in engineering materials are given. Special emphasis is also given to numerical modelling, sensors and signal processing for automated NDE.