This book introduces the fundamental theory of electromagnetic ultrasonic guided waves, together with its applications. It includes the dispersion characteristics and matching theory of guided waves; the mechanism of production and theoretical model of electromagnetic ultrasonic guided waves; the effect mechanism between guided waves and defects; the simulation method for the entire process of electromagnetic ultrasonic guided wave propagation; electromagnetic ultrasonic thickness measurement; pipeline axial guided wave defect detection; and electromagnetic ultrasonic guided wave detection of gas pipeline cracks.
This theory and findings on applications draw on the author’s intensive research over the past eight years. The book can be used for nondestructive testing technology and as an engineering reference work. The specific implementation of the electromagnetic ultrasonic guided wave system presented here will also be of value for other nondestructive test developers.
Table des matières
Electromagnetic acoustic transducer.- Analytical method of EMAT based on
Lorentz force mechanization.- Analytical method of EMAT based on a magnetostrictive mechanism.- The propagation characteristics of a circumferential ultrasonic guided wave in plate and pipe.- Simulation of interactions between guided waves and the defects by boundary element method.- Finite element simulation of ultrasonic guided
waves.- Applications of the electromagnetic ultrasonic guided waves technique.
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