Electromagnetic Acoustic Transducers (2nd Ed., Softcover reprint of the original 2nd ed. 2017) Noncontacting Ultrasonic Measurements using EMATs Springer Series in Measurement Science and Technology Series
Auteurs : Hirao Masahiko, Ogi Hirotsugu
This second edition provides comprehensive information on electromagnetic acoustic transducers (EMATs), from the theory and physical principles of EMATs to the construction of systems and their applications to scientific and industrial ultrasonic measurements on materials. The original version has been complemented with selected ideas on ultrasonic measurement that have emerged since the first edition was released.
The book is divided into four parts:
PART I offers a self-contained description of the basic elements of coupling mechanisms along with the practical designing of EMATs for various purposes. Several implementations to compensate for EMATs? low transfer efficiency are provided, along with useful tips on how to make an EMAT.
PART II describes the principle of electromagnetic acoustic resonance (EMAR), which makes the most of EMATs? contactless nature and is the most successful amplification mechanism for precise measurements of velocity and attenuation.
PART III applies EMAR to studying physical acoustics. New measurements have emerged with regard to four major subjects: in situ monitoring of dislocation behavior, determination of anisotropic elastic constants, pointwise elasticity mapping (RUM), and acoustic nonlinearity evolution.
PART IV deals with a variety of individual issues encountered in industrial applications, for which the EMATs are believed to be the best solutions. This is proven by a number of field applications.
Describes the physical principle of EMATs stemming from electromagnetics and elasticity mechanics, providing useful clues about the application of EMATs for individual purposes
Provides many new studies of physical acoustic measurements that only EMATs can realize, including electromagnetic acoustic resonance and resonance ultrasound microscopy
Summarizes successful industrial applications of EMATs for materials characterization and nondestructive inspection
Includes supplementary material: sn.pub/extras
Date de parution : 11-2016
Ouvrage de 380 p.
15.5x23.5 cm
Date de parution : 06-2018
Ouvrage de 380 p.
15.5x23.5 cm
Thème d’Electromagnetic Acoustic Transducers :
Mots-clés :
Elastic Constants; Elastic Wave Propagation; Electromagnetic Acoustic Transducer (EMAT); Fundamental Physics of Wave-matter Interactions; Internal Friction; Materials characterization; Noncontact Ultrasonic Measurements; Physical Acoustics; Resonance Spectroscopy; Ultrasonic Microscopy; Ultrasonic Nondestructive Inspection/evaluation