Electromagnetic Acoustic Transducers PDF Download
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Author: Masahiko Hirao
Publisher: Springer
ISBN: 443156036X
Category : Technology & Engineering
Languages : en
Pages : 382
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Book Description
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.
Author: Masahiko Hirao
Publisher: Springer
ISBN: 443156036X
Category : Technology & Engineering
Languages : en
Pages : 382
Get Book Here
Book Description
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.
Author: Albert Overhauser
Publisher: John Wiley & Sons
ISBN: 3527632247
Category : Science
Languages : en
Pages : 896
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Book Description
Using potassium as an example, this work presents a unique approach to the anomalous effects in metals, resulting in knowledge that can be applied to similar materials. Most theoretical predictions on the electric, magnetic, optical, and thermal properties of a simple metal do - surprisingly - not agree with experimental behavior found in alkali metals. The purpose of this volume is to document the many phenomena that have violated expectations. It collects in one place the research by Albert Overhauser, one of the pioneers of the field. His and his collaborators work has led to a unified synthesis of alkali metal peculiarities. The unique collection of 65 reprint papers, commented where necessary to explain the context and perspective, is preceded by a thorough and well paced introduction. The book is meant to advanced solid state physics and science historians. It might also serve as additional reading in advanced solid state physics courses. With a foreword by Mildred and Gene Dresselhaus
Author: Volkmar Kose
Publisher: IOS Press
ISBN: 9789051993813
Category : Science
Languages : en
Pages : 926
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Book Description
The contents is dominated by the latest problems of applied electrical engineering, micro electromechanics, biosensor technology and biomagnetism. The book covers the numerical calculation methods for the design and optimization of sensors, actuators and electric machines, as well as the treatment of inverse problems, in materials testing and in the field of medicine in particular. Other central topics are the material properties and their simulation and much consideration is given to micro-electromechanics.
Author: R. Albanese
Publisher: IOS Press
ISBN: 9789051993752
Category : Medical
Languages : en
Pages : 362
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Book Description
Europe's place in the world throughout the narrative and in the primary source feature, 'The Global Record.' The seventh edition has been carefully revised and edited for greater accessibility, and features a streamlined design that incorporates pedagogical features such as focus questions, key terms, and section summaries to better support students of western civilization. The reconceived narrative and restructured organization, featuring smaller, more cohesive learning units, lend to greater ease of use for both students and instructors. History CourseMate, a set of media-rich study tools with interactive eBook that gives students access to quizzes, flashcards, primary sources, videos and more, are available for this new edition. (CourseMate may be bundled with the text or purchased separately.) Available in the following split options: WESTERN CIVILIZATION: BEYOND BOUNDARIES, Seventh Edition Complete, Volume I: To 1715, Volume II: Since 1560, Volume A: To 1500, Volume B: 1300-1815, and Volume C: Since 1789. Available with InfoTrac Student Collections http://gocengage.com/infotrac.
Author: Dale Everett Chimenti
Publisher:
ISBN:
Category : Hall effect
Languages : en
Pages : 264
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Book Description
Author: Martin R. Gaerttner
Publisher:
ISBN:
Category : Sound-waves
Languages : en
Pages : 332
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Book Description
"A method of generating (and detecting) ultrasound in metals through purely electromagnetic means is investigated in this thesis. Radio frequency pulse echo techniques used for studying this process, called direct generation (or detection), are described. Measurements of the coupling efficiency of direct generation in a number of metals are reported for both the local and non local limits of electrical conductivity. Accurate measurements of the temperature, frequency, and magnetic field dependence have been made using frequencies between 3 and 100MHz. A free electron theory which assumes specular scattering of electrons at the surface has been proposed by others. This theory is extended in this thesis and quantitative comparisons with experimental measurements are presented. It has been found that, in the local limit of conductivity, experiment and theory are in good agreement for both transverse and longitudinal waves. In the non local limit, only transverse wave direct generation was considered. Discrepancies between experiment and theory were observed for the non local case with a magnetic field parallel to the direction of acoustic propagation. It is postulated that effects of diffuse scattering of electrons at the surface are responsible for some discrepancies. An interesting oscillatory magnetic field dependence of direct generation is reported for magnetic fields oriented perpendicular to the direction of acoustic propagation. The effect is demonstrated to result from forces associated with Gantmakher splashes. Although the coupling efficiency of direct electromagnetic generation is weak, it is demonstrated that signals can be obtained that are useful for non destructive testing. There are indications that non local direct generation becomes very efficient at microwave frequencies. Direct generation has also been observed in liquid metals."--Abstract.
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 954
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Book Description
Author: Ginger Butcher
Publisher: Government Printing Office
ISBN: 9780996778022
Category : Artificial satellites
Languages : en
Pages : 40
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 988
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Book Description
Author: Warren P. Mason
Publisher: Elsevier
ISBN: 0323151272
Category : Science
Languages : en
Pages : 416
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Book Description
Physical Acoustics: Principles and Methods, Volume X, is a five-chapter text that covers the principles and methods of generation of physical acoustics. The first chapter provides the essential results obtained concerning acoustic surface waves on curved surfaces and relates them to the corresponding plane surface waves. This chapter also presents a classification of surface and lateral waves on flat surfaces along with their properties. The second chapter describes a group of acoustic wave problems that are particularly suitable for study by means of Schlieren visualization. The third chapter deals with the production of ultrasonic waves by direct electromagnetic generation, while type II superconductors, which are useful for superconducting magnets with strong magnetic fields and with high current densities, are investigated in the fourth chapter. The fifth chapter discusses the principles of hologram and its application to very short length electromagnetic waves known as microwaves and to acoustic waves of various wavelengths.
