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EMATs for Science and Industry

Noncontacting Ultrasonic Measurements

  • Masahiko Hirao
  • Hirotsugu Ogi

Table of contents

  1. Front Matter
    Pages i-x
  2. Introduction

    1. Masahiko Hirao, Hirotsugu Ogi
      Pages 1-10
  3. Development of Emat Techniques

    1. Front Matter
      Pages 11-11
    2. Masahiko Hirao, Hirotsugu Ogi
      Pages 13-38
    3. Masahiko Hirao, Hirotsugu Ogi
      Pages 39-67
    4. Masahiko Hirao, Hirotsugu Ogi
      Pages 69-80
  4. Resonance Spectroscopy with Emats —Emar—

    1. Front Matter
      Pages 81-81
    2. Masahiko Hirao, Hirotsugu Ogi
      Pages 83-92
    3. Masahiko Hirao, Hirotsugu Ogi
      Pages 93-102
  5. Physical-Acoustic Studies

    1. Front Matter
      Pages 103-103
    2. Masahiko Hirao, Hirotsugu Ogi
      Pages 105-134
    3. Masahiko Hirao, Hirotsugu Ogi
      Pages 135-192
    4. Masahiko Hirao, Hirotsugu Ogi
      Pages 193-196
  6. Industrial Applications

    1. Front Matter
      Pages 197-197
    2. Masahiko Hirao, Hirotsugu Ogi
      Pages 199-213
    3. Masahiko Hirao, Hirotsugu Ogi
      Pages 215-260
    4. Masahiko Hirao, Hirotsugu Ogi
      Pages 261-269
    5. Masahiko Hirao, Hirotsugu Ogi
      Pages 271-280
    6. Masahiko Hirao, Hirotsugu Ogi
      Pages 281-297
    7. Masahiko Hirao, Hirotsugu Ogi
      Pages 299-306
    8. Masahiko Hirao, Hirotsugu Ogi
      Pages 307-336
    9. Masahiko Hirao, Hirotsugu Ogi
      Pages 337-344
  7. Back Matter
    Pages 345-372

About this book

Introduction

EMATs for Science and Industry comprises the physical principles of electromagnetic acoustic transducers (EMATs) and the applications to scientific and industrial ultrasonic measurements on materials. The text is arranged in four parts:
-PART I is intended to be a self-contained description of the basic elements of coupling mechanism along with practical designing of EMATs for various purposes. There are several implementations to compensate for the low transfer efficiency of the EMATs. Useful tips to make an EMAT are also presented.
-PART II describes the principle of electromagnetic acoustic resonance (EMAR), which makes the most of contactless nature of EMATs and is the most successful amplification mechanism for precise velocity and attenuation measurements.
-PART III applies EMAR to studying the physical acoustics. New measurements emerged on three major subjects; in situ monitoring of dislocation behavior, determination of anisotropic elastic constants, and acoustic nonlinearity evolution.
-PART IV deals with a variety of individual topics encountered in industrial applications, for which the EMATs are believed to the best solutions.

Keywords

alloy crystal diffraction elasticity spectroscopy thin film ultrasound

Authors and affiliations

  • Masahiko Hirao
    • 1
  • Hirotsugu Ogi
    • 1
  1. 1.Osaka UniversityJapan

Bibliographic information