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  • © 2003

EMATs for Science and Industry

Noncontacting Ultrasonic Measurements

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Table of contents (17 chapters)

  1. Front Matter

    Pages i-x
  2. Introduction

    1. Introduction

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

    1. Front Matter

      Pages 11-11
    2. Coupling Mechanism

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 13-38
    3. Available Emats

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 39-67
    4. Brief Instruction to Build Emats

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 69-80
  4. Resonance Spectroscopy with Emats —Emar—

    1. Front Matter

      Pages 81-81
    2. Principles of Emar for Spectral Response

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 83-92
    3. Free-Decay Measurement for Attenuation and Internal Friction

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 93-102
  5. Physical-Acoustic Studies

    1. Front Matter

      Pages 103-103
    2. In-Situ Monitoring of Dislocation Mobility

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 105-134
    3. Elastic Constants and Internal Friction of Advanced Materials

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 135-192
    4. Nonlinear Acoustics

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 193-196
  6. Industrial Applications

    1. Front Matter

      Pages 197-197
    2. On-Line Texture Monitoring of Steel Sheets

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 199-213
    3. Acoustoelastic Stress Measurements

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 215-260
    4. Measurements on High-Temperature Steels

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 261-269
    5. Measurement of Induction-Hardening Depth

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 271-280
    6. Detection of Flaw and Corrosion

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 281-297
    7. Average Grain Size of Steels

      • Masahiko Hirao, Hirotsugu Ogi
      Pages 299-306

About this book

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.

Authors and Affiliations

  • Osaka University, Japan

    Masahiko Hirao, Hirotsugu Ogi

Bibliographic Information

Buy it now

Buying options

eBook USD 84.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book USD 109.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access