Physical Acoustics V11

Principles and Methods

1st Edition - September 28, 1975
Imprint: Academic Press
Editor: Warren P. Mason
Language: English
Paperback ISBN:
9 7 8 - 0 - 1 2 - 4 3 1 5 2 6 - 6
eBook ISBN:
9 7 8 - 0 - 3 2 3 - 1 5 3 2 8 - 7

Physical Acoustics: Principles and Methods reviews the principles and methods of physical acoustics and covers topics ranging from third sound in superfluid helium films to the… Read more

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Physical Acoustics: Principles and Methods reviews the principles and methods of physical acoustics and covers topics ranging from third sound in superfluid helium films to the method of matched asymptotic expansions (MAE). Ultrasonic diffraction from single apertures and its application to pulse measurements and crystal physics are also discussed, together with elastic surface wave devices, acoustic emission, and nonlinear effects in piezoelectric quartz crystals. Comprised of six chapters, this volume begins with a detailed treatment of the theory of third sound in superfluid helium films, third sound resonators, and many other properties. The second chapter is devoted to the MAE method, with emphasis on its ability to produce results in acoustics and to provide insight into classical problems. Subsequent chapters deal with bulk and surface waves; phase coded signals and their generation and detection by interdigital grid structures; elastic surface wave devices such as pulse compression filters; and nonlinear effects in quartz crystals. The final chapter describes acoustic emission and the noise produced in materials when they are strained. This book will be of interest to physicists.

Contributors

Preface

1 Third Sound in Superfluid Helium Films

I. Introduction

II. The Theory of Third Sound in Flat Films

III. The Properties of Third Sound in Flat Films—Theory

IV. Experiments on Third Sound

V. The Surface Roughness of the Substrate

VI . Third Sound Resonators

VII. Third Sound in Mixed He3-He4 Films

VIII. Energy in Third Sound

IX. The Normal Fluid Motion and Attenuation

X. Microscopic Theories

Glossary of Key Symbols and Phrases

References

2 Physical Acoustics and the Method of Matched Asymptotic Expansions

I. Introduction and Elementary Illustrations

II. Scattering and Diffraction Problems

III. Acoustic Waveguides

IV. Nonlinear Acoustics

V. Conclusions

References

3 Ultrasonic Diffraction from Single Apertures with Application to Pulse Measurements and Crystal Physics

I. Introduction

II. Theory

III. Computations

IV. Experiments

V. Diffraction Corrections

VI. Input Amplitude Profile

VII. Broadband Pulses

VIII. Specimens of Finite Width

IX. Surface Waves

X. Summary

References

Appendix

4 Elastic Surface Wave Devices

I. Introduction

II. Phase Coded Signals

III. 13 Bit Barker Code Correlator

IV. Programmable Sequence Generator

V. Pulse Compression Filters

References

5 Nonlinear Effects in Piezoelectric Quartz Crystals

I. Introduction

II. Fundamental Equations of Quartz

III. Characteristic Coefficients

IV. Nonlinear Effects in Shear Vibrating Quartz Crystal Resonators

V. Equivalent Electrical Circuits of a Quartz Resonator

VI. Influence of an Applied dc Electric Field

VII. Conclusion

References

6 Acoustic Emission

I. Introduction

II. Historical Work

III. Early Work and General Background

IV. Materials Investigated with Acoustic Emission

V. Processes Studied with Acoustic Emission

VI. Structural Integrity

VII. Potpourri of Topics (Brief Descriptions)

VIII. Conclusions and Suggestions for Further Work

IX. Appendix

References

Bibliography

Subject Index

Contents of Previous Volumes

Life Sciences

Physical Sciences & Engineering

Social Sciences & Humanities

Health

Physical Acoustics V11

Principles and Methods

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