Physical Acoustics V11
Principles and Methods
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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.
Table of Contents
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
Product details
- No. of pages: 378
- Language: English
- Copyright: © Academic Press 1975
- Published: September 28, 1975
- Imprint: Academic Press
- eBook ISBN: 9780323153287