Physical Acoustics V14

Physical Acoustics: Principles and Methods, Volume XIV is a five-chapter text that covers significant studies on acoustic microscopy, sound propagation in liquid crystals, ultrasonic transducers, and ultrasonic flowmeters.
The opening chapter discusses techniques of acoustic microscopy, aberration and resolution performance, acoustic lens transfer functions, antireflection coatings, and both transmission and reflection acoustic microscopy. The following chapter deals with the applications to the states called liquid crystals or anisotropic liquids, states in which the material flows but yet has a long-range order that makes it macroscopically anisotropic. The third chapter focuses on the principles and practical applications of electromagnetic transducers for both surface waves and bulk waves. The fourth chapter surveys first the characterization of ultrasonic transducers for materials testing and then compares actual responses to those of an ""ideal"" transducer, elaborating on the many important factors that affect the results obtained with an ultrasonic testing system. The final chapter explains the principles underlying ultrasonic measurements of flow, specifically covering eight different categories of ultrasonic flow measurement principles and their industrial applications indicated.
This book will be of great value to researchers in their fields of electronics technology and applied and engineering mechanics.

Contenu

Contributors
Preface
1 Acoustic Microscopy
I. Introduction
II. Techniques of Acoustic Microscopy
III. Aberration of a Single Surface Lens
IV. Resolution Performance of the Scanning Acoustic Microscope
V. Acoustic Lens Transfer Functions
VI. Antireflection Coatings for Acoustic Lenses
VII. Transmission Acoustic Microscopy
VIII. Reflection Acoustic Microscopy
List of Symbols
References
2 Sound Propagation in Liquid Crystals
I. Introduction
II. Theory
III. Experiments
Appendix A: Relations between the Parameters Appearing in Other Hydrodynamic Formulations
Appendix B: Rhe de Gennes Elasticity Theory for a Smectic A
List of Symbols
References
3 Electromagnetic-Ultrasound Transducers: Principles, Practice, and Applications
I. Introduction
II. Transduction with Plane Waves
III. Surface Acoustic Wave Transduction
IV. Bulk Acoustic Wave Transduction
V. Other Transduction Considerations
VI. Transducer Fabrication and Operation
VII. Applications
List of Symbols and Acronyms
References
4 Ultrasonic Transducers for Materials Testing and Their Characterization
I. Introduction
II. The Transducer as an Element in an Ultrasonic System
III. Ultrasonic Transduction Methods and Devices
IV. Ultrasonic System Response
V. Transducer Characterization
References
5 Ultrasonic Flowmeters
I. Introduction
II. Ultrasonic Flow Velocimeter Principles and Methods
III. Area Averaging for Nonuniform Flow Profiles
IV. Ultrasonic Mass Flowmeters
V. Hybrid Designs
VI. Future Developments
References
Author Index
Subject Index
Contents of Previous Volumes