Ultrasound and Elastic Waves: Frequently Asked Questions

This book presents a complete, easy-to-understand view of ultrasound technology. It is ideal for beginners and experienced users alike, as well as for those needing to understand the capabilities of this technology. The author explains key theories and presents factual information in a user-friendly format that is heavily illustrated and written in a unique question-and-answer style. Mathematical detail is contained in the appendices. Ultrasound and Elastic Waves provides engineers and technicians with the information they need to use ultrasound devices properly and serves as a reference for others who need to understand any aspect of the subject.

Ultrasound has found an increasing number of applications in recent years due to greatly increased computing power. Ultrasound devices are often preferred over other devices because of their lower cost, portability, and non-invasive nature. Patients using ultrasound can avoid the dangers of radiological imaging devices such as x-rays, CT scans, and radioactive media injections. Ultrasound is also a preferred and practical method of detecting material fatique and defects in metals, composites, semiconductors, wood, etc.

Retired space engineer Lempriere offers not an academic text, but an introduction and reference on ultrasound or ultrasonics, called sonography in the medical community. He assumes readers to be nonspecialists, and the few formulas he provides can be skipped; for readers with a knowledge of differential calculus, vectors, and matrix algebra, he does append derivations of the formulas. In a question-and-answer format, he explores general principles, wave propagation concepts, interactions between types of waves and between waves and surfaces, transducers and electronic hardware (without reference to specific proprietary information, and data processing software concepts).
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atique and defects in metals, composites, semiconductors, wood, etc.

lains key theories and presents factual information in a user-friendly format that is heavily illustrated and written in a unique question-and-answer style. Mathematical detail is contained in the appendices. Ultrasound and Elastic Waves provides engineers and technicians with the information they need to use ultrasound devices properly and serves as a reference for others who need to understand any aspect of the subject.

Ultrasound has found an increasing number of applications in recent years due to greatly increased computing power. Ultrasound devices are often preferred over other devices because of their lower cost, portability, and non-invasive nature. Patients using ultrasound can avoid the dangers of radiological imaging devices such as x-rays, CT scans, and radioactive media injections. Ultrasound is also a preferred and practical method of detecting material fatique and defects in metals, composites, semiconductors, wood, etc.

Dr. Lempriere is a retired aerospace engineer with expertise in the mechanical properties and behavior of materials. He worked for 33 years in the aerospace industry at both Boeing and Lockheed.

Bellevue, Washigton, U.S.A.

List of Figures

Preface

Acknowledgments

1 Introduction

2 Definitions and Background

3 Wave Propagation Concepts

4 Wave Interactions

5 Hardware: Equipment Concepts

6 Software: Data Processing

App. 1 Stress, Strain, and Elasticity (Also Vectors and Tensors)

App. 2 The Generalized Hooke's Law

App. 3 States of Stress or Strain in Waves

App. 4 Balance of Forces and Newton's Law of Inertia

App. 5 Theory of Wave Propagation

App. 6 Solutions to the Wave Equations

App. 7 Dispersion, Group Velocity

App. 8 Transducer Beam Forming

App. 9 Solutions for Anisotropy

App. 10 Oblique Interactions between Waves and Boundaries

App. 11 Lateral Stress and Strain in Rods under Axial Loads

App. 12 Bending Waves in Beams and Plates

App. 13 Time-Domain Analysis

References

Index