Ultrasonic Nondestructive Evaluation; Engineering and Biological Material Characterization






Preface

Today, ultrasonic signal is being used for characterizing (detecting internal

defects in) a variety of engineering structures, such as airplanes, buildings,

nuclear power plants, pressure-vessels, and pipes, for inspecting human

body parts, such as tumors, bones, and unborn fetuses. In spite of the ever

increasing popularity and wide range of the use of this technology by

researchers, medical technicians, factory workers, and engineers, we do not

have any book that covers both the fundamentals and the advanced applications

of this technology. Currently, books either concentrate on fundamental

equation derivations, and thus are too theoretical, or consider only

advanced applications, hoping that the readers have already gained the

theoretical knowledge from another source. One reason that there have been

no books written that cover both fundamental and advanced applications is

there are many advanced applications of ultrasonic nondestructive evaluation

(NDE); it is very difficult for any one author to cover all of those topics.

The advanced topics are mostly covered in conference proceedings where

different authors discuss different applications. Many advanced topics, such

as guided wave technique, nonlinear ultrasonic technique, laser-ultrasonic

technique, and acoustic microscopy, have matured enough to be included in a book.



The purpose of this book is to bridge the gap between the two types of

books available in the market today — the one kind lacks the advanced

analysis and the other kind lacks the fundamentals. This book starts with

the fundamental principles of mechanics; derives the basic equations of the

mechanics of elastic wave propagation; and then, step-by-step, expands its

horizon to cover the state-of-the-art advanced topics of ultrasonic NDE that

are in the forefront of today’s research.



Chapter 1 derives the fundamental equations of mechanics related to ultrasonic

NDE. It is written in such a way that any college graduate of science

or engineering should be able to follow it. A good number of examples and

exercise problems are provided for easier understanding and good comprehension

of the subject. After studying this chapter the readers will be able to follow the

remaining chapters on specialized topics.



Each chapter has been well written by authors who are experts in their

fields and have many years of research experience related to the topics that

they cover. These authors have nicely described many applications of ultrasonic

techniques, from the traditional to the very advanced. All chapters are written

in simple English that is understandable to practitioners, graduate

students, and research scientists.


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