Ultrasonic and advanced methods
for nondestructive testing
and material characterization
C. H. Chen
Ultrasonic NDE Lab.
For over sixty years, the nondestructive testing (NDT) or nondestructive evaluation (NDE) of materials has been an area of continued growth. The need for NDT has increased dramatically in recent years for various reasons such as product safety, in-line diagnostics, quality control, health monitoring, and security testing, etc. Besides the practical demands the progress in NDT has a lot
to do with its interdisciplinary nature. NDT is an area closely linked to aerospace engineering, civil engineering, electrical engineering, material science and engineering, mechanical engineering, nuclear engineering, petroleum engineering and physics among others. There are at least two dozen NDT methods in use. In fact any sensor that can examine the inside of material nondestructively is useful for NDT. However the ultrasonic methods are still most popular because of its capability, flexibility, and relative cost effectiveness. For this reason this book places a heavy emphasis on the ultrasonic methods which are covered in Part I of the book. Many other or advanced methods of NDT have also been well developed in recent years, such as the use of terahertz waveforms, the thermography method, etc. and they are covered in Part II of the book. The application of signal and image processing to NDT problems is another major development in the last twenty years and the subject is presented in Part III. The NDT area is so broad that the representative chapters as presented in the book can cover only certain aspects of the progress and development. However the book is intended to present the essential aspects of the NDT with the chapters authored by leading experts in the field
for nondestructive testing
and material characterization
C. H. Chen
Ultrasonic NDE Lab.
For over sixty years, the nondestructive testing (NDT) or nondestructive evaluation (NDE) of materials has been an area of continued growth. The need for NDT has increased dramatically in recent years for various reasons such as product safety, in-line diagnostics, quality control, health monitoring, and security testing, etc. Besides the practical demands the progress in NDT has a lot
to do with its interdisciplinary nature. NDT is an area closely linked to aerospace engineering, civil engineering, electrical engineering, material science and engineering, mechanical engineering, nuclear engineering, petroleum engineering and physics among others. There are at least two dozen NDT methods in use. In fact any sensor that can examine the inside of material nondestructively is useful for NDT. However the ultrasonic methods are still most popular because of its capability, flexibility, and relative cost effectiveness. For this reason this book places a heavy emphasis on the ultrasonic methods which are covered in Part I of the book. Many other or advanced methods of NDT have also been well developed in recent years, such as the use of terahertz waveforms, the thermography method, etc. and they are covered in Part II of the book. The application of signal and image processing to NDT problems is another major development in the last twenty years and the subject is presented in Part III. The NDT area is so broad that the representative chapters as presented in the book can cover only certain aspects of the progress and development. However the book is intended to present the essential aspects of the NDT with the chapters authored by leading experts in the field
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