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Author: J. B. Ramsey Publisher: ISBN: Category : Metals Languages : en Pages : 158
Book Description
The results of investigations to determine the effects of several metallurgical and acoustical variables on the ultrasonic signal strength using commercially available ultrasonic flaw detection equipment are reported. Applied to various metals used in aerospace structures and components, these investigations resulted in the separation and determination of important acoustical properties that were expected to indicate the cause for differences in the trans mission of ultrasonic energy in the various materials. A method was developed for applying correction factors to test blocks of one metal in order to estimate the size of defects in other metals. Beam collimation techniques were studied to determine optimum conditions for detecting defects and displaying them on both cathode ray image and C-Scan (plan view) facsimile paper recordings. Some investigations were also performed to separate and identify shear and surface (Rayleigh) waves.
Author: J. B. Ramsey Publisher: ISBN: Category : Metals Languages : en Pages : 158
Book Description
The results of investigations to determine the effects of several metallurgical and acoustical variables on the ultrasonic signal strength using commercially available ultrasonic flaw detection equipment are reported. Applied to various metals used in aerospace structures and components, these investigations resulted in the separation and determination of important acoustical properties that were expected to indicate the cause for differences in the trans mission of ultrasonic energy in the various materials. A method was developed for applying correction factors to test blocks of one metal in order to estimate the size of defects in other metals. Beam collimation techniques were studied to determine optimum conditions for detecting defects and displaying them on both cathode ray image and C-Scan (plan view) facsimile paper recordings. Some investigations were also performed to separate and identify shear and surface (Rayleigh) waves.
Author: Wolf Kleinert Publisher: Springer ISBN: 3319328360 Category : Technology & Engineering Languages : en Pages : 126
Book Description
This book presents a precise approach for defect sizing using ultrasonics. It describes an alternative to the current European and American standards by neglecting their limitations. The approach presented here is not only valid for conventional angle beam probes, but also for phased array angle beam probes. It introduces an improved method which provides a significant productivity gain and calculates curves with high accuracy. Its content is of interest to all those working with distance gain size (DGS) methods or are using distance amplitude correction (DAC) curves.
Author: Pietro Burrascano Publisher: Springer ISBN: 3319105663 Category : Technology & Engineering Languages : en Pages : 345
Book Description
This book deals with a number of fundamental issues related to the practical implementation of ultrasonic NDT techniques in an industrial environment. The book discusses advanced academic research results and their application to industrial procedures. The text covers the choice and generation of the signals energizing the system to probe position optimization, from quality assessment evaluation to tomographic inversion. With a focus to deepen a number of fundamental aspects involved in the specific objective of designing and developing an ultrasonic imaging system for nondestructive testing, aimed to automatically classify the entire production of an industrial production line, targeted to the field of precision mechanics. The contents of this book is the result of the common effort of six University Research Groups that focused their research activities for two years on this specific objective, working in direct conjunction with primary industrial firms, in a research project funded by the Italian government as a Strategic Research Project.
Author: Mark V. Brook Publisher: John Wiley & Sons ISBN: 111810479X Category : Technology & Engineering Languages : en Pages : 322
Book Description
Ultrasonic testing is a relatively new branch of science and industry. The development of ultrasonic testing started in the late 1920s. At the beginning, the fundamentals of this method were borrowed from basic physics, geometrical and wave optics, acoustics and seismology. Later it became clear that some of these theories and calculation methods could not always explain the phenomena observed in many specific cases of ultrasonic testing. Without knowing the nuances of the ultrasonic wave propagation in the test object it is impossible to design effective inspection technique and search units for it realization. This book clarifies the theoretical differences of ultrasonics from the other wave propagation theories presenting both basics of physics in the wave propagation, elementary mathematic and advanced practical applications. Almost every specific technique presented in this book is proofed by actual experimental data and examples of calculations.
Author: J. Blitz Publisher: Springer Science & Business Media ISBN: 9780412604706 Category : Technology & Engineering Languages : en Pages : 286
Book Description
Ultrasonic Methods of Non-Destructive Testing covers the basic principles and practices of ultrasonic testing, starting with the basic theory of vibration and propagation, design and properties and probes, and then proceeding to the principles and practice of the various ultrasonic techniques for different types of components and structures, both metallic and non-metallic. The design and operation of various types of equipment are covered and references to appropriate national and international standards are provided. Numerous applications are discussed comprehensively and special attention is paid to latest developments. A large number of references is provided so as to enable the reader to obtain further information.
Author: Lester W. Schmerr Jr Publisher: Springer Science & Business Media ISBN: 0387490639 Category : Technology & Engineering Languages : en Pages : 602
Book Description
Using a systems level approach, this book employs aspects of linear systems theory and wave propagation and scattering theory to develop a comprehensive model of an entire ultrasonic measurement system. This integrated approach leads to a new model-based engineering technology for designing, using and optimizing ultrasonic nondestructive evaluation inspections. In addition, the book incorporates MATLAB examples and exercises.
Author: Brian Lee Boyd Publisher: ISBN: Category : Languages : en Pages : 158
Book Description
These models are to be derived from metallographic cross-section images taken from destructive sectioning of the defect regions. The reconstruction of defect begins with the boundary determination of the respective defect regions on each of the metallographs by utilizing some image processing algorithms. The three-dimensional geometrical model then follows by using the state-of -the-art non-uniform rational b-spline techniques. Once the geometrical models are constructed, the complete material properties can be interpolated within the volume or on the surface of the defects. In this thesis, detailed procedures of defect reconstruction are discussed and preliminary results are presented. The use of the defect reconstruction as an input to ultrasonic signal modeling will also be illustrated.
Author: J. B. Ramsey
Author: J. B. Ramsey
Author: Wolf Kleinert
Author: Pietro Burrascano
Author: Aliakbar Afshari
Author: Mark V. Brook
Author: J. Blitz
Author: Lester W. Schmerr Jr
Author: Sumire Kawamoto
Author: Frank O. Reed
Author: Brian Lee Boyd