Описание: EMATs for Science and Industry comprises the physical principles of electromagnetic acoustic transducers (EMATs) and the applications to scientific and industrial ultrasonic measurements on materials. The text is arranged in four parts: -PART I is intended to be a self-contained description of the basic elements of coupling mechanism along with practical designing of EMATs for various purposes. There are several implementations to compensate for the low transfer efficiency of the EMATs. Useful tips to make an EMAT are also presented. -PART II describes the principle of electromagnetic acoustic resonance (EMAR), which makes the most of contactless nature of EMATs and is the most successful amplification mechanism for precise velocity and attenuation measurements. -PART III applies EMAR to studying the physical acoustics. New measurements emerged on three major subjects; in situ monitoring of dislocation behavior, determination of anisotropic elastic constants, and acoustic nonlinearity evolution. -PART IV deals with a variety of individual topics encountered in industrial applications, for which the EMATs are believed to the best solutions.The authors' work in this area has shown Electromagnetic acoustic resonance (EMAR) to be applicable not only to the acoustoelastic stress measurements, but also to many other nondestructive evaluation issues, including the determination of attenuation in solids. Noncontact measurement with high enough signal intensity was striking. Basic preconditions of theoretical approaches were realized by eliminating artifacts caused by the contact transducers. EMAR thus illuminated antiquated theories, which were accepted to be of little use or limited to qualitative interpretation of observations. It also uncovered interesting phenomena. Continuous monitoring of attenuation and acoustic nonlinearity resulted in the detection of ongoing microstructure evolutions in deforming or fatiguing metals.The aim of this book is to provide practical answers to the needs of ultrasonic measurements as well as an understanding of a novel methodology.
Автор: Stefan Kocis; Zdenko Figura Название: Ultrasonic Measurements and Technologies ISBN: 0412638509 ISBN-13(EAN): 9780412638503 Издательство: Springer Рейтинг: Цена: 22203.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Introduces the methods and instruments used in ultrasonic measurement for engineering application. This book describes the various types of ultrasound devices and covers the different classes of measurement problems in detail. It is suitable as a tutorial and reference for engineers and students new to the field.
Описание: This multi-contributed volume provides a practical, applications-focused introduction to nonlinear acoustical techniques for nondestructive evaluation. Compared to linear techniques, nonlinear acoustical/ultrasonic techniques are much more sensitive to micro-cracks and other types of small distributed damages. Most materials and structures exhibit nonlinear behavior due to the formation of dislocation and micro-cracks from fatigue or other types of repetitive loadings well before detectable macro-cracks are formed. Nondestructive evaluation (NDE) tools that have been developed based on nonlinear acoustical techniques are capable of providing early warnings about the possibility of structural failure before detectable macro-cracks are formed. This book presents the full range of nonlinear acoustical techniques used today for NDE. The expert chapters cover both theoretical and experimental aspects, but always with an eye towards applications. Unlike other titles currently available, which treat nonlinearity as a physics problem and focus on different analytical derivations, the present volume emphasizes NDE applications over detailed analytical derivations. The introductory chapter presents the fundamentals in a manner accessible to anyone with an undergraduate degree in Engineering or Physics and equips the reader with all of the necessary background to understand the remaining chapters. This self-contained volume will be a valuable reference to graduate students through practising researchers in Engineering, Materials Science, and Physics.Represents the first book on nonlinear acoustical techniques for NDE applicationsEmphasizes applications of nonlinear acoustical techniquesPresents the fundamental physics and mathematics behind nonlinear acoustical phenomenon in a simple, easily understood mannerCovers a variety of popular NDE techniques based on nonlinear acoustics in a single volume
Автор: Neelesh Kumar Jain; Kapil Gupta; Название: Spark Erosion Machining ISBN: 1498787932 ISBN-13(EAN): 9781498787932 Издательство: Taylor&Francis Рейтинг: Цена: 22968.00 р. Наличие на складе: Поставка под заказ.
Описание: The book covers novel applications in spark erosion based machining processes, ranging from production of micro electro mechanical systems to machining of aerospace materials. The principle, methodology and mechanism of spark erosion-based machining processes and their hybrid versions are described.
Автор: Hameed Sultan Mohamed Thariq, Azmi Azwan Iskandar, Majid Mohd Shukry Abd Название: Machining and Machinability of Fiber Reinforced Polymer Composites ISBN: 9813341521 ISBN-13(EAN): 9789813341524 Издательство: Springer Цена: 22359.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book covers current advances and practices in machining fibre-reinforced polymer composites under various conventional and nonconventional processes.
Автор: Lester W. Schmerr Jr. Название: Fundamentals of Ultrasonic Phased Arrays ISBN: 331934465X ISBN-13(EAN): 9783319344652 Издательство: Springer Рейтинг: Цена: 14365.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
This book describes in detail the physical and mathematical foundations of ultrasonic phased array measurements. The book uses linear systems theory to develop a comprehensive model of the signals and images that can be formed with phased arrays. Engineers working in the field of ultrasonic nondestructive evaluation (NDE) will find in this approach a wealth of information on how to design, optimize and interpret ultrasonic inspections with phased arrays. The fundamentals and models described in the book will also be of significant interest to other fields, including the medical ultrasound and seismology communities. A unique feature of this book is that it presents a unified theory of imaging with phased arrays that shows how common imaging methods such as the synthetic aperture focusing technique (SAFT), the total focusing method (TFM), and the physical optics far field inverse scattering (POFFIS) imaging method are all simplified versions of more fundamental and quantitative imaging approaches, called imaging measurement models.
To enhance learning, this book first describes the fundamentals of phased array systems using 2-D models, so that the complex 3-D cases normally found in practice can be more easily understood. In addition to giving a detailed discussion of phased array systems, Fundamentals of Ultrasonic Phased Arrays also provides MATLAB(R) functions and scripts, allowing the reader to conduct simulations of ultrasonic phased array transducers and phased array systems with the latest modeling technology.
Автор: R.W. Nichols; S. Crutzen Название: Ultrasonic Inspection of Heavy Section Steel Components ISBN: 1851661557 ISBN-13(EAN): 9781851661558 Издательство: Springer Рейтинг: Цена: 84552.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Автор: Eskin, Georgy I. (all-russia Institute Of Light Alloys, Moscow) Eskin, Dmitry G. (brunel University, Uxbridge, Uk) Название: Ultrasonic treatment of light alloy melts, second edition ISBN: 1138075973 ISBN-13(EAN): 9781138075979 Издательство: Taylor&Francis Рейтинг: Цена: 14545.00 р. Наличие на складе: Поставка под заказ.
Описание:
Spawned by growing interest in ultrasonic technology and new developments in ultrasonic melt processing, the Second Edition of Ultrasonic Treatment of Light Alloy Melts discusses use of ultrasonic melt treatment in direct-chill casting, shape casting, rapid solidification, zone refining, and more, exploring the effects of power ultrasound on melt degassing, filtration, and refinement in aluminum and magnesium alloys. The fully revised and restructured Second Edition:
Contains new, in-depth coverage of composite and nanocomposite materials
Provides a historical review of the last century of ultrasonic applications to metallurgy
Emphasizes the fundamentals, mechanisms, and applications of ultrasonic melt processing in different light-metal technologies
Features new chapters on ultrasonic grain refinement, refinement of primary solid phases, and semi-solid processing of billets with nondendritic structure
Includes significant updates reflecting results obtained over the past two decades on different scales, from laboratory to full-scale industrial implementations
Complete with many new figures and examples, Ultrasonic Treatment of Light Alloy Melts, Second Edition delivers a comprehensive treatise on ultrasonic melt processing and cavitation, presenting essential guidelines for practical use and further development of the technology.
Автор: Kyung-Young Jhang Название: Measurement of Nonlinear Ultrasonic Characteristics ISBN: 9811514607 ISBN-13(EAN): 9789811514609 Издательство: Springer Рейтинг: Цена: 25155.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Conventional ultrasonic methods based on ultrasonic characteristics in the linear elastic region are mainly sensitive to mature defects but are much less responsive to micro-damage or incipient material degradation.
Автор: Wolf Kleinert Название: Defect Sizing Using Non-destructive Ultrasonic Testing ISBN: 3319328344 ISBN-13(EAN): 9783319328348 Издательство: Springer Рейтинг: Цена: 14365.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book presents a precise approach for defect sizing using ultrasonics. The approach presented here is not only valid for conventional angle beam probes, but also for phased array angle beam probes. Its content is of interest to all those working with distance gain size (DGS) methods or are using distance amplitude correction (DAC) curves.
