Computer Field Models Of Electromagnetic Devices

Computer Field Models of Electromagnetic Devices, volume 34 in the book series Studies in Applied Electromagnetics and Mechanics is devoted to modeling and simulation, control systems, testing, measurements, monitoring, diagnostics and advanced software

This is the first comprehensive monograph that features state-of-the-art multigrid methods for enhancing the modeling versatility, numerical robustness, and computational efficiency of one of the most popular classes of numerical electromagnetic field modeling methods: the method of finite elements. The focus of the publication is the development of robust preconditioners for the iterative solution of electromagnetic field boundary value problems (BVPs) discretized by means of finite methods. Specifically, the authors set forth their own successful attempts to utilize concepts from multigrid and multilevel methods for the effective preconditioning of matrices resulting from the approximation of electromagnetic BVPs using finite methods. Following the authors' careful explanations and step-by-step instruction, readers can duplicate the authors' results and take advantage of today's state-of-the-art multigrid/multilevel preconditioners for finite element-based iterative electromagnetic field solvers. Among the highlights of coverage are: * Application of multigrid, multilevel, and hybrid multigrid/multilevel preconditioners to electromagnetic scattering and radiation problems * Broadband, robust numerical modeling of passive microwave components and circuits * Robust, finite element-based modal analysis of electromagnetic waveguides and cavities * Application of Krylov subspace-based methodologies for reduced-order macromodeling of electromagnetic devices and systems * Finite element modeling of electromagnetic waves in periodic structures The authors provide more than thirty detailed algorithms alongside pseudo-codes to assist readers with practical computer implementation. In addition, each chapter includes an applications section with helpful numerical examples that validate the authors' methodologies and demonstrate their computational efficiency and robustness. This groundbreaking book, with its coverage of an exciting new enabling computer-aided design technology, is an essential reference for computer programmers, designers, and engineers, as well as graduate students in engineering and applied physics.

Covering the development of field computation in the past forty years, this book is a concise, comprehensive and up-to-date introduction to methods for the analysis and synthesis of electric and magnetic fields. A broad view of the subject of field models in electricity and magnetism, ranging from basic theory to numerical applications, is offered. The approach throughout is to solve field problems directly from partial differential equations in terms of vector quantities.

Electromagnetic Nondestructive Evaluation (ENDE) is the process of inducing electric currents, magnetic fields or both within a test object to assess its condition by observing the electromagnetic response. An important tool in fields as diverse as engineering, medicine and art, it does not permanently alter the object being tested, thus proving invaluable for product evaluation, troubleshooting and research. This book presents the proceedings of the 17th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE), held in Rio de Janeiro, Brazil, in July 2012. ENDE workshop is an important event for all scientists with interests in non-destructive testing. The first workshop took place in 1995 in London UK, and has been followed by workshops held in various parts of the world, but this is the first time this workshop series has come to a Latin American country. The workshops bring together scientists and engineers active in research, development and industrial applications of ENDE. The book is divided into five sections: advanced sensors; analytical and numerical modeling; systems and techniques for electromagnetic NDE; characterization of materials and NDE of cracks; and new developments and others. Each section includes papers on a variety of subjects. From the papers submitted for publication, thirty six peer reviewed articles have been accepted, six of which emanate from Latin American authors. The book will be of interest to all those wishing to keep abreast of developments in the field, or who rely on the advanced techniques based on electromagnetic principles applied to nondestructive evaluation in their work.

The demand for new and effective methods for the evaluation, maintenance and live-time testing of objects in fields as diverse as engineering, medicine and art, continues to grow. Electromagnetic non-destructive evaluation is a process by which an object can be assessed without permanent alteration by means of inducing electric currents or magnetic fields within the object and observing the electromagnetic response. This book presents selected papers from the 18th International Workshop on Electromagnetic Non-destructive Evaluation (ENDE), which was held in Bratislava, Slovak Republic, on June 25-28, 2013. The aim of the workshop was to provide an international forum for the discussion of the state-of-the-art and perspectives in the field from the view of science, technology and engineering. The book is divided into five main sections: advanced sensors; analytical and numerical modeling and biomedical applications; innovative industrial applications; new developments; and, solutions of inverse problems. Containing 40 peer-reviewed papers, it will be of interest to all those whose work involves electromagnetic non-destructive evaluation, whatever their discipline.

There have been many developments in the field of electromagnetic nondestructive evaluation in recent years, and it has become an increasingly valuable tool in many areas of industry, engineering and construction. This book presents selected papers from the 20th International workshop on Electromagnetic Nondestructive Evaluation (ENDE) held in Sendai, Japan, in September 2015. ENDE workshops aim to provide an international forum for discussion on the state-of-the-art and perspectives in the field of electromagnetic nondestructive methods from the point of view of science and technology, as well as their applications in industry and engineering, which have contributed to the development of nondestructive testing and evaluation techniques using electromagnetic fields. The book will be of interest to all those whose work involves the use or development of electromagnetic nondestructive evaluation techniques, in whatever field.

Electromagnetic Nondestructive Evaluation (ENDE) is an invaluable tool for assessing the condition of a test object without permanently altering or harming it in any way. It has become an indispensable technique for troubleshooting and research in diverse fields, such as engineering, medicine and art. This book presents one plenary lecture and 41 selected papers from the 19th International Workshop on Electromagnetic Nondestructive Evaluation, held in Xi’an, China, in June 2014. The workshop focused on research into the theory and application of ENDE methods, and provided a forum for the exchange of ideas and discussion of recent developments. The papers are arranged in five sections: material characterization; analytical and numerical modeling; inverse problems and signal processing; new developments and innovative industrial applications; and advanced sensors in ENDE.

Electromagnetic Nondestructive Evaluation (ENDE) provides an important method for assessing the condition of objects by observing the electromagnetic response to electric currents and/or magnetic fields introduced within them. Because it does not permanently alter the objects being tested, it is an invaluable tool for product evaluation, troubleshooting and research, and is employed in many fields from engineering and medicine to art. This volume presents selected papers from the International Workshop on Electromagnetic Nondestructive Evaluation (ENDE2016), held in Lisbon, Portugal, in September 2016. This 21st edition of the workshop focused on the theoretical and application research into methods of electromagnetic non-destructive evaluation and, like previous editions, provided a forum for exchanging ideas and discussing recent developments. The book is divided into 6 sections which cover advanced ENDE sensors; material characterization; new developments; analytical and numerical modeling; inverse problems; signal processing; monitoring and diagnosis of mechanical structures; and innovative industrial applications of ENDE. Providing an overview of recent research and developments in the field, the book will be of interest to all those involved in ENDE research or applying it in their work.