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| Author | : Davide Micheli |
| Publisher | : LAP Lambert Academic Publishing |
| Total Pages | : 472 |
| Release | : 2012-02 |
| Genre | : Composite materials |
| ISBN | : 9783846559390 |
Download Radar Absorbing Materials and Microwave Shielding Structures Design Book in PDF, ePub and Kindle
The book focuses on electromagnetic absorbing and shielding properties of multilayer materials. Nanomaterials are widely used and composite materials' dielectric characterization is deeply discussed. Very little academic literature exists on how to model(design) an electromagnetic absorber using matrix formalism of microwave propagation through multilayer materials. This book therefore, provides an interesting approach to the absorber's design in which different branches of science are applied and where all of them are used to optimize the "quasi perfect absorber" nanotechnology, electromagnetic wave propagation theory, composite materials manufacturing, evolutionary computation. With respect to the present literature, the method presented in this book computes the absorbing capability of materials, taking into account for the reflection and transmission coefficients, considering also oblique incidence of the electromagnetic field. Theoretical modeling of absorbers is experimentally validated. At the end of the book the electromagnetic shielding performance of carbon-carbon material and of high weight percentage carbon nanotubes based composite materials are throughly analyzed.
| Author | : Yuping Duan |
| Publisher | : CRC Press |
| Total Pages | : 382 |
| Release | : 2016-10-14 |
| Genre | : Science |
| ISBN | : 1315341034 |
Download Microwave Absorbing Materials Book in PDF, ePub and Kindle
With the phenomenal development of electromagnetic wave communication devices and stealth technology, electromagnetic wave absorbing materials have been attracting attention as antielectromagnetic interference slabs, stealth materials, self-concealing technology, and microwave darkrooms. This book starts with the fundamental theory of electromagnetic wave absorption in loss medium space, followed by a discussion of different microwave absorbents, such as manganese dioxide, iron-based composite powder, conductive polyaniline, barium titanate powder, and manganese nitride. Then, structural absorbing materials are explored, including multilayer materials, new discrete absorbers, microwave absorption coatings, cement-based materials, and structural pyramid materials. Many of the graphics demonstrate not only the principles of physics and experimental results but also the methodology of computing. The book will be useful for graduate students of materials science and engineering, physics, chemistry, and electrical and electronic engineering; researchers in the fields of electromagnetic functional materials and nanoscience; and engineers in the fields of electromagnetic compatibility and stealth design.
| Author | : K.J. Vinoy |
| Publisher | : Springer |
| Total Pages | : 216 |
| Release | : 1996-08-31 |
| Genre | : Political Science |
| ISBN | : |
Download Radar Absorbing Materials Book in PDF, ePub and Kindle
Radar absorbing materials offers an electromagnetic (EM) perspective to the evolution of radar absorbing materials (RAM). The major aspects covered are the EM analysis, design, fabrication and characterization of RAM. This is followed by an exhaustive discussion on the application areas and current trends in RAM. All the major aspects of RAM technology are covered in this book. The analytical techniques are developed from first principles.
| Author | : Hema Singh |
| Publisher | : Springer |
| Total Pages | : 64 |
| Release | : 2017-10-25 |
| Genre | : Technology & Engineering |
| ISBN | : 9811050805 |
Download Fundamentals of EM Design of Radar Absorbing Structures (RAS) Book in PDF, ePub and Kindle
This book presents a detailed analytical formulation, and step-by-step design procedure for the electromagnetic (EM) design of radar absorbing structures (RAS). It discusses both the equivalent circuit model and Smith chart approach with illustrations to provide a clear understanding of the steps involved in designing multilayered RAS according to the desired specifications. This book is a valuable resource for beginners, academicians, and R&D engineers working in the field of RAS design and development.
| Author | : Go Han Suk |
| Publisher | : |
| Total Pages | : 70 |
| Release | : 1990 |
| Genre | : Electromagnetic waves |
| ISBN | : |
Download The Design of Broadband Radar Absorbing Surfaces Book in PDF, ePub and Kindle
There has been a growing and widespread interest in radar-absorbing material technology. As the name implies, radar absorbing materials or RAM's are coatings whose electric and magnetic properties have been selected to allow the absorption of microwave energy at discrete or broadband frequencies. In military applications low radar cross section (RCS) of a vehicle may be required in order to escape detection while a covert mission is being carried on. These requirements have led to the very low-observable or stealth technology that reduces the probability of detection of an aircraft. The design of radar absorbing materials is limited by constraints on the allowable volume and weight of the surface coating, and it is difficult to design a broadband radar absorbing structure in limited volume. This thesis investigates the use of lossy dielectric materials of high dielectric permittivity in multi- layer composites for the production of low radar cross section (RCS). The analysis is done by computing the plane wave reflection coefficient at the exterior surface of the composite coating by means of a computer program which selects layer parameters which determine low reflection coefficients for electromagnetic radiation under constraint of limited layer thickness as well as maximum frequency bandwidth.
| Author | : Adrián Silva |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 258 |
| Release | : 2016-10-05 |
| Genre | : Science |
| ISBN | : 9535126423 |
Download Advances in Carbon Nanostructures Book in PDF, ePub and Kindle
Carbon atoms have the amazing ability to bond in remarkable different manners that can assume distinct astonishing dimensional arrangements from which absolutely diverse and interesting nanostructured carbon materials are obtained. This book aims to cover the most recent advances in (i) Graphene and derivatives, including graphene-based magnetic composites, membranes, wafer devices, and nanofibers for several applications, as well as some particular properties, such as light emission from graphene; (ii) Carbon nanotubes heaters and fibers for reinforcement of cement and diamond-based thin films; and (iii) Nanofluids consisting of both graphene and carbon nanotubes, apart from reporting some important case studies dealing with carbon nanostructures and their use in sensors, coatings, or electromagnetic wave absorbers.
| Author | : Boreddy Reddy |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 984 |
| Release | : 2011-04-19 |
| Genre | : Technology & Engineering |
| ISBN | : 9533071656 |
Download Advances in Nanocomposites Book in PDF, ePub and Kindle
Advances in Nanocomposites - Synthesis, Characterization and Industrial Applications was conceived as a comprehensive reference volume on various aspects of functional nanocomposites for engineering technologies. The term functional nanocomposites signifies a wide area of polymer/material science and engineering, involving the design, synthesis and study of nanocomposites of increasing structural sophistication and complexity useful for a wide range of chemical, physicochemical and biological/biomedical processes. "Emerging technologies" are also broadly understood to include new technological developments, beginning at the forefront of conventional industrial practices and extending into anticipated and speculative industries of the future. The scope of the present book on nanocomposites and applications extends far beyond emerging technologies. This book presents 40 chapters organized in four parts systematically providing a wealth of new ideas in design, synthesis and study of sophisticated nanocomposite structures.
| Author | : |
| Publisher | : |
| Total Pages | : 23 |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download A Review of Optimisation Techniques for Layered Radar Absorbing Materials, Including the Genetic Algorithm Book in PDF, ePub and Kindle
The ability of a material to absorb radar waves (microwave radiation) depends on the permittivity & permeability of the material and its structure. A multilayer structure of alternating resistive sheets & low dielectric spacers has been found to make an effective radar absorber if the layers are spaced a quarter wavelength apart and the resistance of the sheets has specific values. To make a multilayer absorber with the widest possible bandwidth, it is necessary to use an optimization technique due to the complexity of the equations describing the reflectivity from an absorber. This paper reviews optimal design techniques for multilayer microwave absorbers. These methods include analytical approximations, gradient optimization routines, simulated annealing, and the genetic algorithm. Particular attention is paid to the genetic algorithm, a highly parallel stochastic technique that permits multi-objective optimization and has a high probability of finding the global minimum.
| Author | : Man-Gui Han |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 364 |
| Release | : 2020-01-22 |
| Genre | : Science |
| ISBN | : 1789852269 |
Download Electromagnetic Materials and Devices Book in PDF, ePub and Kindle
Electromagnetic materials can be widely found in daily life, especially in electronic devices. The high-frequency properties (permittivity or permeability) of these materials strongly depend on structure, composition, shape, and orientation. Therefore, this book intends to present readers with advances not only in materials science (including metamaterials), but also in measurements and novel functional applications that demand the special properties of electromagnetic materials.
| Author | : Sundeep K. Dhawan |
| Publisher | : Bentham Science Publishers |
| Total Pages | : 594 |
| Release | : 2022-11-08 |
| Genre | : Technology & Engineering |
| ISBN | : 9815036432 |
Download Smart Materials Design for Electromagnetic Interference Shielding Applications Book in PDF, ePub and Kindle
With the rapid developments in microchips, mobile communication and satellite communication, electromagnetic interference (EMI) or Radio Frequency Interference (RFI) has received significant attention to ensure high performance of electronic items and to avoid any adverse effect on human health. EMI is one of the main factors that weaken electronic system performance and is considered as a modern form of environmental pollution. Many efforts have been made to reduce EMI, including industrial regulations and R&D funding.The expansion of the IT industry has promoted the development of microwave absorbing materials (MAMs) and EMI shielding materials to improve the resistance of smart devices to EMI. This book presents a comprehensive review of the recent developments in EMI shielding and the design of microwave absorbing materials. Chapters cover the basic mechanism of shielding and radiation absorption, measurement procedures, factors affecting the shielding and different materials for shielding and absorption (e.g. MWCNT, conjugated polymers, graphene, MXene based hybrid materials, Carbon foam, graphene based thermoplastic polyurethane nanocomposites, carbon-carbon composites, nano ferrite composites and conducting Ferro fluids). An analysis of EMI shielding using fillers composed of different materials is also presented. In addition, key issues and current challenges to achieve better shielding and absorption performance for various materials are explained, giving the readers a broader perspective of the subject. The book is suitable as a detailed reference for students in electronics engineering, materials science and other technical courses, and professionals working on materials for designing EMI shielding mechanisms.
