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Electromagnetic Wave Scattering by Aerial and Ground Radar Objects presents the theory, original calculation methods, and computational results of the scattering characteristics of different aerial and ground radar objects. This must-have book provides essential background for computing electromagnetic wave scattering in the presence of different kinds of irregularities, as well as Summarizes fundamental electromagnetic statements such as the Lorentz reciprocity theorem and the image principle Contains integral field representations enabling the study of scattering from various layered structures Describes scattering computation techniques for objects with surface fractures and radar-absorbent coatings Covers elimination of "terminator discontinuities" appearing in the method of physical optics in general bistatic cases Includes radar cross-section (RCS) statistics and high-range resolution profiles of assorted aircrafts, cruise missiles, and tanks Complete with radar backscattering diagrams, echo signal amplitude probability distributions, and other valuable reference material, Electromagnetic Wave Scattering by Aerial and Ground Radar Objects is ideal for scientists, engineers, and researchers of electromagnetic wave scattering, computational electrodynamics, and radar detection and recognition algorithms.
Electromagnetics and Microwaves --- Communications System Design --- Aerospace Engineering --- ENG --- ElectricalEngineering --- MechanicalEngineering --- SCI-TECH --- STM --- Computational Electrodynamics --- Electromagnetic Scattering Theory --- Electromagnetic Wave Scattering --- Physical Optics Approximation --- Radar Cross-Section Prediction --- Radar Detection Algorithms --- Radar Microwaves --- Radar Recognition Algorithms --- Radar Scattering Computation --- Radar Scattering Software --- RCS Prediction --- Reduction of Radar Observability --- Sergey V. Nechitaylo --- Stealth Technology --- Valery M. Orlenko --- Vitaly A. Vasilets
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Advances in nanotechnology have boosted the development of more efficient materials, with emerging sectors (electronics, energy, aerospace, etc.) demanding novel materials to fulfill the complex technical requirements of their products. This is the case of polymeric foams, which may display good structural properties alongside functional characteristics through a complex composition and (micro)structure in which a gas phase is combined with rigid ones, mainly based on nanoparticles, dispersed throughout the polymer matrix. In recent years, there has been an important impulse in the development of nanocomposite foams, extending the concept of nanocomposites to the field of cellular materials. This, alongside developments in new advanced foaming technologies which have allowed the generation of foams with micro, sub-micro, and even nanocellular structures, has extended the applications of more traditional foams in terms of weight reduction, damping, and thermal and/or acoustic insulation to novel possibilities, such as electromagnetic interference (EMI) shielding. This Special Issue, which consists of a total of 22 articles, including one review article written by research groups of experts in the field, considers recent research on novel polymer-based foams in all their aspects: design, composition, processing and fabrication, microstructure, characterization and analysis, applications and service behavior, recycling and reuse, etc.
grey relational analysis --- multi-objective particle swarm optimization --- acoustic performances --- Ethylene Propylene Diene Monomer --- polyurethane foam composites --- DOPO --- itaconic acid --- ethyl cellulose --- phenolic foams --- composites --- adjacent façade --- PUR --- energy conservation --- heat transfer --- burning characteristic --- semi-rigid polyurethane foams --- aluminum microfibers --- quasi-static compression tests --- mechanical properties --- energy absorption capability --- foams --- polyamide --- crystalline --- thermal conductivity --- mechanical property --- functional --- biomaterials --- composites --- EMI --- cellulose foam --- polypropylene --- foaming quality --- impact property --- intrinsic toughness --- flame-retardant ABS microcellular foams --- phosphorus flame retardants --- MuCell® injection-molding foaming --- graphene oxide --- rigid polyurethane foam --- thermogravimetric analysis --- activation energies --- extrusion foaming --- super critical CO2 --- lignin --- sound absorption coefficient --- mechanical property --- Pluronic --- surfactants --- foams --- SANS --- multilayers --- epoxy composite foam adhesive --- core–shell rubber --- impact wedge–peel test --- automobile structural adhesives --- flame retardancy --- foams --- phosphorus --- ternary synergistic effect --- polypropylene --- fluoelastomer --- scCO2 foaming --- heterogeneous nucleation --- polypropylene --- cellulose nanofiber --- foam injection molding --- mechanical properties --- polystyrene foams --- 1,3,5-benzene-trisamides --- cell nucleation --- foam extrusion --- foam morphology --- supramolecular additives --- thermal insulation --- compression properties --- piezoelectric --- functional foam --- piezocomposite --- PZT --- expandable microspheres --- permittivity --- polyetherimide foams --- graphene --- multifunctional foams --- ultrasonication --- scCO2 --- electrical conductivity --- polymer waste --- polyurethane foam --- leaching test --- microstructure --- absorbent PMI foam --- metallic tube --- electromagnetic wave absorption --- mechanical properties --- failure mechanism --- polymers --- foams --- shock compression --- equation of state --- epoxy --- foams --- expandable microspheres --- graphene --- nanotubes --- conductivity --- syntactic foams --- n/a
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The propagation of ultrasonic guided waves in solids is an important area of scientific inquiry, primarily due to their practical applications for nondestructive characterization of materials, such as nondestructive inspection, quality assurance testing, structural health monitoring, and providing a material state awareness. This Special Issue of Applied Sciences covers all aspects of ultrasonic guided waves (e.g., phased array transducers, meta-materials to control wave propagation characteristics, scattering, attenuation, and signal processing techniques) from the perspective of modeling, simulation, laboratory experiments, or field testing. In order to fully utilize ultrasonic guided waves for these applications, it is necessary to have a firm grasp of their requisite characteristics, which include that they are multimodal, dispersive, and are comprised of unique displacement profiles through the thickness of the waveguide.
electromagnetic wave --- group velocity --- time-frequency domain reflectometry --- dispersive medium --- ultrasonic guided wave --- nondestructive testing --- square steel bar --- non-detection zone --- surface flaw --- Rayleigh wave --- scattering --- modified BEM --- reconstruction --- adhesive joint --- single lap joint --- non-destructive testing --- damage identification --- Lamb waves --- scanning laser vibrometry --- signal processing --- ultrasonic guided waves --- axial transmission --- ultrasonic guided waves --- fiber optics --- fiber Bragg grating --- nondestructive testing --- structural health monitoring --- pipe inspection --- partial wave method --- slowness curves --- lamb wave --- stoneley wave --- mode sorting --- acoustic leakage --- rayleigh wave --- surface waves --- elastodynamics --- guided waves --- lamb wave --- dispersion curves --- phase velocity --- group velocity --- signal processing --- SH0 mode --- circumferential scanning --- synthetic aperture focusing --- exploding reflector model --- Lamb wave --- local wavenumber --- air-coupled transducer --- wavenumber domain filtering --- hybrid and non-contact system --- signal processing --- SNR --- split-spectrum processing --- ultrasonic guided waves --- signal processing --- defect detection --- spatial domain --- array analysis --- pipeline inspection --- ultrasonic guided waves (UGWs) --- metamaterial --- resonator --- low-frequency --- lamb wave --- adaptive filtering --- leaky normalized mean square --- ultrasonic guided waves --- pipeline inspection --- SNR enhancement --- signal processing --- guided wave --- multi-wire cable --- wave structure --- contact acoustic nonlinearity --- energy transfer --- rail --- ultrasonic guided wave --- semi-analytical finite element --- single mode extraction algorithm --- defect location --- signal processing --- defect detection --- torsional wave --- power spectrum --- sliding window --- pipeline inspection --- ultrasonic guided-waves (UGWs) --- magnetostrictive patch transducer --- shear mode --- soft magnetic patch --- dynamic magnetic field optimization --- signal strength enhancement --- acoustic emission --- nondestructive testing --- leakage location --- fault diagnosis --- n/a --- lamb waves --- composite --- ultrasonic testing --- numerical modelling --- pressure vessels
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