Plasma-spray coating [[electronic resource] ] : principles and applications / / Robert B. Heimann

• Record Nr.: UNINA9910144720103321
• Autore: Heimann R. B (Robert Bertram), <1938->
• Pubbl/distr/stampa: Weinheim ; ; New York, : VCH, c1996
• ISBN: 1-281-75849-3; 9786611758493; 3-527-61485-0; 3-527-61484-2
• Edizione: [2nd ed.]
• Descrizione fisica: 1 online resource (356 p.)
• Disciplina: 621.044; 667.9
• Soggetti: Plasma spraying; Coatings; Electronic books.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Plasma- Spray Coating; Contents; List of Symbols and Abbreviations; 1 Introduction; 1.1 Coatings in the Industrial Environment; 1.2 Surface Coating Techniques; 1.3 Brief History of Thermal Spraying; 1.4 Synergistic Nature of Coatings; 1.5 Applications of Thermally Sprayed Coatings; References; 2 Principles of Thermal Spraying; 2.1 Characterization of Flame versus Plasma Spraying; 2.2 Concept of Energy Transfer Processes; 2.3 Unique Features of the Plasma Spray Process; References; 3 The First Energy Transfer Process: Electron-Gas Interactions; 3.1 The Plasma State; 3.1.1 Characteristic Plasma Parameters3.1.1.1 Langmuir Plasma Frequency; 3.1.1.2 Debye Screening Length; 3.1.1.3 Landau Length; 3.1.1.4 Collision Path Length; 3.1.1.5 Collision Frequency; 3.1.2 Classification of Plasmas; 3.1.2.1 Low Density Plasmas; 3.1.2.2 Medium Density Plasmas; 3.1.2.3 High Density Plasmas; 3.1.3 Equilibrium and Nonequilibrium Plasmas; 3.1.4 Maxwellian Distribution of Plasma Energies; 3.1.5 Equilibrium Compositions of Plasma Gases (Phase Diagrams); 3.2 Plasma Generation; 3.2.1 Plasma Generation through ; Application of Heat; 3.2.2 Plasma Generation through Compression; 3.2.3 Plasma Generation by Radiation3.2.4 Plasma Generation by Electric Currents (Gas Discharges); 3.2.4.1 Glow Discharges; 3.2.4.2 Arc Discharges; 3.2.4.3 Modeling of the Arc Column; 3.2.4.4 Structure of the Arc Column; 3.3 Design of Plasmatrons; 3.3.1 Arc Discharge Generators and their Applications; 3.3.1.1 Electrode-supported Plasmas; 3.3.1.2 Electrodeless Plasmas; 3.3.1.3 Hybrid Devices; 3.3.2 Stabilization of Plasma Arcs; 3.3.2.1 Wall-stabilized Arcs; 3.3.2.2 Convection-stabilized Arcs; 3.3.2.3 Electrode-stabilized Arcs; 3.3.2.4 Other Stabilization Methods; 3.3.3 Temperature and Velocity Distribution in a Plasma Jet3.3.3.1 Turbulent Jets; 3.3.3.2 Quasi-laminar Jets; 3.4 Plasma Diagnostics: Temperature, Enthalpy, and Velocity Measurements; 3.4.1 Temperature Measurements; 3.4.1.1 Spectroscopic Methods; 3.4.1.2 Two-wavelength Pyrometry; 3.4.2 Velocity Measurements; 3.4.2.1 Enthalpy Probe and Pitot Tube Techniques; 3.4.2.2 Laser Doppler Anemometry (LDA); 3.4.2.3 Other Methods; References; 4 The Second Energy Transfer Process: Plasma-Particle Interactions; 4.1 Injection of Powders; 4.2 Feed Material Characteristics; 4.2.1 Solid Wires, Rods and Filled Wires4.2.2 Powders; 4.2.2.1 Atomization; 4.2.2.2 Fusion and Crushing; 4.2.2.3 Compositing; 4.2.2.4 Agglomeration; 4.3 Momentum Transfer; 4.3.1 Connected Energy Transmission; 4.3.2 Modeling of Momentum Transfer; 4.3.3 Estimation of the Drag Coefficient; 4.3.4 Surface Ablation of Particles; 4.4 Heat Transfer; 4.4.1 Heat Transfer under Low Loading Conditions; 4.4.2 Exact Solution of Heat Transfer Equations; 4.4.2.1 Particle Heating without Evaporation; 4.4.2.2 Particle Heating with Evaporation; 4.4.2.3 Evaporation Time of a Particle; 4.4.3 Heat Transfer under Dense Loading Conditions
• Sommario/riassunto: Over the past two decades, thermal spraying of metallic, ceramic and composite coatings has emerged as a powerful tool for surface engineering, with many new applications and markets continually being developed. This book will help materials scientists and engineers to choose the most appropriate combination of materials, equipment, and operation parameters for the design of high-performance coatings with new functional properties and improved service life.Includes:* a thorough treatment of the fundamental physical processes governing plasma spray technology;* a critica

Hyperspectral image fusion / / Subhasis Chaudhuri, Ketan Kotwal

• Record Nr.: UNINA9910437586003321
• Autore: Chaudhuri Subhasis
• Pubbl/distr/stampa: New York, : Springer, 2013
• ISBN: 1-4614-7470-1
• Edizione: [1st ed. 2013.]
• Descrizione fisica: 1 online resource (xvi, 191 pages) : illustrations (some color)
• Collana: Gale eBooks
• Altri autori (Persone): KotwalKetan
• Disciplina: 004; 006.312; 006.37; 006.6
• Soggetti: Image processing - Digital techniques; Computer vision
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographic references and index.
• Nota di contenuto: Introduction -- Current State of the Art -- Edge-preserving Solution -- Band Selection through Redundancy Elimination -- Bayesian Estimation -- Variational Solution -- Optimization-based Fusion -- Band Selection: Revisited -- Performance Assessment of Fusion Techniques -- Results and Discussions -- Conclusions and Directions for Future Research.
• Sommario/riassunto: Hyperspectral Image Fusion is the first text dedicated to the fusion techniques for such a huge volume of data consisting of a very large number of images. This monograph brings out recent advances in the research in the area of visualization of hyperspectral data. It provides a set of pixel-based fusion techniques, each of which is based on a different framework and has its own advantages and disadvantages. The techniques are presented with complete details so that practitioners can easily implement them. It is also demonstrated how one can select only a few specific bands to speed up the process of fusion by exploiting spatial correlation within successive bands of the hyperspectral data. While the techniques for fusion of hyperspectral images are being developed, it is also important to establish a framework for objective assessment of such techniques. This monograph has a dedicated chapter describing various fusion ; performance measures that are applicable to hyperspectral image fusion. This monograph also presents a notion of consistency of a fusion technique which can be used to verify the suitability and applicability of a technique for fusion of a very large number of images. This book will be a highly useful resource to the students, researchers, academicians and practitioners in the specific area of hyperspectral image fusion, as well as generic image fusion.