Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Thermal Conductivity And Thermal Expansion Of Graphite Fiber Copper Matrix Composites
Download Thermal Conductivity And Thermal Expansion Of Graphite Fiber Copper Matrix Composites full books in PDF, epub, and Kindle. Read online Thermal Conductivity And Thermal Expansion Of Graphite Fiber Copper Matrix Composites ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Thermal Conductivity and Thermal Expansion of Graphite Fiber/copper Matrix Composites by :
Download or read book Thermal Conductivity and Thermal Expansion of Graphite Fiber/copper Matrix Composites written by and published by . This book was released on 1994 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high specific conductivity of graphite fiber/copper matrix (Gr/Cu) composites offers great potential for high heat flux structures operating at elevated temperatures. To determine the feasibility of applying Gr/Cu composites to high heat flux structures, composite plates were fabricated using unidirectional and cross-plied pitch-based P100 graphite fibers in a pure copper matrix. Thermal conductivity of the composites was measured from room temperature to 1073 K, and thermal expansion was measured from room temperature to 1050 K. The longitudinal thermal conductivity, parallel to the fiber direction, was comparable to pure copper. The transverse thermal conductivity, normal to the fiber direction, was less than that of pure copper and decreased with increasing fiber content. The longitudinal thermal expansion decreased with increasing fiber content. The transverse thermal expansion was greater than pure copper and nearly independent of fiber content.
Book Synopsis Properties of Graphite Fiber Reinforced Copper Matrix Composites for Space Power Applications by : David L. Ellis
Download or read book Properties of Graphite Fiber Reinforced Copper Matrix Composites for Space Power Applications written by David L. Ellis and published by . This book was released on 1992 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interfacial Effects on the Thermal and Mechanical Properties of Graphite/copper Composites by : Sandra Marie DeVincent
Download or read book Interfacial Effects on the Thermal and Mechanical Properties of Graphite/copper Composites written by Sandra Marie DeVincent and published by . This book was released on 1995 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Processing and Fabrication of Advanced Materials by : Alan Kin Tak Lau
Download or read book Processing and Fabrication of Advanced Materials written by Alan Kin Tak Lau and published by Trans Tech Publications Ltd. This book was released on 2011-11-29 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 20th International Symposium on the Processing and Fabrication of Advanced Materials (PFAMXX) was organized by Hong Kong Polytechnic University, during the 15-17th December 2011, in Hong Kong. The main purpose of this interdisciplinary symposium was to bring together state-of-the-art developments regarding all aspects of the processing and fabrication of advanced materials, spanning the entire gamut of metallic, intermetallic, ceramic, ceramic-matrix composites, metal-matrix composites, intermetallic-matrix composites, advanced polymers and polymer-matrix composites; together with surface and high-temperature coatings. The symposium provided an attractive forum for the presentation of the latest advances, in materials processing and fabrication, by researchers and engineers from industry, research laboratories and academia. The proceedings cover the areas of: Advanced Composite Materials (Polymer, Metal and Ceramics); Natural Fibres (Plant- or Animal-Based) Composites; Nanostructural Materials; Properties of Materials; Failure Analysis; Computational Analysis and Simulations; Advanced Manufacturing Processes; Bio-materials and Bio-composites; Materials Characterizations. The result is an excellent and timely overview of the subject.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723208591 Total Pages :144 pages Book Rating :4.2/5 (85 download)
Book Synopsis Micromechanical Modeling of the Thermal Expansion of Graphite/Copper Composites with Nonuniform Microstructure by : National Aeronautics and Space Administration (NASA)
Download or read book Micromechanical Modeling of the Thermal Expansion of Graphite/Copper Composites with Nonuniform Microstructure written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-18 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two micromechanical models were developed to investigate the thermal expansion of graphite/copper (Gr/Cu) composites. The models incorporate the effects of temperature-dependent material properties, matrix inelasticity, initial residual stresses due to processing history, and nonuniform fiber distribution. The first model is based on the multiple concentric cylinder geometry, with each cylinder treated as a two-phase composite with a characteristic fiber volume fractions. By altering the fiber volume fraction of the individual cylinders, unidirectional composites with radially nonuniform fiber distributions can be investigated using this model. The second model is based on the inelastic lamination theory. By varying the fiber content in the individual laminae, composites with nonuniform fiber distribution in the thickness direction can be investigated. In both models, the properties of the individual regions (cylinders or laminae) are calculated using the method of cells micromechanical model. Classical incremental plasticity theory is used to model the inelastic response of the copper matrix at the microlevel. The models were used to characterize the effects of nonuniform fiber distribution on the thermal expansion of Gr/Cu. These effects were compared to the effects of matrix plasticity, choice of stress-free temperature, and slight fiber misalignment. It was found that the radially nonuniform fiber distribution has little effect on the thermal expansion of Gr/Cu but could become significant for composites with large fiber-matrix transverse CTE and Young's modulus mismatch. The effect of nonuniform fiber distribution in the through-thickness direction of a laminate was more significant, but only approached that of the stress-free temperature for the most extreme cases that include large amounts of bending. Subsequent comparison with experimental thermal expansion data indicated the need for more accurate characterization of the graphite fiber thermomechanical prop...
Book Synopsis Impact of Thermal Conductivity on Energy Technologies by : Aamir Shahzad
Download or read book Impact of Thermal Conductivity on Energy Technologies written by Aamir Shahzad and published by BoD – Books on Demand. This book was released on 2018-09-05 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to provide a deep understanding on the advanced treatments of thermal properties of materials through experimental, theoretical, and computational techniques. This area of interest is being taught in most universities and institutions at the graduate and postgraduate levels. Moreover, the increasing modern technical and social interest in energy has made the study of thermal properties more significant and exciting in the recent years. This book shares with the international community a sense of global motivation and collaboration on the subject of thermal conductivity and its wide spread applications in modern technologies. This book presents new results from leading laboratories and researchers on topics including materials, thermal insulation, modeling, steady and transient measurements, and thermal expansion. The materials of interest range from nanometers to meters, bringing together ideas and results from across the research field.
Book Synopsis Carbon Materials for Advanced Technologies by : T.D. Burchell
Download or read book Carbon Materials for Advanced Technologies written by T.D. Burchell and published by . This book was released on 1999-07-22 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study begins with a review of carbon materials, emphasizing structure and chemical bonding in various forms of carbon. It then goes on to discuss advanced technologies for the manufacture and modification of carbon-based materials and their practical applications.
Book Synopsis Effect of Interfacial Bonding Strength on Thermal Expansion Behavior of Carbon-Fiber-Reinforced Copper-Matrix Composites by : YL. Wang
Download or read book Effect of Interfacial Bonding Strength on Thermal Expansion Behavior of Carbon-Fiber-Reinforced Copper-Matrix Composites written by YL. Wang and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alloying elements were added to the copper matrix to produce unidirectional carbon-fiber-reinforced copper-matrix composites with different interfacial bonding strengths (IBS). The thermal expansion coefficients of these composites were determined to investigate the influence of the IBS on the thermal expansion behavior at a low temperature range. The results showed that the thermal expansion coefficient (CTE) at low temperatures (elastic region) of the composites was controlled by the IBS. Furthermore, the IBS of the composites was observed to control the thermal stresses in the matrix and, therefore, to affect the temperature of the onset of matrix yielding. However, the relationship between IBS and expansion behavior at a high temperature range (beyond elastic region) for the present carbon-fiber copper composite system cannot be determined because of the influence of matrix strength. Further work is underway to develop a model so as to correlate the IBS with the CTE of the composites under elastic stage, and a suitable composite system is needed to correlate the IBS to the CTE at high temperatures.
Book Synopsis Metal Matrix Composites by : Minoru Taya
Download or read book Metal Matrix Composites written by Minoru Taya and published by Elsevier. This book was released on 2016-01-11 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Matrix Composites: Thermomechanical Behavior discusses metal matrix composites, elaborating on that consists of two phases—fiber as reinforcement and metal as matrix. This book focuses on polymer matrix composites, including topics in metal matrix composites ranging from processing to fracture mechanics. The three basic types of composite materials—dispersion-strengthened, particle-reinforced, and fiber (whisker)-reinforced, are also described in detail. Dispersion-strengthened is characterized by a microstructure consisting of an elemental matrix within which fine particles are uniformly dispersed, while particle-reinforced is indicated by dispersed particles of greater than 1.0 μm diameter with a volume fraction of 5 to 40%. Fiber (whisker)-reinforced provides a distinguishing microstructural feature of fiber-reinforced materials, such as that the reinforcing fiber has one long dimension, while the reinforcing particles of the other two types do not. This publication serves as a reference data book to students and researchers aiming to acquire knowledge of the thermomechanical behavior of metal matrix composites.
Book Synopsis Copper Graphite Composite Materials by : André Boden
Download or read book Copper Graphite Composite Materials written by André Boden and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Stress Analysis of Fiber-reinforced Composite Materials by : M. W. Hyer
Download or read book Stress Analysis of Fiber-reinforced Composite Materials written by M. W. Hyer and published by DEStech Publications, Inc. This book was released on 2009 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated and improved, Stress Analysis of Fiber-Reinforced Composite Materials, Hyer's work remains the definitive introduction to the use of mechanics to understand stresses in composites caused by deformations, loading, and temperature changes. In contrast to a materials science approach, Hyer emphasizes the micromechanics of stress and deformation for composite material analysis. The book provides invaluable analytic tools for students and engineers seeking to understand composite properties and failure limits. A key feature is a series of analytic problems continuing throughout the text, starting from relatively simple problems, which are built up step-by-step with accompanying calculations. The problem series uses the same material properties, so the impact of the elastic and thermal expansion properties for a single-layer of FR material on the stress, strains, elastic properties, thermal expansion and failure stress of cross-ply and angle-ply symmetric and unsymmetric laminates can be evaluated. The book shows how thermally induced stresses and strains due to curing, add to or subtract from those due to applied loads.Another important element, and one unique to this book, is an emphasis on the difference between specifying the applied loads, i.e., force and moment results, often the case in practice, versus specifying strains and curvatures and determining the subsequent stresses and force and moment results. This represents a fundamental distinction in solid mechanics.
Book Synopsis Copper Matrix Composites Fabricated Via Field Assisted Sintering Technology for Thermal Management Applications by : Aaron Rape
Download or read book Copper Matrix Composites Fabricated Via Field Assisted Sintering Technology for Thermal Management Applications written by Aaron Rape and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides significant evidence to support the hypothesis that Field Assisted Sintering Technology (FAST) can be used as an effective method to develop high performance thermal management materials. The work presented in the theis can be divided into two parts:1) The fabrication of composite material systems 2) The characterization of the composite material systems that have been developed. The material development portion of the thesis focuses on developing copper based composite materials with the objective of improving a specific thermal property or properties. Copper-tungsten composites were developed to produce composite materials with relatively high thermal conductivity and low coefficient of thermal expansion (CTE). FAST proved to be effective in producing materials that had very high density. Copper based material systems were combined with diamond particles were then developed to reduce CTE while improving thermal conductivity compared to the best known commonly used pure metal, copper. It was discovered that a pure copper matrix was not effective to develop quality composite systems due to the poor interface that existed between the matrix and diamond particle. Several approaches were taken to improve the interface. Incorporating low melting temperature materials that would become an in-situ liquid phase showed some effectiveness in improving the interface and thermal conductivity. Unfortunately, the thermal conductivity was not able to be improved due to the lack of chemical reaction between the diamond particles and the matrix. Copper alloys containing zirconium were found to be the best solution to improving the interface. Zr migrated to the interface from the matrix during the sintering process and formed a very thin layer of carbide. Finite element analysis (FEA) was employed to provide further insight into the composite materials. The analysis revals that the thermal conductivity of the alloy matrix changes as a result of the Zr migration from the matrix to the interface. The copper alloy approach was extended to include carbon nanotubes instead of diamond particles. While the Zr migration and carbide formation was also observed, the composites did not show good thermal properties because of agglomerations of the carbon nanotubes. The result was a composite material that had low density due to porosity within the pockets of nanotubes. The porosity was also severely detrimental to the thermal conductivity of the composites.\\ Composite materials made from a combination of pure metals and thermally annealed pyrolytic graphite (TPG) were fabricated as heat spreading materials. The results were characterized using a customized apparatus designed specifically to measure the thermal spreading cabability of a material. The materials containing TPG showed a more uniform heat distribution and lower maximum temperature than their pure metal counterparts. Thermal modelling was carried out via FEA to determine the thermal interface resistance of the composite.
Book Synopsis Polymer Matrix Composites and Technology by : Ru-Min Wang
Download or read book Polymer Matrix Composites and Technology written by Ru-Min Wang and published by Elsevier. This book was released on 2011-07-14 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given such properties as low density and high strength, polymer matrix composites have become a widely used material in the aerospace and other industries. Polymer matrix composites and technology provides a helpful overview of these materials, their processing and performance.After an introductory chapter, part one reviews the main reinforcement and matrix materials used as well as the nature of the interface between them. Part two discusses forming and molding technologies for polymer matrix composites. The final part of the book covers key aspects of performance, including tensile, compression, shear and bending properties as well as impact, fatigue and creep behaviour.Polymer matrix composites and technology provides both students and those in industry with a valuable introduction to and overview of this important class of materials. Provides a helpful overview of these materials, their processing and performance incorporating naming and classification of composite materials Reviews the main reinforcement and matrix materials used as well as the nature of the interface between them including damage mechanisms Discusses forming and molding technologies for polymer matrix composites outlining various techniques and technologies
Download or read book NASA Tech Briefs written by and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fabrication and Characterization of High Thermal Conductivity Metal Matrix Composites Using Graphite Fibers by : Sravanthi Mallim
Download or read book Fabrication and Characterization of High Thermal Conductivity Metal Matrix Composites Using Graphite Fibers written by Sravanthi Mallim and published by . This book was released on 2005 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
