Download or read book Fibering of Oxides in a Refractory metal Matrices written by Robert W. Jech and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fibering of Oxides in Refractory metal Matrices written by Robert W. Jech and published by . This book was released on 1967 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fibering of Oxides in Refractory Metals written by R. W. Jech and published by . This book was released on 1967 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the fibering of oxides by hot deformation in metal matrices was carried out using unalloyed columbium or tantalum as the matrix material and thorium oxide, zirconium oxide, magnesium oxide, or aluminum oxide. Composites were prepared by conventional powder metallurgical techniques and extrusion. The composites were examined for microstructures and fiber length-to-diameter ratio and tested in tension at room temperature and 1100, 2200, 2500, 2750, and 3000 F. Stress-rupture tests were conducted on the composites at 2200 and 2500 F for times up to 1000 hr. It was found that the oxides could be plastically deformed into fibers at temperatures well below their melting points when mechanically worked in a ductile matrix. Composites produced in this way exhibited improved tensile strengths and ratios of tensile strength to density as well as improved stress-rupture strength when compared to additive-free matrix materials and compared favorably with some commercial alloys.
Download or read book Fiber reinforced Metal matrix Composites 1967 written by K. R. Hanby and published by . This book was released on 1968 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report is intended to update DMIC Report 241, which describes research on fiber-reinforced metal-matrix composites for the period 1964-1966. A two page summary outlines the current state-of-the-art of these composites, and is followed by a discussion of 1967 research on the composites, arranged according to matrix- and fiber-materials. The bulk of the report consists of summaries of 1967 research programs, arranged by programs. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Matrix Composites written by C.T. Lynch and published by CRC Press. This book was released on 2018-01-18 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of reinforcing a material by the use of a fiber is not a new one. The Egyptian brick layer employed the same principle more than three thousand years ago when straw was incorporated into the bricks. More recent examples of fiber reinforced composites are steel-reinforced concrete, nylon and rayon cord reinforced tires, and fiberglass reinforced plastics. In the last several years considerable progress has been made on new composite structures particularly utilizing boron (on tungsten substrate) fibers in various matrices. Many of these advances have been reviewed recently by P. M. Sinclair1 and by Alexander, Shaver, and Withers.2 An excellent earlier survey is available by Rauch Sutton, and McCreight.3 Boron-reinforced epoxy composites are being fabricated and tested as jet engine components, fuselage components, and even as a complete aircraft wing because of the tremendous gain in experimentally demonstrated properties such as modulus, strength, and fatigue resistance, particularly on a weight normalized (e.g., strength/density) basis. Other than glass/epoxy and boron/ epoxy composites and perhaps boron/aluminum, the systems now under study are in the early stages of research and development. These include other boron/metal composites, graphite/polymer, graphite/metal, graphite/graphite, alumina/metal, and aligned eutectic (directionally, solidified) combinations. As Sinclair points out, designers are wary about filamentary composites becausethere is little background information and scant experience.
Download or read book Characterization of Carbon Nanotube Based Composites under Consideration of Defects written by Moones Rahmandoust and published by Springer. This book was released on 2015-10-14 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the characterization methods involved with carbon nanotubes and carbon nanotube-based composites, with a more detailed look at computational mechanics approaches, namely the finite element method. Special emphasis is placed on studies that consider the extent to which imperfections in the structure of the nanomaterials affect their mechanical properties. These defects may include random distribution of fibers in the composite structure, as well as atom vacancies, perturbation and doping in the structure of individual carbon nanotubes.
Download or read book Oxide Based Fiber Reinforced Ceramic Matrix Composites written by Bilge Saruhan and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of Oxide-Based Fiber-Reinforced Ceramic-Matrix Composites is to provide comprehensive information on the most recent successful findings. The book consists of six chapters which characterize the current state of the art concerning oxide-based fiber-reinforced composites. Chapter one provides an introduction, examples of application areas and background information. Chapter two deals with the primary material properties for the areas of application and lists the possible constituent parts of the composites, depending on particular demands. Chapter three explains both the past and present fabrication methods which can affect the performance of the composites. Chapter four defines the interphase-related phenomena and describes the mechanical characteristics of the oxide-based fiber-reinforced composite, produced with different interphases. Chapter five deals with the fabrication route, functionality and mechanical characterization of the porous-matrix composites. The last chapter summarizes the present achievements and identifies requirements for reaching the goal, thereby providing a promising course for future research.
Download or read book Oxide Deformation and Fiber Reinforcement in a Tungsten Metal oxide Composite written by Charles P. Blankenship and published by . This book was released on 1968 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Refractory oxide particles of urania (UO2) and zirconia (ZrO2) were added to a tungsten matrix and elongated into fibers by hot extrusion. Extrusion temperatures ranged from 3200 degrees to 4000 degrees F (1760 degrees to 2200 degrees C). The geometry of the oxide fibers appeared to be closest to that of an ellipsoid with the major axis alined in the extrusion direction. Oxide fibering was measured by an average length-to-width ratio of the fibers sectioned parallel to the major axis. the extent of oxide deformation was estimated in terms of strain components. Oxide-matrix deformation characteristics were related to the extrusion parameters by comparing the estimated oxide strain components to those of the composite. In terms of fibering, the greatest oxide elongation average length to width ratio = 200, was obtained in tungsten-UO2 composites extruded at 3600 degrees F (1980 degrees C) with a composite reduction of 18 to 1. values of average length to width ratio for tungsten-UO2 composites extruded at 3200 degrees and 4000 degrees F (1760 and 2200 degrees C) were nearly equal (average length to width ration =100) even though the composite reductions were 12 to 1 and 18 to 1, respectively. For a tungsten-ZrO2 composite extruded at 4000 degrees F (2200 degrees C), average length to width ratio =160. These length-to-width ratio values have no direct relation to the length-to-diameter ratio commonly used to describe fibered composites containing cylindrical fibers.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1970 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fiber reinforced Metal matrix Composites 1969 1970 written by Kenneth Roger Hanby and published by . This book was released on 1971 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Composite and Nanocomposite Materials written by Tri-Dung Ngo and published by BoD – Books on Demand. This book was released on 2020-07-15 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the modern materials, the composites have a few decades of history. However, there has been a tremendous advancement of this class of material in science and technology. During recent decades, composite materials have steadily gained ground in nearly all sectors. The composite materials have been used in various industrial applications such as buildings and constructions, aerospace, automotive and sports equipment, consumer products etc. Nanotechnology is rapidly evolving, and science, engineering, and technology have merged to bring nanoscale materials that much closer to reality. It is one of the fastest growing areas for research. Nanocomposite materials are helping improve products that we use every day and creating new, exciting products for the future. Composites and nanocomposites composed of reinforcements, nano-reinforcements, and matrices are well-known engineering materials. Keeping in mind the advantages of composite and nanocomposite materials, this book covers fundamental effects, product development, properties, and applications of the materials including material chemistry, designing, and manufacturing. The book also summarizes the recent developments made in the area of advanced composite and nanocomposite materials. A number of critical issues and suggestions for future work are discussed, underscoring the roles of researchers for the efficient development of composites and nanocomposites through value additions to enhance their use.
Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1968 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Selected Listing of NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1968 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
- Author : John B. Wachtman
- Publisher : John Wiley & Sons
- Release : 2009-09-28
- ISBN : 0470316225
- Pages : 539 pages
17th Annual Conference on Composites and Advanced Ceramic Materials Part 2 of 2 Volume 14 Issue 9 10
Download or read book 17th Annual Conference on Composites and Advanced Ceramic Materials Part 2 of 2 Volume 14 Issue 9 10 written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Download or read book Fiber strengthened Metallic Composites written by and published by . This book was released on 1967 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: