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  • 1
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    High Temperature Metal and Ceramic Composites (1985)
    Springer
    Details
    Publication Date: 1985-06-01
    Print ISSN: 1047-4838
    Electronic ISSN: 1543-1851
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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    PAPER CURRENT
  • 2
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    Materials and structures technology (1979)
    In:  CASI
    Details
    Publication Date: 2006-07-16
    Description: Materials and structures performance limitations, particularly for the hot section of the engine in which these limitations limit the life of components, are considered. Failure modes for components such as blades, vanes, and combustors and how they are affected by the environment for such components are discussed. Methods used to improve the materials used for such components are: (1) application of directional structures to turbine components for high strength at high temperatures; (2) improved coatings to increase oxidation and corrosion resistance; (3) increase strength and stiffness with reduced weight by applying higher specific properties of composite materials; and (4) cost effective processing such as near net shape powder methods applied to disks. Life prediction techniques developed to predict component life accurately in advance of service and progress in improving the intermediate and cold section components of turbine engines are covered.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: Aeropropulsion 1979; p 149-186
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Wire-reinforced superalloys (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The problems and progress encountered in developing refractory-wire-reinforced superalloys for turbojet-engine applications at operating temperature within 1000-1200 C are reviewed. Particular attention is given to the problem of the compatibility of the fiber-reinforcement wire and the superalloy matrix and to the means of improving composite properties. Fiber development is described, since fibers with better properties would result in better composite properties. Matrix composition is discussed in terms of its functions, namely to enhance compatibility and provide strength, oxidation protection, and ductility. Advantages and shortcomings of different fabrication techniques are revealed, and the current state of development of wire-reinforced composites is outlined by indicating the properties achieved. Requirements for further development of the material and for application to engineering components are set forth.
    Keywords: METALLIC MATERIALS
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    High temperature metal and ceramic composites (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The Materials Division at NASA Lewis is engaged in research and development efforts on behalf of fiber-reinforced composite materials that are lighter, stiffer, and more structurally reliable than conventional monolithic alloys and ceramics in applications that range from the cryogenic to the refractory. Attention is presently given to metal matrix composites, in which high performance depends on stiff, strong and thermally stable large diameter fibers, with chemically stable interfacial bonding and good coefficient of thermal expansion matching between fibers and matrices, and to ceramic matrix composites, in which intermediate strength interfacial bonds must allow cracks to propagate through the matrix only, while retaining good load transfer characteristics between fiber and matrix.
    Keywords: COMPOSITE MATERIALS
    Type: Journal of Metals (ISSN 0148-6608); 37; 41
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Stress-rupture properties of tungsten wire from 1200 to 2500 deg F. (1966)
    In:  Other Sources
    Details
    Publication Date: 2011-08-11
    Description: Stress rupture properties of tungsten wire at high temperatures, noting effect of primary recrystallization on microhardness, ductility and grain size
    Keywords: MATERIALS, METALLIC
    Type: /AMERICAN SOCIETY FOR METALS
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Material and structural studies of metal and polymer matrix composites (1973)
    In:  CASI
    Details
    Publication Date: 2012-05-23
    Description: Fiber-reinforced composites and design analysis methods for these materials are being developed because of the vast potential of composites for decreasing weight and/or increasing use temperature capability in aerospace systems. These composites have potential for use in airbreathing engine components as well as aeronautical and space vehicle structures. Refractory wire-superalloy composites for use up to 2200 F or more and metal-matrix composites for lower temperature applications such as aerospace structures and turbojet fan and compressor blades are under investigation and are discussed. The development of a number of resin systems, including the polyimides and polyphenylquinoxalines, is described and their potential for use at temperatures approaching 315 C (600 F) is indicated. Various molecular modifications that improve processability and/or increase thermal and oxidative resistance of the resins are also described. Structural analysis methods are discussed for determining the stresses and deformations in complex composite systems. Consideration is also given to residual stresses resulting from the curing process and to the foreign object damage problem in fan blade applications.
    Keywords: MATERIALS, NONMETALLIC
    Type: AGARD Impact of Composite Mater. on Aerospace Vehicles and Propulsion Systems; 16 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Advanced materials research for long-haul aircraft turbine engines (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The status of research efforts to apply low to intermediate temperature composite materials and advanced high temperature materials to engine components is reviewed. Emerging materials technologies and their potential benefits to aircraft gas turbines were emphasized. The problems were identified, and the general state of the technology for near term use was assessed.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA. Langley Res. Center CTOL Transport Technol., 1978; p 187-204
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Composite materials research in support of supersonic propulsion systems (1976)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Two engine components, fan blades and exhaust systems, were selected for composite materials development efforts in support of the supersonic cruise aircraft research (SCAR) engine program. The materials selected were boron/aluminum for fan blades and silicon carbide/superalloy sheet for the exhaust system. The current status of the research into applying these two composite materials to SCAR engines is reviewed.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: Proc. of the SCAR Conf., Part 1; p 457-468
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    The effect of interfiber distance and temperature on the critical aspect ratio in composites. (1967)
    In:  Other Sources
    Details
    Publication Date: 2018-12-01
    Description: Interfiber distance and temperature effects on critical aspect ratio in fiber composites obtained from modified pull-out test
    Keywords: MATERIALS, METALLIC
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Refractory metal fiber nickel alloy composites for use at high temperatures. (1967)
    In:  Other Sources
    Details
    Publication Date: 2018-12-01
    Description: Stress-rupture properties of composites containing refractory metal fibers and nickel alloys evaluated at high temperatures
    Keywords: MATERIALS, METALLIC
    Format: text
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    NASA TECHNICAL REPORTS
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