1,886 research outputs found

    Apparatus for testing polymeric materials Patent

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    Apparatus for determining volatile condensable material present in polymeric product

    Micro-scale crease-and-fold apparatus

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    Crease and fold resistance of polymeric films and test equipment for determining mechanical properties is discussed. Components of equipment and method of operation are described. Illustration of test device is provided

    Materials data handbooks on aluminum alloys

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    Five handbooks have been prepared which describe up-to-date properties of the following wrought-aluminum alloys: 2014, 2219, 5456, 6061, and 7075. Each handbook is divided into twelve chapters. Scope of information presented includes physical- and mechanical-property data at cryogenic, ambient, and elevated temperatures

    Evaluation of polymeric products for use in thermal-vacuum environment

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    Of 350 materials screened for outgassing characteristics, 100 qualify within the limits of less than 1 percent weight loss and less than 0.1 percent VCM /volatile condensible material/ content. Infrared absorbence spectra of the VCM from 96 polymeric products and an interim list of recommended products are identified

    Materials data handbook on titanium 6Al-4V

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    Handbook has been prepared which describes latest property information on titanium 6Al-4V. Scope of information presented includes physical- and mechanical-property data at cryogenic, ambient, and elevated temperatures, supplemented with useful information in such areas as material procurement,metallurgy of alloy, corrosion, environmental effects, fabrication, and joining technology

    Materials data handbook on Inconel Alloy 718

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    Handbook is divided into twelve chapters. Scope of information presented includes physical- and mechanical-property data at cryogenic, ambient, and elevated temperatures. This is supplemented with useful information in such areas as material procurement, metallurgy of alloy, corrosion, environmental effect, fabrication, and joining techniques. Design data are presented, as available

    Application of local linearization and the transonic equivalence rule to the flow about slender analytic bodies at Mach numbers near 1.0

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    The local linearization method for axisymmetric flow is combined with the transonic equivalence rule to calculate pressure distribution on slender bodies at free-stream Mach numbers from .8 to 1.2. This is an approximate solution to the transonic flow problem which yields results applicable during the preliminary design stages of a configuration development. The method can be used to determine the aerodynamic loads on parabolic arc bodies having either circular or elliptical cross sections. It is particularly useful in predicting pressure distributions and normal force distributions along the body at small angles of attack. The equations discussed may be extended to include wing-body combinations

    Polymers for spacecraft hardware. Materials specifications and engineering information Monthly technical progress report no. 15, Aug. 10 - Sep. 9, 1965

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    Weight analysis - silicone polymer sample preparation method to provide optimum vacuum- weight-loss value

    Development of specifications for polymeric materials Monthly technical progress report no. 14, Jul. 10 - Aug. 9, 1965

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    Weight analysis - trial run of specification test procedures using silicone elastomer in vacuum weight loss uni

    Materials data handbook: Aluminum alloy 5456

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    A summary of the materials property information for aluminum alloy 5456 is presented. The scope of the information includes physical and mechanical property data at cryogenic, ambient, and elevated temperatures. Information on material procurement, metallurgy of the alloy, corrosion, environmental effects, fabrication, and joining techniques is developed
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