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  • Other Sources  (3)
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  • 1
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    Fluoroether modified epoxy composites (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Addition of controlled amounts of perfluorinated alkyl ether diacyl fluoride to epoxy resin systems prior to cure results in a formulation which, exhibits improved energy absorbing properties.
    Keywords: COMPOSITE MATERIALS
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Epoxy/Fluoroether Composites (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Composite materials made from unfilled and glass-fiber-reinforced epoxy toughened by copolymerization with elastomeric prepolymers of perfluoroalkyl ether diacyl fluoride (EDAF). Improved properties due to hydrogen bonding between rubber phase and epoxy matrix, plus formation of rubberlike phase domains that molecularly interpenetrate with epoxy matrix. With optimum rubber content, particle size, and particle shape, entire molecular structure reinforced and toughened. Improved composites also show increased failure strength, stiffness, glass-transition temperature, and resistance to water.
    Keywords: MATERIALS
    Type: ARC-11418 , NASA Tech Briefs (ISSN 0145-319X); 9; 3; P. 86
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A data based random number generator for a multivariate distribution (using stochastic interpolation) (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Let X be a K-dimensional random variable serving as input for a system with output Y (not necessarily of dimension k). given X, an outcome Y or a distribution of outcomes G(Y/X) may be obtained either explicitly or implicity. The situation is considered in which there is a real world data set X sub j sub = 1 (n) and a means of simulating an outcome Y. A method for empirical random number generation based on the sample of observations of the random variable X without estimating the underlying density is discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Texas A and M Univ. Proc. of the NASA Workshop on Density Estimation and Function Smoothing; p 214-225
    Format: text
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    NASA TECHNICAL REPORTS
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