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    Optimization of the material selection process for cryogenic composite overwrapped pressure vessels

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    etd-03272008-163646.pdf (1.058 Mb )
    Date
    2008-03-27
    Author
    Dyess, Mark Vernon
    Item Type
    Thesis
    Committee
    Vizzini, J. Anthony
    Schneider, Judy
    Sullivan, W. Rani
    Metrics
    
    Abstract
    The objective of this research was to develop a test methodology for the evaluation of materials for possible use in cryogenic composite overwrapped pressure vessels (COPVs). This paper investigates various micromechanical and macromechanical techniques to test the interaction between fibers and resins. Uniaxial tension testing was performed at ambient and cryogenic temperatures on neat resin samples, straight-sided composite specimens, and NOL ring specimens. COPVs were constructed and burst tested to provide a performance comparison. Results show resins suitable for use at cryogenic conditions display a LN2 temperature elongation to failure greater than 2% and an ambient temperature elastic modulus less than 35 MPa. NOL rings were determined to be the preferred composite test method rather than straight-sided specimens. Mechanical performance of the NOL rings compares well with actual COPV performance.
    Degree
    Master of Science
    Department
    Department of Mechanical Engineering.
    URI
    https://hdl.handle.net/11668/15036
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    Mississippi State University Libraries
    395 Hardy Rd
    P.O. Box 5408, Mississippi State, MS 39762-5408
    (662) 325-7668
    (662) 325-0011
    (662) 325-8183
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    Mississippi State University Libraries
    395 Hardy Rd
    P.O. Box 5408, Mississippi State, MS 39762-5408
    (662) 325-7668
    (662) 325-0011
    (662) 325-8183
    Contact repository admin Report a problem Terms of use Privacy policy Accessibility MSU Legal