Since composite laminates are beginning to be identified for use in reusable launch vehicle propulsion systems, an understanding of their permeance is needed. A foreign object impact event can cause a localized area of permeability (leakage) in a polymer matrix composite, and it is the aim of this study to assess a method of quantifying permeability-after-impact results. A simple test apparatus is presented, and variables that could affect the measured values of permeability-after-impact were assessed. Once it was determined that valid numbers were being measured, a fiber/resin system was impacted at various impact levels and the resulting permeability measured, first with a leak check solution (qualitative) then using the new apparatus (quantitative). The results showed that as the impact level increased, so did the measured leakage. As the pressure to the specimen was increased, the leak rate was seen to increase in a nonlinear fashion for almost all the specimens tested.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Permeability Testing of Impacted Composite Laminates for Use on Reusable Launch Vehicles


    Contributors:

    Publication date :

    2001


    Size :

    26 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Reusable launch vehicles

    Osmun, W.G. | Engineering Index Backfile | 1964


    Reusable launch vehicles

    DrDr Ruppe, H.O. | Elsevier | 1985



    Reusable Launch Vehicles Outlook

    Online Contents | 2002


    Reusable Launch Vehicles Outlook

    Online Contents | 2009