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Permeability testing of impacted composite laminates for use on reusable launch vehicles
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nettles, A. T. |
| Copyright Year | 2001 |
| Description | 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. |
| File Size | 966587 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010020948 |
| Archival Resource Key | ark:/13960/t23c10h7j |
| Language | English |
| Publisher Date | 2001-02-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Leakage Microcracks Propulsion System Performance Permeability Impact Tests Laminates Reusable Launch Vehicles Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
