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Monte carlo computational modeling of the energy dependence of atomic oxygen undercutting of protected polymers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stueber, Thomas J. Norris, Mary Jo Banks, Bruce A. |
| Copyright Year | 1998 |
| Description | A Monte Carlo computational model has been developed which simulates atomic oxygen attack of protected polymers at defect sites in the protective coatings. The parameters defining how atomic oxygen interacts with polymers and protective coatings as well as the scattering processes which occur have been optimized to replicate experimental results observed from protected polyimide Kapton on the Long Duration Exposure Facility (LDEF) mission. Computational prediction of atomic oxygen undercutting at defect sites in protective coatings for various arrival energies was investigated. The atomic oxygen undercutting energy dependence predictions enable one to predict mass loss that would occur in low Earth orbit, based on lower energy ground laboratory atomic oxygen beam systems. Results of computational model prediction of undercut cavity size as a function of energy and defect size will be presented to provide insight into expected in-space mass loss of protected polymers with protective coating defects based on lower energy ground laboratory testing. |
| File Size | 575551 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980197294 |
| Archival Resource Key | ark:/13960/t90916m28 |
| Language | English |
| Publisher Date | 1998-05-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Kapton Trademark Ground Tests Low Earth Orbits Oxygen Supply Equipment Laboratory Equipment Monte Carlo Method Long Duration Exposure Facility Protective Coatings Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
