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Space radiation effects on graphite-epoxy composite materials
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Herakovich, C. T. Sykes Jr., G. F. Milkovich, S. M. |
| Copyright Year | 1984 |
| Description | Radiation effects on engineering properties, dimensional stability, and chemistry on state of the art composite systems were characterized. T300/934 graphite-epoxy composite was subjected to 1.0 MeV electron radiation for a total dose of 1.0 x 10(10) rads at a rate of 5.0 x 10(7) rads/hour. This simulates a worst case exposure equivalent to 30 years in space. Mechanical testing was performed on he 4-ply unidirectional laminates over the temperature range of -250 F (116K) to +250 F (394K). A complete set of in-plane tensile elastic and strength properties were obtained (E sub 1, E sub 2, nu sub 12, G sub 12, X sub T, Y sub T, and S). In addition electron microscopy was used to study and analyze the fracture surfaces of all specimens tested. Results indicate that little difference in properties is noted at room temperature, but significant differences are observed at both low and elevated temperatures. |
| File Size | 9989513 |
| Page Count | 176 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840017701 |
| Archival Resource Key | ark:/13960/t9f52hd2b |
| Language | English |
| Publisher Date | 1984-06-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Thermodynamics Transition Temperature Fracture Mechanics Mechanical Properties Crosslinking Graphite-epoxy Composites Electron Radiation Brittleness Electron Microscopy Tensile Properties Molecular Weight 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 |
