| タイトル | Long-Term Isothermal Aging Effects on Carbon Fabric-Reinforced PMR-15 Composites: Compression Strength |
| 本文（外部サイト） | http://hdl.handle.net/2060/19960017555 |
| 著者（英） | Roberts, Gary D.; Bowles, Kenneth J.; Kamvouris, John E. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1996-03-01 |
| 言語 | eng |
| 内容記述 | A study was conducted to determine the effects of long-term isothermal thermo-oxidative aging on the compressive properties of T-650-35 fabric reinforced PMR-15 composites. The temperatures that were studied were 204, 260, 288, 316, and 343 C. Specimens of different geometries were evaluated. Cut edge-to-surface ratios of 0.03 to 0.89 were fabricated and aged. Aging times extended to a period in excess of 15,000 hours for the lower temperature runs. The unaged and aged specimens were tested in compression in accordance with ASTM D-695. Both thin and thick (plasma) specimens were tested. Three specimens were tested at each time/temperature/geometry condition. The failure modes appeared to be initiated by fiber kinking with longitudinal, interlaminar splitting. In general, it appears that the thermo-oxidative degradation of the compression strength of the composite material may occur by both thermal (time-dependent) and oxidative (weight-loss) mechanisms. Both mechanisms appear to be specimen-thickness dependent. |
| NASA分類 | Composite Materials |
| レポートNO | 96N23136
NASA-TM-107129
E-9947
NAS 1.15:107129 |
| 権利 | No Copyright |
|
