| タイトル | Transverse Coefficient of Thermal Expansion Measurements of Carbon Fibers Using ESEM at High Temperatures |
| 著者（英） | Ochoa, O.; Jiang, J.; Ellis, A.; Effinger, Michael; Lo, Z.; Putnam, D. |
| 著者所属（英） | Texas A&M Univ. |
| 発行日 | 2003-01-01 |
| 言語 | eng |
| 内容記述 | The transverse coefficient of thermal expansion (CTE) of single IM7, T1000, and P55 carbon fibers are measured at elevated temperatures. The specimens are prepared by press-fitting fiber tows into 0.7mm-diameter cavity in a graphite disk of 5mm in diameter and 3mm high. The specimens are placed on a crucible in an ESEM, and images of the fiber cross section are taken as the fibers are heated up to 800 C. Holding time, heating and cool down cycles are also introduced. The geometrical changes are measured using a graphics tablet. The change in area/perimeter is calculated to determine the strain and transverse CTE for each fiber. In a complimentary computational effort, displacements and stresses are calculated with finite element models. |
| NASA分類 | Nonmetallic Materials |
| 権利 | No Copyright |
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