| タイトル | Strain rate characterization of unidirectional graphite/epoxy composite |
| 著者（英） | Labedz, R. H.; Hamilton, W. G.; Daniel, I. M. |
| 著者所属（英） | Broutman and Associates|IIT Research Inst.|Illinois Inst. of Tech. |
| 発行日 | 1982-01-01 |
| 言語 | eng |
| 内容記述 | For an investigation of problems of composites at high strain rates with dominant wave propagation effects, such as dynamically loaded composite jet engine blades, the longitudinal, transverse, and in-plane shear properties of unidirectional SP 288/AS graphite/epoxy were measured at various strain rates ranging from quasi-static to over 500/s. The test specimens were rings 10.16 cm in diameter, 2.54 cm long, 6 to 8 plies thick, and with fibers at 0, 90, and 10 deg off-axis. Quasi-static testing was conducted in a fixture which applies hydraulic pressure to the ring specimens, and dynamic testing was conducted by applying an internal pressure pulse through a liquid in a special fixture. Dynamic stress-strain curves are presented. For the 0-deg specimens, the modulus increases with strain up to 20 percent of the static value. The modulus and strength increase sharply in the 90-deg rings with strain rate reaching values two to three times the corresponding static rate. |
| NASA分類 | COMPOSITE MATERIALS |
| レポートNO | 84A27354 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/398937 |
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