| タイトル | Stiffness reductions during tensile fatigue testing of graphite/epoxy angle-ply laminates |
| 本文（外部サイト） | http://hdl.handle.net/2060/19830009325 |
| 著者（英） | Odom, E. M.; Adams, D. F. |
| 著者所属（英） | Wyoming Univ. |
| 発行日 | 1982-11-01 |
| 言語 | eng |
| 内容記述 | Tensile fatigue data was generated under carefully controlled test conditions. A computerized data acquisition system was used to permit the measurement of dynamic modulus without interrupting the fatigue cycling. Two different 8-ply laminate configurations, viz, + or - 45 (2s) and + or - 67.5 (2s), of a T300/5208 graphite/epoxy composite were tested. The + or - 45 (2s) laminate did exhibit some modulus decay, although there was no well-defined correlation with applied stress level or number of cycles. The + or - 67.5 (2s) laminate did not exhibit any measurable modulus decay. Secondary effects observed included a small but distinct difference between modulus as measured statically and dynamically, a slight recovery of the modulus decay after a test interruption, and a significant viscoelastic (creep) response of the + or - 45 (2s) laminate during fatigue testing. |
| NASA分類 | COMPOSITE MATERIALS |
| レポートNO | 83N17596
NASA-CR-166019
NAS 1.26:166019
UWME-DR-201-105-1 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/163566 |
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