航空学报 > 1991, Vol. 12 Issue (12): 643-646

复合材料层压板疲劳特性的试验研究

柴亚南, 沈真, 李顺和   

  1. 飞机强度研究所
  • 收稿日期:1991-02-26 修回日期:1991-07-10 出版日期:1991-12-25 发布日期:1991-12-25

EXPERIMENTAL STUDY ON FATIGUE BEHAVIOUR OF COMPOSITE LAMINATE

Chai Yanan, Shen Zhenand Li Shunhe   

  1. Aircraft Strength Research Institute
  • Received:1991-02-26 Revised:1991-07-10 Online:1991-12-25 Published:1991-12-25

关键词: 复合材料, 疲劳, 寿命预测

Abstract: Fatigce tests with smooth and notched specimens of T300/QY8911 composite are performed under constant amplitude fatigue loading(R =-1), and two S-N curves are obtained. Spectrum fatigue tests are also conducted for the notched specimens. The test results are compared with the predicted results using Miner' s theory and Brout-ma's linear residual strength degradation model. It is found that both Miner's theory and the linear residual strength degradation model are to overestimate the fatigue life, and for the present cases the prediction from the linear residual strength degradation model is better than that from Miner's theory. In addition, the test method was also described in detail.

Key words: composite, fatigue, life predication