In order to realize the convenient and high-precision evaluation of the fatigue life of carbon fiber reinforced composites,the fatigue tests of two kinds of carbon fiber reinforced resin matrix composites under different stress ratios are carried out.The fatigue failure process and failure mode under different stress ratios are analyzed,and a fatigue life assessment model of carbon fiber reinforced composites considering stress level and stress ratio is put forward.The applicability of the model is verified by the tension-compression and compression-compression fatigue tests of the two kinds of materials,and the estimated life deviation from the test life is less than 2.5 times the dispersed band.
关键词
复合材料/疲劳寿命/疲劳失效/应力比/预测模型
Key words
composite/fatigue life/fatigue failure/stress ratio/prediction model
维普
万方数据