纤维增强复合材料界面的力学表征与参数测定
MECHANICAL CHARACTERIZATION AND PARAMETER DETERMINATION OF THE FIBER REINFORCED COMPOSITE INTERPHASE
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摘要: 本文对聚合物基纤维增强复合材料界面特性进行细观力学研究。从反映复合材料性能的同心圆柱形代表体元出发,将纤维与基体之间的界面特性用四个柔度参数表征,推广了Hashin等人的双参数模型,并进而同复合材料宏观性能相联系。通过实验首次测定了T300/ST350和玻璃纤维/不饱和聚脂两类复合材料的界面参数值。Abstract: A micromechanics analysis on the interphase of fiber reinforced polymer compolite is presented. The representative volume element of coaxial combined cylinder model is adopted. Four compliance parameters Sij(i,j=1, 2) are used do characterize the interphase effect, which generalizes Hashin's two}arameter interface mode. A relation between these parameters and macro behaviour of composite is established based on the equivalent principle of a multiphase body. By experiment,interfacial parameters are first determined for two kinds of composites:T300/ST 350 and Glass/Polyester.
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Key words:
- polymer matrix /
- composite /
- interphase characterization
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