期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 19, 期 1-3, 页码 68-78出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2011.572238
关键词
thermo-oxidation; polymer composite; micromechanics; homogenization; modeling
类别
资金
- NASA [NRA-NNH06ZEA001N]
Mechanism-based modeling of damage evolution in high temperature polymer matrix composites (HTPMC) under thermo-oxidative aging conditions is presented in this article. Specifically, a multi-scale model based on micro-mechanics analysis in conjunction with continuum damage mechanics is developed to simulate the accelerated fiber-matrix debond growth in the longitudinal direction of a unidirectional HTPMC. The benchmark of model prediction with experimental observations of oxidative debond growth is presented. In addition to themicromechanics-based damage evolution model, effective diffusivity of a composite lamina at the macroscale is also developed based on diffusivities of the fiber and polymer matrix phases using a homogenization technique.
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