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Multiscale Analysis of Environmental Degradation in Composite Materials

ZIFENG YUAN, JACOB FISH

Abstract


There are variety of factors affecting degradation of composite materials due to environmental effects. In the present manuscript, two sources of degradation are studied. We first consider an accumulation of damage in carbon-fiber/epoxy-resin material system subjected to cyclic load. A space-time multiscale approach is developed wherein carbon fiber is modeled by continuum damage model whereas damage accumulation in epoxy is modeled by a hybrid fatigue damage-plasticity model. We then consider degradation of glass-fiber/Nylon material system due to moisture accumulation. A multiphysics-multiscale approach is developed by which a coupled diffusion-reaction-mechanical process is simulated at multiple spatial scales.


DOI
10.12783/asc2017/15362

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