Abstract
Split Hopkinson’s pressure bar experiments are conducted to analyze dynamic compression behavior of high temperature exposed glass filled epoxy composites. Two filler variants, spherical and slender, up to 10% volume fraction, are uniformly dispersed into the matrix. Room temperature curing is followed by exposing the composites to a temperature up to 180 °C. Slender fillers affect overall compression characteristics whereas the influence of slender fillers is observed only in post-yield regime. Computational analysis in combination with experimental observations reveals two competing deformation mechanisms, constraints provided by fillers to polymeric chain movement and complex interaction of stress fields around the fillers.
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