Abstract
AbstractThe isothermal compression at 200°C of a polypropylene/glass fiber composite was investigated in both axisymmetric and unidirectional flows. The overall stress/strain behavior at various compression strain rates was recorded and the induced orientation of the fibers is investigated. It is shown that, in the high speed range, the macroscopic flow process controlled by both the viscous extension and the relative sliding of parallel fibrous layers. The evolution of the compression force is modeled as the sum of a viscous resistance and an interlaminar friction.
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