Page 182 - Engineered Interfaces in Fiber Reinforced Composites
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164               Engineered interfaces  in jiber reinforced composites

                    growth  for fiber pull-out  than  for fiber push-out. Also,  the  final crack  length  at
                    steady state is significantly shorter for fiber pull-out than fiber push-out. In the same
                    context, the increase in the relative displacements is more difficult for fiber pull-out
                    than for fiber push-out under an identical stress amplitude. These results are more
                    clearly demonstrated by the critical value pc, which is smaller for fiber pull-out than
                    for fiber push-out. All these results of the parametric study based on the power law
                    function imply that the degradation of interface frictional properties is more severe
                    in  fiber  push-out  than  in  fiber  pull-out  under  cyclic loading  of  given  values  of
                    Po, P1,N and 60.

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