Analyses of the fiber push-out test

Abstract

A two-dimensional model of the fiber push-out test is considered. Two distinct methods of analysis are independently employed in solving the problem, and their accuracy is indicated by the virtual coincidence of the results. Interfacial debonding is assumed to be characterized by a cohesive zone model, and subsequent slippage obeys a Coulomb friction law. We have found that the results depart from those of the more commonly employed fracture-mechanics approach, if the cohesive zone size is of the order of the fiber diameter. The accuracy of various approximate analyses is discussed.