Abstract
Application of composites in civil engineering, such as repair of bridges and piers by graphite-epoxy composites, is growing rapidly. One of the problems in strength of composite materials is interfacial debonding between the fiber and matrix. We here employ an analytical model considering partial debonding along fiber's interface, and construct a finite element, in which an approximate scheme to calculate the stress re-distribution due to partial debonding is included. Several numerical examples and comparisons with experimental data show the characteristics and feasibility of this model.
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