Experimental study on tensile properties of steel plate bonded by CFRP

Abstract

The tensile properties of five groups of composite specimens, which consist of steel plate bonded by CFRP, were experimentally researched. The failure types, performing characteristics and failure mechanism of the composite specimens were investigated in detail. The influence of different ratio of CFRP on bearing capacity, loading-strain curves, compound modulus, rigidity and ductility of the composite specimens was analyzed. The experimental results indicate that the composite specimen can work harmonically and the steel plate does not break in tension. Comparing with steel plate, the bearing capacity and the rigidity of the composite specimens increase and ductility decreases. The bearing capacity increases sharply with the increase in the number of layers of CFRP. With the increase in CFRP, the yield strength increases slightly and ductility decreases. The experimental researches can provide a theoretical basis for engineering application of combination strengthening.

Keywords

steel plate / Carbon Fiber Reinforced Polymer (CFRP) / combination strengthening / tensile properties / experimental study

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