Experimental Study on Tensile Properties of Steel Plate Bonded by CFRP

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 dif-ferent 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 com-posite 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 experi-mental researches can provide a theoretical basis for engineering application of combination strengthening.