Tensile behavior analysis and prediction of steel fiber-reinforced-carbon/glass hybrid composite bars

This paper presents the uniaxial tensile experiment results and analysis of a new steel fiberreinforced-carbon/glass hybrid composite bars (S-CG HCBs). The effects of carbon/glass ratio, steel fiber replacement ratio, fiber volume fraction and fiber arrangement over the cross section on the tensile properties of S-CG HCBs were investigated. In addition, a method for the tensile test of steel fiber was presented. Two damage modes of S-CG HCBs were analyzed based on carbon fiber fracture pattern. The results indicated that the tensile stress-strain relationship of S-CG HCBs could be modified by adding steel fiber. Meanwhile, the yield stress, rupture stress, failure stress, and stress drop at carbon fiber fracture could be controlled effectively by the changes of experimental variables. Finally, a tensile stress-strain model for S-CG HCBs was proposed considering the distribution pattern of carbon and steel fibers through a simple damage analysis.