Abstract
Tensile strength of undirectional laminate FRPs reinforced with carbon fiber and aramid fiber were statically measured. Then, the effects of the ratio of volume fractions of the CFRPs layers to AFRPs layers and that of the thickness of the laminates on the tensile strength of the hybrids were discussed. As the results, it was found that (1) The lamina of AFRPs in this hybrid FRP tends to arrest the crack propagation, and as the thickness of the lamina is decreased, the effect would be more remarkable. (2) A hybrid FRP with volume ratio of 1 to 1 for CFRP and AFRP, has an equivalent tensile strength of the CFRP and an equivalent failure strain of the AFRP.
