Tensile properties in the through-thickness direction for a carbon fiber woven reinforced compositeat impact loading rate

Abstract
To understand the dynamic tensile properties in the through-thickness direction for a carbon fiber 2-D woven reinforced polymer matrix composite, numbers of dynamic tensile experiments were conducted, in which a rotating disk impact loading system was adopted. The tensile stress-strain curves with two-peak and low tensile strengths, small ultimate strains, at three strain rates were achieved. It was found that the tensile strengths for the composite exhibited strain rate strengthen effects, and the ultimate strains were nearly independent of strain rate. The two-peak phenomenon of the tensile stress-strain curves was discussed, which was thought to be related to the waviness of the carbon fiber woven layers that restricted the delamination and matrix splitting.