An experimental study on the tensile behavior of Kevlar fiber reinforced aluminum laminates at high strain rates

In this paper, tensile behavior of Kevlar fiber reinforced aluminum laminates (KRALL) has been determined at strain rates 100, 500 and 1300 s−1. Yield strength, tensile strength and failure strain of the composite all increased with increasing strain rate. The application of pre-stress on KRALL increased the yield strength, decreased the failure strain, but had no effect on the tensile strength. A linear damage model has been combined with Weibull distribution function to establish a constitutive equation for KRALL. The results show that strength of KRALL obeyed the bimodal Weibull distribution, and the strength of pre-stressed KRALL obeyed unimodal Weibull distribution.