Statistical dynamic tensile strength of UHMWPE-fibers

Dynamic tensile properties of UHMWPE fiber bundles were studied at two strain rates and two temperatures. The integral stress–strain curves were obtained. Experimental data show that UHMWPE fiber bundle has strain rate and temperature sensitivity. A fiber-bundle constitutive equation was used to describe the tensile behavior of UHMWPE fiber bundles at high strain rates. The good consistency between the simulated results and experimental data indicates that the 5-parameter Weibull function can represent the tensile strength distribution of UHMWPE fibers and the method of extracting Weibull parameters from fiber bundles stress–strain data is valid.