Effects of high strain rate compression on the mechanical properties of a uniweave AS4/3501-6 composite laminate with through-thickness stitching

摘要

A split Hopkinson pressure bar is used to obtain high-strain-rate, compressive mechanical properties of a uniweave AS4/3501-6 composite laminate with and without reinforcement stitching in the through-thickness. ^Due to geometry restrictions on the test specimens, stitched specimens contain only a single, through-thickness stitch. ^This study gives insight into stitching effects local to the stitched area. ^For both in-plane and out-of-plane directions, the compressive mechanical properties of yield stress, yield strain, ultimate strength, ultimate strain, and modulus of elasticity are determined for strain rates varying from 234 to 1216/s. ^(Author)