Simulation of high rate failure mechanisms in composites during quasi-static testing

Abstract

High Rate testing is often difficult to perform, requires specialized equipment and often had results that are difficult to interpret. Being able to simulate the same failure mechanisms at high rates would enable rapid material selection. In this experimental investigation, the mechanical response is determined of different hybrid composites materials. A modified through-the-thickness tests has been used to force a high order of failure mode that is similar to those seen in high speed impact. Failure is observed in the samples and stresses on the surface are determine to help with failure envelope measurements. The details of a comparison between 2D fabrics vs. 3D woven fabrics has been under taken and a comparison will be presented showing the similarities and differences in response. A discussion of the comparison between the high rate testing and the low-rate testing will be investigated and discussion on the applications of the testing will be examined for failure envelope prediction.