Low-velocity impact damage research on 2-dimentional UHMWPE/CF hybrid woven laminates under preloading

This paper provides a comprehensive understanding of the influence mechanism of preloading on low-velocity impact resistance of Carbon Fiber Reinforced Polymer Composite (CFRP) Laminates toughened with Ultrahigh Molecular Weight Polyethylene (UHMWPE) fiber in the form of two-dimensional hybrid woven. An innovative preloading apparatus with patent number CN110426278A was developed to apply two kinds of preloading: uniaxial tension and uniaxial compression. Three-dimensional distribution of internal damage and failure patterns obtained by high-resolution optical imaging and X-ray computed tomography, together with Scanning Electron Microscope (SEM) were employed to explain the experimental findings and relevant failure mechanisms.

Automated summary

This paper provides a comprehensive understanding of the influence mechanism of preloading on low-velocity impact resistance of CFRP laminates toughened with UHMWPE fiber. An innovative preloading apparatus was developed to apply two kinds of preloading, and high-resolution imaging techniques were employed to analyze internal damage and failure patterns. The experimental findings and relevant failure mechanisms were explained using SEM analysis.