Influence of areal density on the energy absorbed by thin composite plates subjected to high-velocity impacts Articles uri icon

publication date

  • October 2012

start page

  • 444

end page

  • 452

issue

  • 7

volume

  • 47

international standard serial number (ISSN)

  • 0309-3247

electronic international standard serial number (EISSN)

  • 2041-3130

abstract

  • This work analyses the influence that the areal density of a composite thin-plate, made of glass-fibre woven laminates and subjected to high-velocity impact, exerts on perforation-threshold energy, contact time, and energy-absorption mechanisms. The perforation-threshold energy increased with the areal density. Also, the contact time increased at impact energies above the perforation-threshold energy and decreased below this threshold. The main energy-absorption mechanisms at impact energies close to that causing perforation were found to be the deformation and failure of the fibres, regardless of the areal density. For higher impact energies, the main mechanisms were fibre failure and the energy absorbed by acceleration of the laminate.

keywords

  • High-velocity impact
    Glass-fibre laminates
    Modelling