Damage to thickness-reinforced C/C laminates by low-energy impact

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Abstract

The damage behavior caused by the low-energy impact on thickness-reinforced carbon/carbon (C/C) laminates was investigated. The C/C laminates were fabricated using isothermal chemical vapor infiltration (CVI) processes under vacuum. A drop weight impact testing was carried out on the laminates. The damages on the C/C laminates were examined using radiography, scanning electron microscopy, optical microscopy and strain analysis. The compressive strength of C/C laminates was observed to increase both before and after impact due to stitching reinforcement in the thickness direction. Through-thickness stitching interrupted delamination propagation and increased the damage tolerance of laminates more than a factor of two.

Original languageEnglish
Pages (from-to)3033-3036
Number of pages4
JournalCarbon
Volume42
Issue number14
DOIs
StatePublished - 2004

Keywords

  • A. Carbon/carbon composites
  • B. Chemical vapor infiltration
  • C. Scanning electron microscopy
  • D. Mechanical properties

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