Impact and post impact behavior of composite sandwich panels

Patrick M. Schubel, Jyi Jiin Luo, Isaac M. Daniel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

137 Scopus citations


Assessing the residual mechanical properties of a sandwich structure is an important part of any impact study and determines how the structure can withstand post impact loading. The damage tolerance of a composite sandwich structure composed of woven carbon/epoxy facesheets and a PVC foam core was investigated. Sandwich panels were impacted with a falling mass from increasing heights until damage was induced. Impact damage consisted of delamination and permanent indentation in the impacted facesheets. The Compression After Impact (CAI) strength of sandwich columns sectioned from these panels was then compared with the strength of an undamaged column. Although not visually apparent, the facesheet delamination damage was found to be quite detrimental to the load bearing capacity of the sandwich panel, underscoring the need for reliable damage detection techniques for composite sandwich structures.

Original languageEnglish (US)
Pages (from-to)1051-1057
Number of pages7
JournalComposites Part A: Applied Science and Manufacturing
Issue number3
StatePublished - Mar 2007


  • A. Carbon fiber composite
  • B. Damage tolerance
  • B. Impact behaviour
  • C. Post impact behavior
  • D. Mechanical testing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials


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