Stability of the face layer of sandwich beams with sub-interface damage in the foam core

V. Koysin, Vitaly Skvortsov, Andrey Shipsha

Research output: Contribution to journalArticleAcademic

12 Citations (Scopus)


This paper addresses the effect of local indentation/impact damage on the bearing capacity of foam core sandwich beams subjected to edgewise compression. The considered damage is in a form of through-width zone of crushed core accompanied by a residual dent in the face sheet. It is shown that such damage causes a significant reduction of compressive strength and stiffness of sandwich beams. Analytical solutions estimating the Euler’s local buckling load are obtained for two typical modes of damage. These solutions are validated through experimental investigation of three sandwich configurations. The results of the analytical analysis are in agreement with the experimental data.
Original languageUndefined
Pages (from-to)507-518
JournalComposite structures
Issue number4
Publication statusPublished - 2007


  • Euler’s load
  • Local damage
  • Local buckling
  • Sandwich structure
  • IR-75529
  • Residual dent
  • Low-velocity impact
  • Crushed foam core
  • Indentation

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