Compression behavior and energy absorption of carbon fiber reinforced composite sandwich panels made of three-dimensional honeycomb grid cores

Jian Xiong, Ashkan Vaziri, Ranajay Ghosh, Hong Hu, Li Ma, Linzhi Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


Carbon fiber reinforced three dimensional egg and pyramidal honeycomb grids cores with interconnected void spaces were fabricated using an interlocking method. The out-of-plane compression properties, failure modes, and energy absorption capacity of all-composite sandwich panels made of the new 3D grid cores were investigated. The analytical models for predicting the compressive stiffness and strength of both egg and pyramidal honeycomb grids cores were derived. The results showed that the fabricated sandwich panels have higher specific energy absorbing abilities compared to lightweight square honeycombs of same density (10-100 Kg/m. 3). The new core design promises novel applications for lightweight multifunctional structures due to increased flow in the inner spaces of the core construction, embedding of electrical lines, enhanced heat transfer, fuel storage and higher energy absorption compared to traditional cores.
Original languageEnglish
Pages (from-to)114-120
Number of pages7
JournalExtreme Mechanics Letters
Publication statusPublished - 17 Feb 2016


  • Carbon fiber sandwich
  • Interlocking
  • Multifunctional
  • Three dimensional grid

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Engineering (miscellaneous)
  • Chemical Engineering (miscellaneous)
  • Bioengineering

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