Low-velocity impact response of multilayer orthogonal structural composite with auxetic effect

Lili Jiang, Hong Hu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

30 Citations (Scopus)

Abstract

In this study, a kind of novel multilayer orthogonal structural composite with auxetic effect was fabricated for energy absorption and impact resistance. Non-auxetic composite with the same raw materials but with different reinforcement structure was also fabricated for comparison in order to better understand the effect of reinforced structure on the deformation mechanism and mechanical responses of the composites. Since the quasi-static compressive properties and Poisson's ratio effect of composites had been investigated previously, this paper only focused on the study of the low-velocity drop-weight impact tests of composites under impact energies from 7.25 J to 65.25 J. It was shown that both auxetic and non-auxetic composites were strain rate sensitive from 34.23 s−1 to 111.48 s−1, but they exhibited totally different mechanical responses due to different deformation and damage mechanism. Pull out tests demonstrated that strong interfacial bonding between the reinforcements and matrix could ensure the desired deformation of structural reinforcements and auxetic effect of the composite. It was also concluded that the auxetic composite had better energy absorption performance in medium strain range.
Original languageEnglish
Pages (from-to)62-68
Number of pages7
JournalComposite Structures
Volume169
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Energy absorption
  • Low-velocity impact
  • Multilayer orthogonal
  • Negative Poisson's ratio

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

Cite this