Tensile impact behavior of multiaxial multilayer warp knitted (MMWK) fabric reinforced composites

Jian Rong, Baozhong Sun, Hong Hu, Bohong Gu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

The uniaxial tensile behavior of multiaxial multilayer warp knitted (MMWK) E-glass/epoxy composite materials along warp, weft, and bias directions was investigated at high strain rates to analyze the influence of strain rate on tensile properties and failure mode of the MMWK composites under tensile impact. The uniaxial tensile test at strain rates from 1100 to 2200 s-1were conducted with the split Hopkinson tension bar (SHTB) technique. The tensile test at quasi-static state was tested on MTS 810.23 system and compared with those in high strain rates. The results indicate that the failure stress, failure strain, and tensile stiffness are rate sensitive along warp, weft, and bias directions. The failure modes of the MMWK E-glass/epoxy composites under in-plane direction loading are matrix shear failure and yarn breakage in quasi-static state while interface failure and yarn pullout in high-strain-rate loading.
Original languageEnglish
Pages (from-to)1305-1315
Number of pages11
JournalJournal of Reinforced Plastics and Composites
Volume25
Issue number12
DOIs
Publication statusPublished - 1 Aug 2006
Externally publishedYes

Keywords

  • Multiaxial multi-layer warp knitted (MMWK) composites
  • Split Hopkinson tension bar (SHTB)
  • Strain rate
  • Tensile impact
  • Uniaxial tensile

ASJC Scopus subject areas

  • Ceramics and Composites
  • Polymers and Plastics
  • Materials Chemistry

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