Transverse impact behavior of knitted carbon-fiber fabric-reinforced thermoplastic composite sheets

J. Karger-Kocsis, Q. Yuan, J. Mayer, E. Wintermantel

Research output: Contribution to journalArticle

19 Citations (Scopus)


Instrumented falling weight impact (IFWI) properties of two-dimensional (2D) weft-knitted carbon-fiber (CF)-reinforced poly(ethyl methacrylate) (PEMA) and poly(ether ether ketone) (PEEK) composites with a reinforcement content of Vf ≈ 35 and 51 vol.%, respectively, were studied under low-energy and perforation impact conditions. Results indicated that the transverse impact response of these thermoplastic composites strongly depends on the ductility of the matrix, on fiber/matrix adhesion, and on the stitch (rib) structure (size, stretching of the fabrics) of the knitted fabric reinforcement. The highest thickness-related perforation impact energy was found for the knitted CF-reinforced PEEK composite (≈ 15 J/mm) due to its high reinforcement content, high matrix ductility, and good fiber/matrix bonding.

Original languageEnglish
Pages (from-to)163-172
Number of pages10
JournalJournal of Thermoplastic Composite Materials
Issue number2
Publication statusPublished - Mar 1997


  • Failure
  • Instrumented impact
  • Knitted fabric-reinforced
  • Poly(ether ether ketone) PEEK
  • Poly(ethyl methacrylate) PEMA

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics

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