Large damage capability of non-crimp fabric thin-ply laminates

A. Arteiro, G. Catalanotti, J. Xavier, P. P. Camanho*

*Corresponding author for this work

Research output: Contribution to journalArticle

29 Citations (Scopus)
238 Downloads (Pure)

Abstract

The residual strength of thin-ply non-crimp fabric laminates with large through-the-thickness cracks is investigated in this paper. Analysis methods such as the linear elastic fracture mechanics, inherent flaw, point-stress, average-stress and Finite Fracture Mechanics are used to predict large damage capability. Experiments show that thin-ply non-crimp fabric laminates exhibit high resistance to propagation of large cracks and a remarked crack-bridging effect. Due to the unsuitability of existing models to capture such bridging processes, large damage capability is systematically underestimated by the traditional analysis methods. By taking into account the R-curve of the material in the Finite Fracture Mechanics analysis good predictions of the notched response of laminated plates with large through-penetration damage are obtained using only independently measured material properties; in addition, the Finite Fracture Mechanics model does not require fitting parameters or complex finite element analyses. 

Original languageEnglish
Pages (from-to)110-122
Number of pages13
JournalComposites Part A: Applied Science and Manufacturing
Volume63
Early online date18 Apr 2014
DOIs
Publication statusPublished - Aug 2014
Externally publishedYes

Keywords

  • A. Laminates
  • B. Stress concentrations
  • C. Analytical modelling
  • D. Mechanical testing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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