A numerical investigation on the interlaminar strength of nanomodified composite interfaces

F. Moroni, Roberto Palazzetti, A. Zucchelli, A. Pirondi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The effect of Nylon 6,6 electrospun nanofibers interleaved in composite laminate material is simulated numerically to investigate the differences in the fracture strength between a nanomodified laminate interface and the corresponding non-modified material. DCB and ENF mechanical test results from a previous work of some of the authors are used as reference for the identification of cohesive zone model by numerical simulations with the finite element software Abaqus using implicit time integration. A bilinear damage law came out to be necessary to match the experimental behavior of the nanomodified interface, while the virgin material can be represented through a simple linear damage law. The necessity of using a bilinear damage law has been related to the crack bridging and to the obstacle to crack growth caused by nanofibers. 

Original languageEnglish
Pages (from-to)635-641
Number of pages7
JournalComposites Part B: Engineering
Volume55
Early online date12 Aug 2013
DOIs
Publication statusPublished - 2 Sep 2013

Keywords

  • delamination
  • mechanical properties
  • numerical analysis
  • mechanical testing
  • numerical investigation
  • interlaminar strength
  • nanomodified composite interfaces

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