Effect of insert material on artificial delamination performance in composite laminates

Yann M. Le Cahain*, Jake Noden, Stephen R. Hallett

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)
72 Downloads (Pure)

Abstract

Delamination, a major cause of composite failure, is often simulated in experiments using artificial film inserts. In many cases the material used to create these inserts in not carefully controlled. Here a series of tensile tests were performed on central cut ply specimens with different insert film materials in both glass fibre epoxy (E-glass/913) and carbon fibre epoxy (IM7/8552) from which the mode II energy release rate can be calculated from the load at failure. When compared to specimens without inserts, some of the film inserts give a mode II the energy release rate, with considerable variation with film material. Also it was found that a change in specimen material can influence the effectiveness of the insert used.

Original languageEnglish
Pages (from-to)2589-2597
Number of pages9
JournalJournal of Composite Materials
Volume49
Issue number21
DOIs
Publication statusPublished - 18 Sep 2015

Keywords

  • Carbon fibre
  • delamination
  • fracture toughness
  • glass fibre
  • mechanical testing

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