In-situ repair of composite sandwich structures using cyanoacrylates

Jack Cullinan, Michael Wisnom, Ian Bond, Paul Velut, Veronique Michaud

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

5 Citations (Scopus)
310 Downloads (Pure)

Abstract

A novel method for the in-situ repair of composite sandwich structures using microvascular networks and cyanoacrylate (CA) adhesive systems has been presented. Upon a damage event, the vascules become ruptured, providing a route for the introduction of adhesive directly into the damage site. The efficacy of the two repair agents was first assessed under static and fatigue conditions using a modified double cantilever beam (DCB) method. Once baseline fracture behaviour of the cyanoacrylates has been established, they were further assessed by injection into a series of pre-damaged T-joint specimens. The presence of the vasculature was shown to have no detrimental impact on mechanical performance, whilst both of the cyanoacrylates were shown to be highly effective in the recovery of stiffness and ultimate strength of the T-joint specimens.
Original languageEnglish
Pages (from-to)203-211
Number of pages9
JournalComposites Part A: Applied Science and Manufacturing
Volume87
Early online date4 May 2016
DOIs
Publication statusPublished - Aug 2016

Keywords

  • Sandwich Structures
  • Fatigue
  • Damage Tolerance
  • Self-Healing

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