Fracture behaviour of adhesively bonded joints in sandwich composite beams

Khaled Shahin, Farid Taheri

Research output: Contribution to journalArticle

Abstract

Adhesive bonding is widely accepted as one of the most efficient and practical techniques for joining fiber-reinforced polymer (FRP) adherends. Additionally, configuration of such adherends with a core material into a sandwich composite produces structural elements with superior flexural stiffness and strength. While several studies have investigated the performance of bonded joints of FRP adherends, investigations into characterization of bonded joints in sandwich composites are limited. In this paper, the results from a comprehensive experimental investigation into the fracture toughness of adhesively bonded joints, with particular emphasis on the performance of adhesive joints between sandwich beams are presented. Experimental results showed no significant dependency between the adhesive fracture toughness and the adhesive layer thickness, while the analytical and finite element results indicated that the adhesive layer properties would influence the strain energy release rate and the ratio between modes I and II in mixed-mode.

Original languageEnglish (US)
Pages (from-to)1531-1546
Number of pages16
JournalJournal of Adhesion Science and Technology
Volume23
Issue number10-11
DOIs
StatePublished - Jul 1 2009

Keywords

  • Adhesive fracture toughness
  • Bonded joints
  • Fatigue
  • Fracture
  • Mix-mode fracture
  • Sandwich composite

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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