Analysis of fracture in aluminum joints bonded with a bi-component epoxy adhesive

M. Alfano, F. Furgiuele, L. Pagnotta, G. H. Paulino

Research output: Contribution to journalArticle

Abstract

Adhesive bonding is a viable alternative to traditional joining systems (e.g., riveting or welding) for a wide class of components belonging to electronic, automotive, and aerospace industries. However, adhesive joints often contain flaws; therefore, the development of such technology requires reliable knowledge of the corresponding fracture properties. In the present paper, the candidate mode I fracture toughness of aluminum/epoxy joints is determined using a double cantilever beam fracture specimen. A proper data reduction scheme for fracture energy calculation has been selected based on the results of a sensitivity analysis. Furthermore, a scanning electron microscope is used in order to explore the locus of failure. Finally, the experimental findings are assessed by means of numerical simulations of crack growth carried out using a cohesive zone model.

Original languageEnglish (US)
JournalJournal of Testing and Evaluation
Volume39
Issue number2
DOIs
StatePublished - Mar 1 2011

Keywords

  • Cohesive zone model
  • Epoxy adhesive
  • Fracture

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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