Journal Published Online: 05 August 2010
Volume 39, Issue 2

Analysis of Fracture in Aluminum Joints Bonded with a Bi-Component Epoxy Adhesive



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.

Author Information

Alfano, M.
Dept. of Mechanical Engineering, Univ. Calabria, Rende, Cosenza, Italy
Furgiuele, F.
Dept. of Mechanical Engineering, Univ. of Calabria, Rende, Cosenza, Italy
Pagnotta, L.
Dept. of Mechanical Engineering, Univ. of Calabria, Rende, Cosenza, Italy
Paulino, G.
Newmark Laboratory, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, Urbana, IL
Pages: 8
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Stock #: JTE102753
ISSN: 0090-3973
DOI: 10.1520/JTE102753