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Crack Propagation Across an Adhesive Interlayer in Flexural Loading



James J. Lee, H Chai, Isabel K. Lloyd, Brian R. Lawn


Crack propagation across interlayers separating adjoining brittle plates in flexure is studied using a model glass/epoxy/glass system. A transverse starter crack in the center glass plate is made to propagate to the nearest epoxy interface, where it arrests. System failure occurs at some higher load by crack reinitiation from pre-existing flaws in the adjoining glass surface, and not by continuous penetration through the epoxy. A fracture mechanics analysis is developed to elucidate the role of material and geometrical variables.
Scripta Materialia


adhesive joining, contact loading, crack containment, crack penetration, crack reinitiation, glass


Lee, J. , Chai, H. , Lloyd, I. and Lawn, B. (2007), Crack Propagation Across an Adhesive Interlayer in Flexural Loading, Scripta Materialia, [online], (Accessed March 2, 2024)
Created October 8, 2007, Updated February 19, 2017