Impact of interface heterogeneity on joint fracture

Michal Budzik; Julien Jumel; Martin Shanahan

doi:10.1080/00218464.2012.725604

Impact of interface heterogeneity on joint fracture

Abstract

The effects of heterogeneities (weak zones in particular) inadhesive joints and their importance on overall fracture propertiesare relatively unknown, but doubtlessly they may be crucial inmany applications. Using a model heterogeneous adhesive bond,represented by a given mixture of regions of strong and weakadhesion, we have studied the influence of interface variabilityon overall fracture energy (global energy release rate). Adoptingthe original Griffith-Irwin arguments, we have employed a simple,fracture scaling law. By varying relative proportions of the weakand strong interfaces, a nonlinear evolution of fracture energywas observed. This was contrary to expectations, cf. rules ofmixtures. Inspired by rheological models (Maxwell, Voigt=Kelvin,etc.), an appropriate model was found empirically.

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: JOURNAL OF ADHESION no. 88, pages 885 - 902,
ISSN: 0021-8464
Language:: English
Publication year:: 2012
Bibliographic description:: Budzik M., Jumel J., Shanahan M.: Impact of interface heterogeneity on joint fracture // JOURNAL OF ADHESION. -Vol. 88, nr. iss. 11-12 (2012), s.885-902
DOI:: Digital Object Identifier (open in new tab) 10.1080/00218464.2012.725604
Verified by:: Gdańsk University of Technology