On the localization of fracture in highly constrained polymeric layer subjected to mode II loading
- National Inst. of Standards and Technology, Gaithersburg, MD (United States)
- Tel-Aviv Univ. (Israel)
The tight spatial constraints imposed on the interlayer by the relatively rigid substrates in adhesive bonding may impede the natural development and growth of damage sources such as voids, kinks and microcracks. This may lead to extensive nonlinear deformations and intense strain localization prior to fracture in ductile or brittle adhesive systems. Moreover, the localized deformation in the bond may be highly triaxial regardless of the nature of the far-field loading. Fracture criteria based on conventional linear elastic fracture mechanics and small-scale yielding condition may not be applicable on large strain. Therefore, the purpose of the authors work is to focus on the local deformation at the crack tip in an effort to demonstrate a fracture criterion, which is independent of the specimen geometry, for the situation in large (or small) plastic deformation.
- OSTI ID:
- 441485
- Report Number(s):
- CONF-960214--
- Country of Publication:
- United States
- Language:
- English
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