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Kinetics of the spontaneous peeling of elastomers
Author(s) -
Barquins Michel
Publication year - 1984
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1984.070291106
Subject(s) - materials science , viscoelasticity , elastomer , composite material , strain energy release rate , dissipation , fracture mechanics , adhesive , activation energy , adhesion , energy balance , substrate (aquarium) , kinetics , delamination (geology) , strain energy , fracture (geology) , thermodynamics , layer (electronics) , classical mechanics , chemistry , physics , paleontology , oceanography , tectonics , organic chemistry , finite element method , biology , subduction , geology
The spontaneous delamination of an elastomer strip in contact on a deformable substrate is studied. Theoretically, the system is analysed in terms of the energy balance theory of fracture by the general equation G − w = w · Φ(α θ · Φ), proposed by Maugis and Barquins in 1978, in which G is the strain energy release rate, w the Dupré's energy of adhesion, and Φ a dissipation function characteristic of the viscoelastic material and of the propagation in mode I, only depending on the temperature through the WLF shift factor α θ and on the crack propagation speed ν. It is shown that the knowledge of the function Φ, which represents viscoelastic lossed localized at the crack tip, allows one to predict the kinetics of the spontaneous peeling and the force applied to the system. Experiments realized with two polyurethane strips in adhesive contact, one strip used as substrate being submitted to instantaneous or increasing tensile elongations, verify theoretical predictions with a reproducibility better than 3%.