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The time dependence of surface energy in cohesive fracture
Author(s) -
Bennett S. J.,
Anderson G. P.,
Williams M. L.
Publication year - 1970
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.1970.070140317
Subject(s) - materials science , composite material , epoxy , viscoelasticity , acrylonitrile , copolymer , curing (chemistry) , fracture (geology) , relaxation (psychology) , fracture mechanics , modulus , polymer , social psychology , psychology
The time‐temperature dependence of the cohesive fracture energy is deduced from experiments on a centrally cracked sheet of butadiene‐acrylonitrile‐acrylic acid viscoelastic terpolymer crosslinked with an epoxy curing agent. Analytic results based upon a cylindrical flaw model of the crack permit the segregation of the fracture energy time dependence from that of the relaxation modulus.