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Phenomenological aspects of viscoelastic crack propagation
Author(s) -
Kobayashi Akira,
Ohtani Nobuo,
Sato Tadashi
Publication year - 1974
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.1974.070180605
Subject(s) - viscoelasticity , materials science , fracture mechanics , composite material , brittleness , phenomenological model , strain rate , fracture (geology) , crack growth resistance curve , strain gauge , mechanics , crack closure , physics , condensed matter physics
The strain rate dependence on dynamic crack propagation in viscoelastic solids was experimentally verified for PMMA by the velocity gauge method and fracture surface observation. It was found that the dependence was mainly due to the viscous term effect, and this was supported by the observation of deviation of the stress‐strain curve from an elastic case. The elastic brittle crack propagation can be realized only in the high‐strain rate case for PMMA.