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Initial slow crack growth behavior followed by rapid brittle fracture in a viscoelastic solid
Author(s) -
Kobayashi Akira,
Ohtani Nobuo
Publication year - 1977
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.1977.070210517
Subject(s) - materials science , brittleness , viscoelasticity , crack growth resistance curve , fracture mechanics , crack closure , composite material , fracture (geology) , brittle fracture , crack tip opening displacement , fracture toughness
Initial dynamic crack propagation behavior in a viscoelastic solid just after crack initiation was investigated by newly devised instrumentation at different temperatures. It was observed that initial slow crack growth precedes rapid brittle fracture. The very initial slow crack growth first appears as ductile fracture and successively as brittle crack propagation, and the latter only exists within very short crack passage. It is also recognized that this slow crack growth in a brittle manner greatly depends on the temperature.