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Characterization of the fracture behavior of polyethylene using measured cohesive curves. II. Variation of cohesive parameters with rate and constraint
Author(s) -
Ting S.K.M.,
Williams J.G.,
Ivankovic A.
Publication year - 2006
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20544
Subject(s) - materials science , fracture (geology) , polyethylene , constraint (computer aided design) , ultimate tensile strength , composite material , mechanical engineering , engineering
Abstract The effects of constraint and rate on the measured cohesive parameters are presented. The parameters were extracted from results of an experimental study of the constraint and rate‐dependent fracture behavior of tough polyethylene using circumferentially notched tensile specimens described in a preceding companion paper. The study found that the cohesive parameters, the energy of separation ( Γ ), the cohesive strength ( σ peak ), and the break separation ( δ break ), are interrelated and no single fracture parameter can be adequately used independently to describe the fracture behavior. POLYM. ENG. SCI., 46:778–791, 2006. © 2006 Society of Plastics Engineers