The stress distribution on the boundary of crazes in polyethylene by the direct and semi-theoretical method
1989; Elsevier BV; Volume: 30; Issue: 3 Linguagem: Inglês
10.1016/0032-3861(89)90013-x
ISSN1873-2291
AutoresXueqin Wang, Norman Brown, Leif-Olof Fager,
Tópico(s)Mechanical Behavior of Composites
ResumoThe stress distribution was determined on the boundary of crazes in a homopolymer and copolymer of polyethylene. The direct method was based on the direct measurement of the strain distribution and the stress-strain curve of the matrix. The semi-theoretical method was that of Wang and Kramer where the displacement profile of the craze was measured and the stress was calculated by a linear theory of elasticity. The assumption of linear elasticity in the matrix produces higher values of the stress when compared to the results of the direct method and the shape of the stress distribution is somewhat different.
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