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Elmendorf Tear Test of Polyethylene Films: Mechanical Interpretation and Model
Author(s) -
Kissin Yury V.
Publication year - 2011
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201000419
Subject(s) - materials science , necking , tear resistance , composite material , stress–strain curve , stress (linguistics) , ultimate tensile strength , deformation (meteorology) , linguistics , philosophy
A physical model of one of the principal end‐use tests of film manufactured from linear low‐density and low‐density PE resins, the Elmendorf tear test (ASTM D1922, ISO 6383‐2), is described. According to this model, the tear test of film is a special case of a high‐speed stress/strain measurement performed on a polymer sample with a varying cross‐section. The tear resistance of film is a function of all the parameters that characterize the stress/strain curve of the resin: stresses and strains at the yield, the necking, and the breaking points. The model affords estimations of tear resistance of semi‐crystalline PE film and provides explanations for differences between tear strength of film manufactured from different types of resins.