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Elmendorf Tear Test of Polyethylene Films: Mechanical Interpretation and Model

✍ Scribed by Yury V. Kissin

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
486 KB
Volume
296
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

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. magnified image

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## Abstract A physical model of dart impact tests of film manufactured from semi‐crystalline polyethylene resins is developed. The models treat the dart impact tests as a special case of the standard high‐speed stress/strain measurement performed on a polymer sample with a linearly changing cross s