ASTM D 1004 - Tear Resistance (Graves Tear) of Plastic Film and Sheeting

2017-07-07   WANCE

This test method2 covers the determination of the tear resistance of flexible plastic film and sheeting at very low rates of loading, 51 mm [2 in.]/min. and is designed to measure the force to initiate tearing. The specimen geometry of this test method produces a stress concentration in a small area of the specimen. The maximum stress, usually found near the onset of tearing, is recorded as the tear resistance in newtons [or pounds-force]. The method is not applicable for film or sheeting material where brittle failures occur during testing or where maximum extension is greater than 101.6 mm [4 in.].

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