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Significance and Use
Vulcanized rubber and thermoplastic elastomers (TPE) often fail in service due to the generation and propagation of a special type of rupture called a tear. This test method measures the resistance to tearing action.
Tear strength may be influenced to a large degree by stress-induced anisotropy (mechanical fibering), stress distribution, strain rate, and test piece size. The results obtained in a tear strength test can only be regarded as a measure under the conditions of that particular test and may not have any direct relation to service performance. The significance of tear testing must be determined on an individual application or product performance basis.
1.1 This test method describes procedures for measuring a property of conventional vulcanized rubber and thermoplastic elastomers called tear strength.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D1349 Practice for Rubber--Standard Temperatures for Testing
D3182 Practice for Rubber--Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
D3183 Practice for Rubber--Preparation of Pieces for Test Purposes from Products
D3767 Practice for Rubber--Measurement of Dimensions
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ISO StandardISO/34 Rubber, Vulcanized - Determination of Tear Strength (Trouser, Angle, and Crescent Tear Pieces) Available from American National Standards Institute, 11 West 42 nd St., 13th Floor, New York, NY 10036.
ICS Number Code 83.060 (Rubber)
UNSPSC Code 13101601(Vulcanized rubber); 13101606(Thermplastic rubber)