DS DS/EN ISO 13937-4
DS DSEN SO 13937-4 2000-JUL-21 Textles - Tear propertes of fabrcs - Part 4 Determnaton of tear force of tongue-shaped test specmens Double tear test
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This standard describes a double-tear method known as the tonque test, using a test specimen with cuts shaped to form a tongue. The tear force measured is the force required to propagate the previously started double tears when the force is applied parallel to the cuts and the fabric tears in the direction of the applied force.