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TEAR STRENGTH
Tear Strength
is the force required to rip a sample of plastic film, sheeting or rubber product.
An unnicked 90-degree angle specimen is used to measure the tear resistance of foam.
Calculation:
Calculate the resistance to tear from the maximum force registered by the testing machine and the thickness of the specimen, and express as the force in newtons (or kilogram, pounds-force) required to tear a specimen 1 m (or 1cm, 1 inch) in thickness. Tear Strength = F / t where: F = force, N (kg, lbf). t = specimen thickness, m (cm, inch).  |
