The tear propagation resistance is mainly determined for flat films and elastomer products. The tear propagation resistance is a mechanical parameter used to describe the tearing behavior of a sample or workpiece.
A clamped test specimen is provided with an incision of a defined length. The tearing process initiated by the tensile testing machine is recorded as a force-extension diagram. It is then used to calculate the tear propagation resistance.
Depending on the material to be tested, different test specimen geometries are used.