Five samples for the warp and five samples for the weave must be tested for each material. Test: the test piece is fixed on the clamps, with a leg on each of them. The test piece non-cut part is free. The dynamometer is turned on with a 100 mm/min constant speed, moving one of the clamps (mobile clamp) and the tearing must be continued until it arrives to the marked point 2,5 cm of the test piece's edge.