Tear Strength
Mechanical testing standards that evaluate the force required to propagate a single tear in a fabric help determine durability. The test method iso 13937-2 elmendorf tear utilizes a falling pendulum to measure the energy lost when tearing a trouser-shaped specimen. This test establishes the resistance of woven apparel fabrics to snagging and tearing in daily use.
Pendulum Method
Gravity drives a weighted sector that swings through a specified arc to tear the pre-cut fabric. The iso 13937-2 elmendorf tear procedure registers the force needed to complete the tear by calculating the change in potential energy of the pendulum. This measurement provides a highly accurate reading of dynamic tearing resistance.
Specimen Geometry
Precise cutting of the trouser-shaped test piece ensures that the tear travels in a straight line. Under the iso 13937-2 elmendorf tear standard, samples are prepared in both directions. This dual testing captures directional variations.
Fabric Performance
Woven fabrics with high yarn mobility yield higher tear strength because more yarns group together to resist the tearing force. Results from the iso 13937-2 elmendorf tear test guide manufacturers when selecting finishing chemical formulas that do not cause fabric brittleness. This test is essential for workwear where mechanical durability is a critical requirement of the end-product.
