Tensile Properties of Film - ASTM D882
Test specimens should have a width to thickness ratios of at least 8:1. Two sets of specimens are tested for anisotropic materials, the first set parallel to the direction of polymer orientation (MD - machine direction) and the second set perpendicular to the direction of polymer orientation (TD - transverse direction).
|Elongation @ Break||Tensile elongation corresponding to the point of rupture.|
|Elongation @ Yield||Tensile elongation corresponding to the point of yield.|
|Tensile Strength @ Break||Tensile stress corresponding to the point of rupture.|
|Tensile Strength @ Yield||Tensile stress corresponding to point of yield.|
|Secant Modulus||Slope of a line drawn from the point of zero strain to a point on the stress strain curve at a specified strain.|
|Film Toughness||Energy per unit volume absorbed by a specimen up to the point of rupture during a tensile test. The area under the stress strain curve.|