Textiles - tear properties of fabrics - part 1 : determination of tear force using ballistic pendulum method elmendorf iso 13937 - 1 : 2000 ; german version en iso 13937 - 1 : 2000 纺织品.织物撕破特性.第1部分:用冲击摆锤法测定撕破
a physical pendulum consisting of a large mass suspended from a rod; when it is struck by a projectile its displacement is used to measure the projectile''s velocity