Tear

Components often fail in service due to the generation and propagation of a special type of rupture called a tear. The tear test configuration measures the resistance to tearing action on a sample. Resistance to tear (tear strength) depends on material anisotropy, the distribution of stress, strain rate, size of shape of the sample, etc. Normally, conclusions of a tear test only apply in the context of the specific test geometry and sample used. This can cause difficulty in applying the results other shapes. Thus, the significance of tear testing must be determined on an individual application or product performance basis.