Abstract

It has long been accepted that high correlation exists between the tearing loads obtained from the Baumann tear test (TIJP/8) and the ALCA test E 10, slightly modified by SATRA and designated PM 30. Recently, however, the tearing energy has been put forward as a better criterion of tear resistance. The work described in this paper has therefore been concerned primarily with comparing various tearing criteria for the two test specimen shapes. It is concluded that the tearing energies obtained from the two tests correlate well with each other, although some semichrome leathers are anomalous.