Tearing Tester

The GLOBE Elmendorf Tear Tester consists of a brass sector pendulum pivoted on low-friction ball bearings over a vertical bracket fixed on a rigid metallic base. The test specimen, in shape of a rectangle, is held between two clamps, one of which is mounted on the pendulum and the other is mounted on the vertical bracket. The clamps are mounted in such a manner that their holding faces are aligned with each other when the pendulum is locked in its raised position. The pendulum is released by lifting a release lever. This action causes the pendulum to fall down under its weight and to tear the test specimen while doing so. The energy absorbed during tearing is indicated on a scale fitted on the pendulum by a low friction pointer pivoted on the axis of the pendulum.
An adjustable knife is also mounted on the pendulum support bracket. It is centered between the two clamps and is used for making the initial slit in the test specimen.
A check weight is supplied with the tester for verification of the scale.
The apparatus is finished in shore blue matalic painting and bright chrome plating to give it a corrosion resistant finish.
Augmenting weights for increasing the range of the tester for testing high strength materials are available as optional accessories. Low strength materials can be tested by mounting multiple specimens at the same time.