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Tear resistance (or tear strength) is a measure of how well a material can withstand the effects of tearing. [1] It is a useful engineering measurement for a wide variety of materials by many different test methods .
The tear test (e.g. Kahn tear test) provides a semi-quantitative measure of toughness in terms of tear resistance. This type of test requires a smaller specimen, and can, therefore, be used for a wider range of product forms.
Some materials may be quite resistant to tearing when they are in their full form, but when a small cut or tear is made, the material becomes compromised, and the effort needed to continue tearing along that line becomes less. Materials can be characterized by standard test methods to measure their tear resistance. There are several applicable ...
Absorbed energy is a measure of the material's notch toughness. It is widely used in industry, since it is easy to prepare and conduct and results can be obtained quickly and cheaply. A disadvantage is that some results are only comparative. [1] The test was pivotal in understanding the fracture problems of ships during World War II. [2] [3]
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Although, measurement variations by an order of 10-1 have been observed, the variations can be minimized if suitable precautions are taken. [1] [2] A wear volume versus distance curve can be divided into at least two regimes, the transient wear regime and the steady-state wear regime. The volume or weight loss is initially curvilinear. The wear ...