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Tear resistance is the measurement of how much pressure a material can withstand before tearing. In terms of tires, tear resistance plays a major role in the longevity and dependability of a tire.
The resistance of rubber to any cuts and abrasions when under pressure determines its tear resistance. This is normally measured in kN/m. Tear resistance is measured by the ASTM D412 method which is also applicable to measuring elongation, stencil strength and modulation. The defiance to the development of a tear – tear initiation - and the further growth of the tear – tear propagation - are measured under the ASTM D 624 method.
Whether a tear initiation or tear propagation is being measured the method is the same; where the tester is held between two clamps and a structured force is applied until a tear occurs. Tear resistance is then measured by dividing the applied force against the thickness of the material used in the sample.
Gas Black is the best performer for reducing tear resistance while whiting and clay are known to reduce resistance.
It is noted that a well cured stock using gas black develop mechanical fibres that go a long way in tear resistance. Tear resistance is an integral component of a tire especially in industrial tires. Weakness of bonds between mechanical fibres can lead to higher tear risks hence it is imperative that high performance tires are purchased from a reputed company constantly researching and improving on tire efficiency, such as GRI Tires. Enjoy the economical and safety benefits of choosing tires developed to stringent quality standards.
Tires used for industrial purposes are most exposed to high pressure and weight management. Tire manufacturers specialising in material handling tires such as those used for forklifts and cranes constantly carry out test to improve the resilience of industrial grade tires. This same concern extends to tires manufactured for agricultural vehicles, industrial and construction vehicles and off road vehicles.
Manufacturers like GRI stick to quality standards set out by OEM Suppliers for equipment handling vehicles. Hiring the best professionals and equipping them with state of the art laboratories for stringent quality and safety checks are also important aspects of a top tire manufacturer.
