STUDYING THE MECHANICAL PROPERTIES OF TIRE RUBBER BEFORE AND AFTER CONSUMPTION
Keywords:
Rubber, Tire, Tensile strength, hardnessAbstract
The purpose of this studying is to investigation of the mechanical characteristics of the rubber tires before and after consumption. A new and old car tires were used and three samples from each tire were used to prepare the samples [tensile strength, hardness, and wear]. When the sample is examined, it's found that the tire before use had a tensile value of 11.5 MPa and a hardness value of 56.5 and the tire after use had a tensile value of 4.5 MPa and a hardness value of 72.5, meaning that the tire after use has less hardness and tensile strength. This is due to the breakage of the chains in the rubber due to friction and heat between the ground and the rubber. The results of the wear test show that the weights losses of the tires before using after part "half" an hour on the wear device is 0.001g, and the weight losses of the tire after using after "half" an hour on the wear device is 0.0015g, therefore the weight loss of the sample are few since the rubbers are reinforced by many type of fibers.
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