Tensile strength
Tensile strength measures the maximum tensile stress reached in stretching a sample to its breaking point. The strength is written as the force per unit of the original cross section of the sample length.
Elongation.
Elongation measurys the expansion created by a tensile force. The measurement criterion is the percentage of the original cross section of the sample length. Ultimate elongation is the elongation at the point of breaking.
Tensile modules.
Tensile modulus is a combination of tensile strength (stress) and elongation. It measures the stress required to achieve a certain elongation.
Tensile tests are used to indicate the effect of various compounding materials. The tests are sensitive to shifts in manufacturing conditions. They can be used to identify.
Under-or overvulcanization.
Poor blending.
The presence of foreign materials.
An example of a testing machine for tensile stress-strain can be seen in Figure C22.4