Tensile test is one of the most important mechanical property evaluation test. In this test a cylindrical or a plate shaped specimen is deformed by applying a uniaxial force as shown in the figure below. One end of the sample is fixed in a static grip while the other end of the specimen is pulled at a constant velocity. The load is continuously monitored during the test. It is usual to conduct this test until the sample fractures. During the test, the instantaneous elongation of the sample can be calculated from the velocity of deformation or can also be measured by using an extensometer.