Fatigue testing is a procedure wherein a relationship between a material’s stress range and the number of times it can be applied before failure is established. In this test, the testing machine is used to apply a specific amount of force in a material for multiple cycles. The force can be applied in the form of tension, compression, torsion, and bending forces, among others. A combination of these forces can also be applied to simulate real-world forces that can lead to material fatigue.