Required Material Properties

All the eN fatigue properties are required input. In addition to the eN properties, $C$ and $\gamma$ in Figure 7 also have to be input. At least two pairs of $C$ - $\gamma$ have to be input to make at least two slopes in Figure 8. In Figure 7, $C$ and $\gamma$ are a function of the elementary material block size $\rho *$ . Once $\rho *$ is available, $C$ - $\gamma$ pairs can be calculated using Figure 7 together with eN properties. There are three methods to estimate $\rho *$ .