Other Methods for Fitting a Curve
The following methods require certain parameters other than UTS to define the SN/EN curve.
SN Properties
![](../../images/fatigue/fit_curve_point1_plot.png)
Figure 1. Point, 1-seg
![](../../images/fatigue/fit_curve_point1_params.png)
Figure 2.
![](../../images/fatigue/fit_curve_point2_plot.png)
Figure 3. Point, 2-seg
![](../../images/fatigue/fit_curve_point2_params.png)
Figure 4.
![](../../images/fatigue/fit_curve_intercept1_plot.png)
Figure 5. Slope-intcept, 1-seg
![](../../images/fatigue/fit_curve_intercept1_params.png)
![](../../images/fatigue/fit_curve_intercept2_plot.png)
Figure 7. Slope-intcept, 2-seg
![](../../images/fatigue/fit_curve_intercept2_params.png)
Figure 8.
![](../../images/fatigue/fit_curve_trans1_plot.png)
Figure 9. Slope-trans, 1-seg
![](../../images/fatigue/fit_curve_trans1_params.png)
Figure 10.
![](../../images/fatigue/fit_curve_trans2_plot.png)
Figure 11. Slope-trans, 2-seg
![](../../images/fatigue/fit_curve_trans2_params.png)
Figure 12.
SN Properties in XY Format
![](../../images/fatigue/xy_data_sn_curve.png)
Figure 13. XY Data SN Curve
![](../../images/fatigue/format_sn_curve_in_xy_data.png)
Figure 14. Format of SN Curve in XY Data
Single Haigh Diagram
![](../../images/fatigue/single_haigh_diagram.png)
Figure 15. Single Haigh Diagram
![](../../images/fatigue/format_of_haight_diagram.png)
Figure 16. Format of Haigh Diagram CSV
EN Properties
![](../../images/fatigue/fit_curve_slope_plot.png)
Figure 17. Slope
![](../../images/fatigue/fit_curve_slope_params.png)
Figure 18.