We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.
danielshaw
Ansys Employee

Kf is just a general modification factor (always equal to or less than 1.0) used to reduce the fatigue resistance.  For example, the test specimens used to develop the S-N curve are typically polished, but the actual material might have a rough surface finish.  Kf can be used include the surface finish effect.