Question

Which parameter of the notch geometry is most important factor influencing the notch impact values?

Answer 1

Parameters of notch geometry that influence notch impact values:

The fatigue effective stress is determined by the "fatigue notch factor" and it is nothing but the overall ratio between the endurance limit at un-notched stage to that of its corresponding notched limit.

These are also sometimes referred to as the endurance limit and the nominal stress amplitude respectively.

The elastic notch also signifies the level of stress.

This factor actually depends on the absolute notch acuity and the relative acuity.

It also depends on how far one applies load or what kind of material is being used.