Generalized definition of “crack-like” notches to finite life and SN curve transition from “crack-like” to “blunt notch” behavior
Available online 29 April 2017
critical distance method
A simple finding on variable amplitude (Gassner) fatigue SN curves obtained using Miner’s rule for unnotched or notched specimen
We provide a very simple result for a problem which has been often neglected (variable amplitude loading) in academia, but which is of paramount importance in real engineering situations, where fatigue is almost never "constant amplitude".
We found few cases where we could check this extremely simple result, but it worked very well. We would welcome further verifications.
The paper is in press here.