How to find K-threshold, C and m values (da/dN = CΔK^m) of a specimen subjected to Fatigue crack growth rate (FCGR) test (ASTM E-647) ?

i have tested a specimen according to ASTM E-647 for FCGR test (Paris Erdogan law) i have its data points in excel sheet, i have also plotted the da/dN vs ΔK graph (log-log plot). but now i am...

22 January 2023 1,682 3 View