Accounting for crack closure effects in out-of-phase TMF crack growth with extended hold times

The crack growth behaviour of the alloy CM 247 LC is investigated for out-of-phase TMF and isothermal tests at same temperature as minimum in tests. results suggest that it possible to characterise if experimental corrections closure are accounted for. replication these using a numerical FE-solver similar behaviour, suggesting main mechanism place plasticity-induced closure. A pragmatic analytical model including hold time effects proposed. comparison response from this with suggests proposed capable approximate cases where substantial creep deformation be expected.