Fractographic observations were performed to determine fatigue crack growth increments corresponding to the most severe flights of the miniTWIST flight simulation. Specimens were tested under two miniTWIST load histories and three special load sequences based on the most severe flights of the miniTWIST. Bands caused by the severe flights could be distinguished on the fracture surface and an accurate reconstitution of the crack growth curve could be made. Crack increments occurring in the most severe flights were measured and compared with values predicted by the modified CORPUS model. Observations on accelerations and retardations are presented.
Fractographic Observations on Fatigue Crack Growth under MiniTWIST Flight-Simulation Loading (2024-T3 Material)
1990
64 pages
Report
No indication
English