Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch

Corroded surfaces of offshore mooring chains typically show a very irregular shape with different pit geometries. Fatigue tests were performed in three‐point bending on specimens with hemispherical notches, representing an idealized geometry of a corrosion pit. Digital image correlation was used to...

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Veröffentlicht in:	Fatigue & fracture of engineering materials & structures 2022-12, Vol.45 (12), p.3592-3608
Hauptverfasser:	Qvale, Paul, Zarandi, Ershad P., Arredondo, Alberto, Ås, Sigmund K., Skallerud, Bjørn H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bending fatigue Chains Crack initiation Crack propagation cyclic softening digital image correlation Digital imaging Docking and mooring gear fatigue crack initiation Fatigue failure Fatigue tests finite element Fracture mechanics Machining mean stress relaxation Notches offshore engineering Residual stress Softening Strain Stress relaxation Yield stress
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