Accounting for anisotropic, anisothermal, and inelastic effects in crack initiation lifing of additively manufactured components

Lindström, Thomas, 1991- (author): Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten

Simonsson, Kjell, Professor, 1964- (author): Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten

Eriksson, Robert, 1982- (author): Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten

Leidermark, Daniel, 1980- (author): Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten

(creator_code:org_t)

2022-11-06
2023
English.
In: Fatigue & Fracture of Engineering Materials & Structures. - : Wiley. - 8756-758X .- 1460-2695. ; 46:2, s. 396-415

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Abstract Subject headings

The crack initiation life of a ductile additively manufactured nickel-based superalloy is studied and modeled for low-cycle fatigue and thermomechanical fatigue conditions up to 600 degrees C. Isothermal experiments were performed on smooth specimens at temperatures up to 600 degrees C with different applied strain ranges. Additionally, thermomechanical fatigue experiments at 100-450 degrees C and 100-600 degrees C were performed on smooth specimens under in-phase and out-of-phase conditions. A life prediction model accounting for the anisotropy was developed, where the temperature cycle is accounted with a Delta T$$ \Delta T $$-functionality, generating good agreements with the experiments. The model was also validated on notched specimens undergoing thermomechanical fatigue conditions at 100-500 degrees C using simplified notch correction methods.

By the author/editor: Lindström, Thoma ...; Nilsson, Daniel; Simonsson, Kjell ...; Eriksson, Robert ...; Lundgren, Jan-Er ...; Leidermark, Dani ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Applied Mechanic ...

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