The effect of dwell times and minimum temperature on out-of-phase thermomechanical fatigue crack propagation in a steam turbine steel - Crack closure prediction

Azeez, Ahmed, 1991- (author): Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten

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

Norman, Viktor, 1988- (author): Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten

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

Moverare, Johan, Professor, 1973- (author): Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten

(creator_code:org_t)

Elsevier Science Ltd, 2022
2022
English.
In: International Journal of Fatigue. - : Elsevier Science Ltd. - 0142-1123 .- 1879-3452. ; 162

Related links:: https://doi.org/10.1...; show more...; https://liu.diva-por... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

Exploring crack growth behaviour is needed to establish accurate fatigue life predictions. Cracked specimens were tested under strain-controlled out-of-phase thermomechanical fatigue conditions. The tests included dwell times and three different minimum temperatures. Higher minimum temperature gave faster crack growth rates while the additions of dwell times showed no effects. Crack closure was observed in all the tests where the addition of dwell times and change in minimum temperature displayed little to no effect on crack closure stresses. Finite element models with a sharp stationary crack and material parameters switching provided acceptable predictions for the maximum, minimum, and crack closure stresses.

By the author/editor: Azeez, Ahmed, 19 ...; Eriksson, Robert ...; Norman, Viktor, ...; Leidermark, Dani ...; Moverare, Johan, ...

About the subject

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

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