The derivation of creep-fatigue maps can represent an useful application of multistage life prediction models. Computations directly provide, in suitable two-dimensional diagrams, the demarcation lines among zones where survival, rupture by static or cyclic creep, fatigue, and creep-fatigue interaction prevail. Moreover, inside some of the mentioned zones, lines can be defined for constant amounts of fatigue damage, or of creep life and/or fatigue cycles. The maps here discussed are based on load parameters and are usually drawn as a function of the frequency of the applied load. Both the mean applied load and the amplitude of the oscillation have been used as fundamental variables. The reported maps, beside offering a general overview of the material behaviour, provide an useful tool for increasing the agreement of the model with the experimental data in a very large range of load conditions.

Creep-fatigue maps from multistage life prediction methods / Aldo Del Puglia, Franco Pratesi, Giovanni Zonfrillo. - STAMPA. - (1989), pp. 171-176. ((Intervento presentato al convegno Fatigue & Stress of Engineering Materials and Components tenutosi a Bologna nel 18-19 settembre 1989.

Creep-fatigue maps from multistage life prediction methods

Aldo Del Puglia;Franco Pratesi;Giovanni Zonfrillo
1989

Abstract

The derivation of creep-fatigue maps can represent an useful application of multistage life prediction models. Computations directly provide, in suitable two-dimensional diagrams, the demarcation lines among zones where survival, rupture by static or cyclic creep, fatigue, and creep-fatigue interaction prevail. Moreover, inside some of the mentioned zones, lines can be defined for constant amounts of fatigue damage, or of creep life and/or fatigue cycles. The maps here discussed are based on load parameters and are usually drawn as a function of the frequency of the applied load. Both the mean applied load and the amplitude of the oscillation have been used as fundamental variables. The reported maps, beside offering a general overview of the material behaviour, provide an useful tool for increasing the agreement of the model with the experimental data in a very large range of load conditions.
Metal behaviour & surface engineering
Fatigue & Stress of Engineering Materials and Components
Bologna
18-19 settembre 1989
Aldo Del Puglia, Franco Pratesi, Giovanni Zonfrillo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/1285790
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