An approach to life prediction for a nickel-base superalloy under isothermal and thermo-mechanical loading conditions
Source abstract
Abstract
Abstract Scope of the present work is the development of a unified approach for the life prediction under isothermal and thermo-mechanical loading conditions. The basis for the life prediction is the stress–strain response of the material for one selected cycle obtained in the context of a Finite Element Analysis. Here the application of an appropriate inelastic constitutive model is essential. A phenomenological fatigue model is proposed which is able to describe mean-stress effects, as well as dependencies on hold time and cycle duration with reasonable accuracy. The model performance is compared with that of a mechanism based literature model. The model accuracy is evaluated on a statistical basis through an evaluation of the variance in the ratio between predicted life and actual life.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Temperature Alloys and Creep · Fatigue and fracture mechanics · Probabilistic and Robust Engineering Design
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References (20)
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