Creep sagging analysis of pressure pipes II: Damage accumulation under variable temperature and pressure conditions

Pavlou, Dimitrios G.; Vlachakis, N.V.; Mavrothanasis, F. I.; Avlonitis, S.; Pavlou, M.G.; Vlachakis, V.

doi:10.1016/j.commatsci.2006.11.007

Cited by 1 publication

(1 citation statement)

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“…Pavlou 16,17 pioneered the theory of the S-N fatigue damage envelope based on the isodamage concept. Subsequently, based on this theory, Pavlou and other researchers [18][19][20][21][22] proposed nonlinear life prediction models and successfully applied them under stepwise constant amplitude loading, variable pressure, and/or temperature conditions. For Miner's rule, without considering the loading sequence effect, with the aid of probabilistic methods, 23,24 the linear rule obtains acceptable predictions under random loading.…”

Section: Introductionmentioning

confidence: 99%

A Miner's rule based fatigue life prediction model for combined high and low cycle fatigue considering loading interaction effect

Wang,

Hou,

Guo

et al. 2023

Fatigue Fract Eng Mat Struct

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The key components in service, such as aero‐engine turbine blades, are generally bearing complex interactions of high and low cycle fatigue loading. It is essential to make accurate fatigue life predictions for these components. In this paper, based on experimental analysis and the Miner's rule, a combined cycle fatigue life prediction model is proposed. The effect of the loading interaction of the high and low cycle fatigue is considered through the coupled damage, which is proposed based on the investigation of the fatigue test results and does not require additional material constants except for the S‐N curve parameters. The applicability of the proposed model is validated by the experimental data of three materials and the turbine blade. Compared with the T‐K model and Miner's rule, the results demonstrate that the proposed model provides high precision accuracy.

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