Results 111 to 120 of about 229 (133)

A New Ductility Exhaustion Model for High Temperature Low Cycle Fatigue Life Prediction of Turbine Disk Alloys

open access: yesInternational Journal of Turbo and Jet Engines, 2011
Based on ductility exhaustion theory and the generalized energy-based damage parameter, a new viscosity-based life prediction model is introduced to account for the mean strain/stress effects in the low cycle fatigue regime. The loading waveform parameters and cyclic hardening effects are also incorporated within this model.
Shun-Peng Zhu   +2 more
exaly   +8 more sources

A fatigue damage accumulation model based on continuum damage mechanics and ductility exhaustion

open access: yesInternational Journal of Fatigue, 1998
Using continuum damage mechanics, a fatigue damage accumulation model related to ductility exhaustion has been developed. This model was applied to study fatigue damage evolution in a pressure vessel steel and two-level cyclic tests have been carried out to verify the damage accumulation model. The experimental results showed that a damage variable, D,
G Cheng
exaly   +3 more sources

Ductility Exhaustion Model for Prediction of Thermal Fatigue and Creep Interaction

open access: yes, 1973
Extensive laboratory testing of typical alloys used in gas turbine blading has shown that there is a strong interaction of the thermal fatigue and creep damage modes which is nonlinear in nature. Consequently, a model for cumulative damage analysis was developed using an exhaustion of ductility concept in which the total available ductility is derived ...
JF Polhemus, CE Spaeth, WH Vogel
exaly   +3 more sources
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Embrittlement of SiMo Ductile Cast Iron Exhaust Manifold and Evaluation using Sehitoglu Damage Model

SAE Technical Paper Series, 2022
<div class="section abstract"><div class="htmlview paragraph">Sehitoglu damage model is often applied to evaluate thermomechanical fatigue (TMF) performance of the components in the environment of high temperature in finite element analysis (FEA). SiMo ductile cast irons have been widely used for exhaust manifolds in propulsion systems. The
Yi Liu   +6 more
openaire   +1 more source

Evaluation of Monkman–Grant strain as a key parameter in ductility exhaustion damage model to predict creep rupture of grade 92 steel

The Journal of Strain Analysis for Engineering Design, 2021
Conventional strain-based numerical prediction assumes that failure occurs when ductility is exhausted or accumulation of creep strain reaches the critical failure strain. Due to instability at the onset of rupture, the failure strain value appears to be scattered and leads to the erroneousness in prediction. In this paper, a new local constraint-based
Nasrul Azuan Alang   +2 more
openaire   +1 more source

A unified multiscale ductility exhaustion based approach to predict uniaxial, multiaxial creep rupture and crack growth [PDF]

open access: yesEngineering Fracture Mechanics, 2017
Numerical and analytical methods for predicting uniaxial damage have largely depended on the constituent components of the stress/strain measured data which have inherent scatter. Models developed for this purpose have also attempted, with some degree of
Kamran Nikbin
exaly   +2 more sources

Evaluation of Monkman–Grant strain as a key parameter in ductility exhaustion damage model to predict creep rupture of grade 92 steel

Journal of Strain Analysis for Engineering Design, 2022
Nasrul Azuan Alang   +2 more
exaly  

A comparison between two parameter and ductility exhaustion approaches for creep life assessment

Theoretical and Applied Fracture Mechanics, 2020
G Z Wang, Shan-Tung Tu, F Z Xuan
exaly  

The exhaustion of creep ductility in 1CrMoV steel

International Journal of Pressure Vessels and Piping, 2010
S R Holdsworth, E Mazza
exaly  

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