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ON LIFE TIME PREDICTIONS WITH THE STRAIN RANGE PARTITIONING METHOD
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1983
Year
EngineeringLife PredictionMechanical EngineeringDeterioration ModelingStructural MaterialsReliability EngineeringMechanicsNumerical SimulationStressstrain AnalysisBiostatisticsStrain RangeInteraction Damage RuleLinear Damage RuleService Life PredictionMaterials ScienceStrain LocalizationLow-cycle FatigueHigh Temperature MaterialsSuperalloyCivil EngineeringDamage EvolutionMechanics Of MaterialsMultiscale Modeling
Abstract— Computer optimization techniques were applied to the strain range partitioning method for lifetime prediction under high temperature low cycle fatigue loading. The experimental data were evaluated using a simultaneous parameter fit determination of the baseline coefficients. This approach gave good predictions whereas a more conventional method did not work. The significance of the linear damage rule and the interaction damage rule is discussed on the basis of a generalised rule containing both as special cases. This formalism was applied to a ferritic steel and a cast nickelbase‐super‐alloy. In both cases a very good agreement between calculated and measured lifetimes was found.