1983
DOI: 10.1111/j.1460-2695.1983.tb00329.x
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A Method of Creep Damage Summation Based on Accumulated Strain for the Assessment of Creep‐fatigue Endurance

Abstract: A method of combining long term creep data with relatively short term mechanical behaviour to provide an estimate of creepfatigue endurance is presented. It is proposed that the creepfatigue effect in high temperature cyclic deformation is governed by a difference in strain rate around the cycle and the associated variation in ductility with strain rate. NOMENCLATUREi,, ED and E, A , B, a and b monotonic strain to failure monotonic time to failure strain rate maximum and minimum strain to failure minimum creep… Show more

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Cited by 90 publications
(29 citation statements)
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“…The R5 ductility exhaustion approach in which the ductility is a function of the creep strain rate is based on considerations of cavity growth mechanisms [11]. However, it ignores the effects of cavity nucleation on creep ductility.…”
Section: Stress Modified Ductility Exhaustionmentioning
confidence: 99%
See 1 more Smart Citation
“…The R5 ductility exhaustion approach in which the ductility is a function of the creep strain rate is based on considerations of cavity growth mechanisms [11]. However, it ignores the effects of cavity nucleation on creep ductility.…”
Section: Stress Modified Ductility Exhaustionmentioning
confidence: 99%
“…An initial description of the 'material specific' creep ductility of Type 347 weld metal as a function for 3 f ð_ 3 c Þ has been constructed by following a similar approach to that described by Hales [11] and is shown in Fig. 2.…”
Section: R5 Ductility Exhaustionmentioning
confidence: 99%
“…In this paper L is used in the sense of damage fraction. Instead of time fraction a strain fraction rule was introduced [20]. In order to calculate damage, the stress strain path is normally taken from the stabilized cycle at half life [21].…”
Section: Creep Fatigue Interaction Life Assessmentmentioning
confidence: 99%
“…The ductility exhaustion method proposed by Priest and Ellison (1981) and Hales (1983) is a well-known method to evaluate creep damage under creep-fatigue loading (Ainsworth, 2006;Yan et al, 2015). This method assumes that creep damage develops with the accumulation of creep or inelastic strain under strain holding.…”
Section: Introductionmentioning
confidence: 99%
“…This method assumes that creep damage develops with the accumulation of creep or inelastic strain under strain holding. Priest and Ellison (1981) proposed that creep damage develops when the inelastic strain-rate under strain holding is smaller than the transition rate below which the diffusion creep and grain boundary sliding become important, whereas Hales (1983) considered that the development of creep damage depends on the variations in inelastic strain in three periods under strain holding. Takahashi (1998) and Takahashi et al (2008) adopted the Priest and Ellison (1981) model and decomposed the inelastic strain-rate under strain holding into viscoplastic and creep components occurring at high and low inelastic-strain rates, respectively, and assumed that only the creep component contributes to the development of creep damage.…”
Section: Introductionmentioning
confidence: 99%