Journal ArticleDOI
Low and High Cycle Fatigue Interaction in 316L Stainless Steel
Y.K. Wong,Xiao Hu,M.P. Norton +2 more
TLDR
In this paper, the interaction between initial low cycle fatigue and high cycle fatigue in 316L stainless steel is reported, and it is concluded that initial LCF causes substantial irreversible damage, subsequently reducing fatigue life in the HCF regime.Abstract:
The interaction between initial low cycle fatigue (LCF) and high cycle fatigue (HCF) in 316L stainless steel is reported. Specimens were introduced to varying degrees of LCF and subsequently subjected to HCF until failure. LCF involves bulk plasticity where stress levels are usually above the yield strength of the material. On the other hand, HCF is predominantly elastic, and stress levels are below the yield strength of the material. Fatigue was carried out under strain control where two strain amplitudes in the LCF range with a common HCF strain amplitude were investigated. Results show that fatigue life decreased when specimens were introduced to increasing numbers of initial LCF. A linear life trend is observed for high numbers of LCF introduction, which deviates from linearity when lower numbers of LCF were introduced. It is therefore concluded that initial LCF causes substantial irreversible damage, subsequently reducing fatigue life in the HCF regime.read more
Citations
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Journal ArticleDOI
Investigation of fracture mechanisms and substructural changes under sequential fatigue cycling involving LCF and HCF loads in a type 316LN stainless steel at 923 K
TL;DR: In this paper, the cumulative fatigue damage under sequential low cycle fatigue and high cycle fatigue loading was investigated at 923 K by conducting HCF tests on specimens subjected to prior LCF cycling at various strain amplitudes.
Journal ArticleDOI
Plastically elastically dominant fatigue interaction in 316L stainless steel and 6061‐T6 aluminium alloy
Y.K. Wong,Xiao Hu,M.P. Norton +2 more
TL;DR: In this article, the interaction between plastically dominant fatigue and elastic dominant fatigue (EDF) in 316L stainless steel and 6061-T6 aluminium alloy was investigated.
Journal ArticleDOI
Damage due to low-cycle fatigue of type 316 stainless steel. Fatigue life under variable loading and influence of internal cracks
Journal ArticleDOI
Implications of dynamic strain aging under LCF-HCF interactions in a type 316LN stainless steel
TL;DR: In this paper, the influence of dynamic strain aging (DSA) under sequential low cycle fatigue (LCF) and high cycle fatigue loading was investigated by conducting HCF tests on specimens subjected to prior LCF cycling over a wide range of temperature from 573 to 973 K. DSA was found to be pronounced at 823-873 K depending on the magnitude of the stress employed under HCF cycling.
Lessons Learned to Improve HCF Demonstration Tests
TL;DR: In this paper, structural characterization tests of turbine engine components are conducted in an altitude test chamber with a heavily instrumented engine where a limited number of altitude/Mach number test conditions are simulated to characterize component vibratory stresses.
References
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Book
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Journal ArticleDOI
Cyclic stress-strain response of F.C.C. metals and alloys—I Phenomenological experiments
C.E Feltner,C Laird +1 more
TL;DR: Hardening and softening produced by cyclic strain in annealed and cold-worked polycrystalline f.c. metals and alloys has been studied in the range of cyclic strains giving lives of less than 104 cycles to failure.
Journal ArticleDOI
Cyclic stress-strain response of F.C.C. metals and alloys—II Dislocation structures and mechanisms
C.E Feltner,C Laird +1 more
TL;DR: In this article, the effects of slip character, prior history, temperature and amplitude on the cyclic strain hardening and softening curves of copper and Cu-7.5% Al have been investigated by transmission electron microscopy.
Journal ArticleDOI
Re-examination of cumulative fatigue damage analysis—an engineering perspective
S.S. Manson,G.R. Halford +1 more
TL;DR: In this article, the authors re-examined the Double Linear Damage Rule (DLDR) approach with the intent of improving its accuracy and simplicity of application to engineering problems.
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