Understanding strain controlled low cycle fatigue response of P91 steel through experiment and cyclic plasticity modeling

Das, Bimal; Singh, Akhilendra

doi:10.1016/j.fusengdes.2018.11.007

Cited by 36 publications

(13 citation statements)

References 45 publications

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“…In this section, the effect of ratcheting fatigue damage or pre-ratcheting at various life fractions on tensile properties are studied and discussed elaborately. Various authors 20,32,33 have quantified damage by evaluating the tensile properties of prior LCF specimens and found that tensile properties are significantly affected by pre-fatigue loaded specimens. Ratcheting test of both as-received and artificially aged aluminium alloy for a similar fraction of loadings are interrupted at 10%, 20%, 30% and 50% of ratcheting fatigue life and thereafter uniaxial tensile tests are performed on those specimens.…”

Section: Resultsmentioning

confidence: 99%

Effect of ratcheting fatigue damage on the evolution of tensile properties of Al–Mg alloy

Kumar

Das

Singh

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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This work aims to investigate the effect of damage accumulation on the evolution of tensile properties due to prior ratcheting fatigue in as-received and artificially aged conditions of Al–Mg alloy (AA 5754). Uniaxial asymmetric stress controlled tests for various combinations of mean stress and stress amplitude are performed at room temperature. Progressive degradation in the mechanical properties of structures and machines subjected to cyclic loading during service period can affect the structural integrity. In view of this, ratcheting fatigue tests are interrupted at various life fractions for particular mean stress and stress amplitude followed by tensile tests to understand the damage evolution during ratcheting for both conditions of alloy. Also, the effect of mean stress and stress amplitude on the post ratcheting tensile behaviour is analysed by conducting the ratcheting tests up to 150 cycles. Cyclic hardening is exhibited in the initial cycles followed by saturation for both as-received and artificially aged alloy. Ratcheting strain increases with the increase in both mean stress and stress amplitude. Drastic changes in tensile properties are noticed with ratcheting fatigue damage evolution for both conditions of alloy. The evolution of tensile properties due to prior loading history such as ratcheting fatigue can provide fundamental understanding in the design of structural components.

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Section: Resultsmentioning

confidence: 99%

Effect of ratcheting fatigue damage on the evolution of tensile properties of Al–Mg alloy

Kumar

Das

Singh

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The constitutive equations describing cyclic plasticity behaviour of materials under plastic cyclic loading assume isotropic and rate-independent formulation. 21,22 The whole formulation is governed by yield criteria, plastic flow rule and hardening rule.…”

Section: Cyclic Plasticity Modellingmentioning

confidence: 99%

“…In the literature, researchers have shown the capability of Chaboche kinematic hardening model in predicting the low cycle fatigue hysteresis loop for a wide range of structural steels. [22][23][24] Chaboche et al superimposed three Armstrong-Frederick (A-F)-type hardening rule to dictate the evolution of backstress components.…”

Section: Cyclic Plasticity Modellingmentioning

confidence: 99%

“…The prediction of fatigue damage and the life of engineering components requires the assessment of cyclic plasticity responses at critical locations. The constitutive equations describing cyclic plasticity behaviour of materials under plastic cyclic loading assume isotropic and rate‐independent formulation 21,22 . The whole formulation is governed by yield criteria, plastic flow rule and hardening rule.…”

Section: Fe Analysis Of Bend Fatiguementioning

confidence: 99%

“…Kinematic hardening model captures the asymmetry in yielding during tension‐compression loading by translating the yield surface in the stress space by an amount | α |, that is, backstress. In the literature, researchers have shown the capability of Chaboche kinematic hardening model in predicting the low cycle fatigue hysteresis loop for a wide range of structural steels 22–24 . Chaboche et al superimposed three Armstrong‐Frederick (A‐F)–type hardening rule to dictate the evolution of backstress components.…”

Section: Fe Analysis Of Bend Fatiguementioning

confidence: 99%

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Correlation between fatigue response of preformed bend DP600 steel specimen and wheel disc

Das

Singh

Paul

et al. 2020

Fatigue Fract Eng Mat Struct

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The present aim of this paper is to predict the cornering fatigue life of a wheel disc through a preformed bend DP600 steel specimen. To accomplish this objective, a newly designed preformed specimen with a bend radius equivalent to the weakest section of the wheel disc is fabricated by stamping operation followed by load-controlled high-cycle fatigue tests. Finite element (FE) simulation of stamping operation shows that an equivalent strain of 13% is induced to the bend specimen. Preformed bend specimen exhibits less fatigue resistance than the prestrained straight specimen for the same equivalent prestrain. A combined state of loading induces multiaxial stress state, giving rise to asymmetry of stresses along the thickness at the bend root of the DP600 steel specimen. Distribution of equivalent plastic strain and stress triaxiality from FE simulation indicates that fatigue crack occurs at the centre of the inner fibre of the bend root.

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Low Cycle Fatigue and Damage Evaluation on 16MnCr5 Alloy Steel

González‐Zapatero,

García,

Gómora

et al. 2024

steel research int.

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The 16MnCr5 alloy steel samples are evaluated in a normalized condition and put through low cycle fatigue (LCF) under constant amplitude strains of εa = 0.2%, 0.25%, 0.4%, and 0.6%. Mechanical properties are reported based on the LCF results. Fatigue damage is checked in specimens that have reached 80% of their nominal fatigue life by two methods that are different from traditional electronic microscopy: measuring the roughness of the surface and looking at it through full‐field optical microscopy. In addition, the electric resistivity is determined for the test specimens. It presents an increment from the blank value of 6.5 × 10−8 Ωm (free of fatigue damage) to 1.25 × 10−7 Ωm for the fatigue test specimen (εa = 0.6%). Finally, X‐ray diffraction patterns are determined for analyzing the residual equivalent strain at the microscale for the fatigued samples. The residual equivalent strain exhibits a trend toward increasing. For instance, it increases from 18.5 (blank value) to 34.0 με for the fatigue test specimen with εa = 0.6%.

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Understanding strain controlled low cycle fatigue response of P91 steel through experiment and cyclic plasticity modeling

Cited by 36 publications

References 45 publications

Effect of ratcheting fatigue damage on the evolution of tensile properties of Al–Mg alloy

Effect of ratcheting fatigue damage on the evolution of tensile properties of Al–Mg alloy

Correlation between fatigue response of preformed bend DP600 steel specimen and wheel disc

Low Cycle Fatigue and Damage Evaluation on 16MnCr5 Alloy Steel

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