Experimental study of fatigue crack growth in raw and annealed pure copper with considering cyclic plastic effects

Seifi, Rahman; Hosseini, Reza

doi:10.1016/j.tafmec.2017.12.003

Cited by 12 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The slope of the linear fitting, providing the Paris law exponent m as shown in Eq. 3, was found to be 1.65±0.25, which agrees well with the lower bound of literature value of 2 to 4 for pure copper [31]. This suggests that a large joint defect, which leads to a higher SIF range ΔK, will result in a higher fatigue crack growth rate, hence shorten the fatigue life exponentially.…”

Section: Failure Modesupporting

confidence: 88%

“…where C, C2, m, Δσ and π are all constants, thus the initial fatigue crack growth rate can be simplified as a function of the initial defect area A. According to literature, in the linear elastic fracture mechanics (LEFM) regime, the exponent m is in the range of 3 to 5 for steels [30] and 2 to 4 for pure copper [31]. However, the initial crack size (Fig.…”

Section: Failure Modementioning

confidence: 99%

See 1 more Smart Citation

Characterisation of microstructure, defect and high-cycle-fatigue behaviour in a stainless steel joint processed by brazing

Zhang

Parfitt

et al. 2019

Materials Characterization

View full text Add to dashboard Cite

Section: Failure Modesupporting

confidence: 88%

Section: Failure Modementioning

confidence: 99%

Characterisation of microstructure, defect and high-cycle-fatigue behaviour in a stainless steel joint processed by brazing

Zhang

Parfitt

et al. 2019

Materials Characterization

View full text Add to dashboard Cite

“…Brünig et al 10 studied the stress–strain effect on the fracture mode of an aluminum alloy, and established an anisotropic fracture model for ductile metals. Seifi and Hosseini 11 studied crack growth in copper under cyclic loading, and the simulated results were consistent with the experimental ones. Bjurenstedt et al 12 conducted a tensile test to evaluate the role of Fe-rich intermetallics on the crack initiation in Al–Si alloys.…”

Section: Instructionsupporting

confidence: 69%

Layered fracture prediction of QStE700 medium-thickness steel plate under tensile loading

Zhu

Ping

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

Layered fracture frequently occurs in the deforming process of QStE700 medium-thickness steel plates under tensile loading. In this study, the morphology of a layered fracture was observed via scanning electron microscopy, and the mechanism of the layered fracture was also analyzed. Based on the three-dimensional digital image correlation technique, a section analysis method was adopted for determining the true stress–strain curve including the necking process. A modified Bridgeman’s equation was adopted to transform the true stress–strain curve into the equivalent stress–strain curve. At the time of layered fracture occurrence, the equivalent strain and stress triaxiality of differently shaped specimens were obtained and fitted to a linear exponential relationship equation. The equation was the layered fracture criterion function and combined with the finite element method (FEM) simulations for determining the damage criterion of the layered fracture of a certain specimen. The FEM-simulated equivalent strain was consistent with the experimental equivalent strain of the layered fracture. Summarizing, the proposed method to predict the layered fracture of a QStE700 medium-thickness steel plate is effective and can be adopted in the study and control of layered fracture.

show abstract

“…For obtaining a preliminary estimate of the CIKH components from the stabilized hysteresis loop (Figure A) in the suggested methodology, the following equations are used:

σ_{y}^{IH} = \frac{σ^{\max} - σ_{e}^{\min}}{2},

α = \frac{σ^{\max} + σ_{e}^{\min}}{2},

where

σ_{y}^{IH}

is stabilized yield stress due to IH, α is backstress due to KH, σ max is the peak stress in tension to compression half cycle,

σ_{e}^{\min}

is yield stress during load reversal for the half cycle. Similar method to estimate the IH and KH components have been used by earlier investigators too …”

Section: Summary Of the Suggested Methodologymentioning

confidence: 98%

Prediction of asymmetric cyclic‐plastic behaviour for cyclically stable non‐ferrous materials

Nath

Barai

Ray

2019

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Investigation on asymmetric cyclic‐plastic or ratcheting behaviour of non‐ferrous materials has received relatively little attention compared with ferrous materials. Ratcheting behaviour of materials is generally simulated using isotropic‐kinematic hardening models; however, for materials showing cyclically stable response, isotropic hardening is often not accounted for the constitutive modelling. A methodology based on Chaboche's isotropic‐kinematic hardening (CIKH) model with the consideration of genetic algorithm for optimization of initial estimates of the CIKH parameters is used in this study. The investigated plastic responses incorporate both symmetric strain‐controlled hysteresis loops and ratcheting behaviour. The suggested approach satisfactorily predicts the reported plastic response of cyclically stable non‐ferrous alloys based on aluminum, zirconium, and titanium.

show abstract

Experimental study of fatigue crack growth in raw and annealed pure copper with considering cyclic plastic effects

Cited by 12 publications

References 17 publications

Characterisation of microstructure, defect and high-cycle-fatigue behaviour in a stainless steel joint processed by brazing

Characterisation of microstructure, defect and high-cycle-fatigue behaviour in a stainless steel joint processed by brazing

Layered fracture prediction of QStE700 medium-thickness steel plate under tensile loading

Prediction of asymmetric cyclic‐plastic behaviour for cyclically stable non‐ferrous materials

Contact Info

Product

Resources

About