Probabilistic analysis for the functional and structural fatigue of NiTi wires

Zhang, Xiaoyong; Wang, Shixun; Yue, Dingyang; Sun, Ruijie; Zhou, Xu

doi:10.1016/j.matdes.2016.04.044

Cited by 23 publications

(12 citation statements)

References 46 publications

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“…This finding is similar to the results reported in Refs. [9,21,31,34], which illustrates the reliability model is reasonable. (2) The creep-fatigue lifetimes N 0.90 , N 0.99 , and N 0.9987 at R¼ 90%, 99%, and 99.87% were also calculated.…”

Section: Probabilistic Creep-fatigue Lifetime Assessmentmentioning

confidence: 74%

Creep-fatigue behavior of turbine disc of superalloy GH720Li at 650 °C and probabilistic creep-fatigue modeling

Shang

et al. 2016

Materials Science and Engineering: A

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Section: Probabilistic Creep-fatigue Lifetime Assessmentmentioning

confidence: 74%

Creep-fatigue behavior of turbine disc of superalloy GH720Li at 650 °C and probabilistic creep-fatigue modeling

Shang

et al. 2016

Materials Science and Engineering: A

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“…In materials science and engineering, the most commonly implemented probability distributions are the normal distribution [24], Weibull distribution [25], Poison distribution [26], gamma distribution [27], log-normal distribution [28], exponential distribution [17], Gumbel distribution [29,30], and GEV distribution [31]. The frequency distribution of the layer thickness parameter is presented in a discrete mode.…”

Section: Mathematical Foundationmentioning

confidence: 99%

A Stochastic Model and Investigation into the Probability Distribution of the Thickness of Boride Layers Formed on Low-Carbon Steel

et al. 2019

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The stochastic nature of the thickness of boride layers formed on carbon steel is described in this paper. Additionally, the probability distribution of the layer thickness is studied to determine the best-fit probability distribution. The study combines the use of an empirical model (power-law) and the Markov chain principles, with the purpose of demonstrating that it is feasible to develop a model that represents the non-uniformity of the thickness of boride layers that form on carbon steel. The results indicate that the mean and variance tend to increase when the time or temperature is increased. The findings of this paper demonstrate that an analytical solution to the Kolmogorov’s system differential equation can adequately represent the behavior of non-uniform boride layer formed on low-carbon steel, regardless of the temperature or duration of treatment.

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“…Several works related to the fatigue of NiTi SMA under different test conditions can be found, such as: life in torsional fatigue in rotary endodontic instruments from various manufacturers, and the influence of design and surface finish [8,9]; influence of heat treatments on thermomechanical fatigue [10]; cyclical behavior at different frequencies and amplitudes under controlled strain [11]; superelastic fatigue under controlled stress for different stress ratios (R = r min /r max ) [12]; behavior of NiTi wires of different diameters under tensile stress for civil engineering applications [13]; influence of loading frequency on dynamic stress tests in NiTi superelastic bars [14]; fatigue properties of a pseudoelastic NiTi alloy (strain ratcheting and hysteresis under cyclic tensile loading) [15]; modified Coffin-Manson approach for fatigue of pseudoelastic NiTi under a stress-induced transformation regime [16]; experimental observations on rate-dependent cyclic strain of superelastic NiTi SMA [17]; SMA as an effective tool on damping oscillations [18]; probabilistic analysis for the functional and structural fatigue of NiTi wires [19]; effect of deformation frequency on temperature and stress oscillations in cyclic phase transition of NiTi SMA [20], and others.…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of the superelastic fatigue of NiTi SMA wires

Ramos

Araújo

Oliveira

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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Nickel-titanium shape memory alloys (NiTi SMA) working in superelastic regime have been applied in several fields, such as health (medicine and dentistry) and engineering, in a static or dynamic way. The aim of this paper is to study the behavior of these smart metals when subjected to dynamic mechanical stresses (fatigue). Cyclic stress-controlled tensile tests were performed to evaluate the functional and structural superelastic fatigue properties of NiTi SMA wires. The functional parameters were defined as energy dissipation, transformation stresses, residual strain, and superelastic strain, for peak stresses between 500 and 800 MPa, at frequencies of 1, 2, and 3 Hz. These frequencies were determined after a preliminary evaluation of self-heating of the NiTi wires. The number of cycles until failure (N f) was plotted as a function of peak stresses (S) in an S-N f fatigue curve, for each studied frequency. It was verified that both frequency and peak stress affected the functional behavior of the NiTi wires. However, the fatigue life was between 5.0 9 10 3 and 1.6 9 10 4 cycles, with a faster degradation in this range as higher is the applied peak stress, irrespective of the loading frequency.

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Probabilistic analysis for the functional and structural fatigue of NiTi wires

Cited by 23 publications

References 46 publications

Creep-fatigue behavior of turbine disc of superalloy GH720Li at 650 °C and probabilistic creep-fatigue modeling

Creep-fatigue behavior of turbine disc of superalloy GH720Li at 650 °C and probabilistic creep-fatigue modeling

A Stochastic Model and Investigation into the Probability Distribution of the Thickness of Boride Layers Formed on Low-Carbon Steel

An experimental investigation of the superelastic fatigue of NiTi SMA wires

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