Non‐propagating crack behaviour at giga‐cycle fretting fatigue limit

Kondo, Yoshiyuki; Sakae, Chu; Kubota, Masanobu; Yanagihara, Kazutoshi

doi:10.1111/j.1460-2695.2005.00896.x

Cited by 12 publications

(4 citation statements)

References 6 publications

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“…It has been widely used and the calibration procedure is well known. The idea of applying the PDT to a fretting fatigue device was first introduced by Kondo et al [16] and transposed by Mériaux and al. [13] for double actuator fretting fatigue experiments.…”

Section: Expertise Of Crack Arrestmentioning

confidence: 99%

FEM modeling of crack nucleation and crack propagation fretting fatigue maps: Plasticity effect

Gandiolle

Fouvry

2015

Wear

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a b s t r a c tFretting fatigue life is a strategic issue for modern industries. Various strategies have been proposed to predict finite endurance fretting fatigue behavior. For long term assemblies, « infinite » endurance is preferred. This concept was rationalized using a so-called fretting-fatigue map which plots crack nucleation and crack arrest boundaries as functions of fatigue stress and fretting force. This mapping concept was established experimentally coupling plain fretting, fatigue and fretting fatigue experiments. It was also simulated using FEM elastic simulation. The correlation was good as long as elastic stress conditions were imposed. However, once significant plastic deformation was generated in the contact the elastic prediction induced a significant discrepancy. In the frame of this work we investigated how the integration of plasticity in the modeling strategy could improve respectively the crack nucleation and crack arrest boundaries predictions. The influence of plastic deformation on contact pressure profiles and the role of residual stresses were discussed.

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Section: Expertise Of Crack Arrestmentioning

confidence: 99%

FEM modeling of crack nucleation and crack propagation fretting fatigue maps: Plasticity effect

Gandiolle

Fouvry

2015

Wear

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“…The potential drop technique (PDT) allows direct information on the crack propagation kinetic during test. It was introduced in 1957 by Barnette et Troiono to observe crack propagation in fatigue tests [8], and first applied on fretting fatigue test by Kondo et al [9]. Since then, the technique has been widely used.…”

Section: Fretting Fatigue Testmentioning

confidence: 99%

Fretting fatigue crack propagation rate under variable loading conditions

Gandiolle¹,

Fouvry²

2015

Frattura Ed Integrità Strutturale

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Fretting fatigue experiments aim to represent industrial problems and most of them endure variable loading. Being able to assess lifetime of assemblies, especially for low propagation rate conditions, is essential as experimental validation is often too expensive. Both experimental and numerical approaches are proposed to follow the crack propagation rate of steel on steel cylinder/plane fretting fatigue contact submitted to variable loading conditions. An original experimental monitoring has been implemented on the fretting-fatigue test device to observe crack propagation using a potential drop technique. A calibration curve relating crack length and electrical potential was established for the studied contact. It allows direct knowledge of the crack length and crack propagation rate. It was applied to mixed load test showing crack arrest for the last loading condition. To explain this behavior, a 2-dimensional FE modeling was implemented to simulate the complexes multi-axial contact stressing. The crack propagation rate was formalized using an effective stress intensity factor amplitude ΔK eff coupled with Paris law of the material. The crack arrest condition for a given loading was related to ΔK eff along the expected crack path crossing the material crack arrest threshold ΔK 0 . The failure was related to ΔK eff reaching the critical stress intensity factor KIC. A good correlation with experiments was observed allowing to predict the crack arrest condition although the model tends to overestimate the final crack length extension.

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“…Considering the configuration of the fretting fatigue test, this method is more suitable than the classic optical or compliance methods. The idea of applying the PDT on a fretting fatigue device was first introduced by Kondo and Kubota et al [23] and then used in their following studies [24][25][26].…”

Section: Potential Drop Technique (Pdt) Calibrationmentioning

confidence: 99%

“…Therefore, the solution that has been used to obtain the calibration is the empirical method, which consists in an experimental description of the calibration curve. This calibration was also used by Kondo and Kubota [23], but not fully described in paper.…”

Section: Principle Of the Potential Drop Techniquementioning

confidence: 99%

Characterization of crack nucleation in TA6V under fretting–fatigue loading using the potential drop technique

Meriaux

Fouvry

Kubiak

et al. 2010

International Journal of Fatigue

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In this work, the crack nucleation under fretting and fretting fatigue loading was investigated experimentally on a Ti-6Al-4V alloy. The geometry considered is a cylinder on flat contact in stick slip conditions. A new dual actuator fretting fatigue device was presented and an original interrupted test expertise methodology was proposed. In order to quantify the crack nucleation, the fretting fatigue set-up was equipped with a potential drop technique device. A proper calibration, presented in this paper, allowed a crack nucleation detection threshold of 50 µm with an error threshold of 10% at the maximum. Three parallel studies have been carried out: fretting loading tests (optical expertise), fretting fatigue test for a lifetime of 100 000 (optical expertise) and fretting fatigue interrupted tests (potential drop technique).These tests have shown that the addition of a fatigue load can provide a fall of 45% of the tangential threshold of crack nucleation compared to simple fretting loading. It has been identified that the crack nucleation is influenced by the fretting and the fatigue forces in two ways: increasing the fatigue load leads to a decrease of the tangential force nucleation threshold whereas raising the fretting load leads to a decrease of the nucleation and fracture fatigue lifetime. All tests curried out with the potential drop technique system have shown that this technique is very efficient in the case of a fretting fatigue test.

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Non‐propagating crack behaviour at giga‐cycle fretting fatigue limit

Cited by 12 publications

References 6 publications

FEM modeling of crack nucleation and crack propagation fretting fatigue maps: Plasticity effect

FEM modeling of crack nucleation and crack propagation fretting fatigue maps: Plasticity effect

Fretting fatigue crack propagation rate under variable loading conditions

Characterization of crack nucleation in TA6V under fretting–fatigue loading using the potential drop technique

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