Mixed fretting regime

Zhou, Zhao; Vincent, L.

doi:10.1016/0043-1648(95)90168-x

Cited by 160 publications

(76 citation statements)

References 5 publications

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“…This is most probably due to the low phase transition stress (380 MPa at 22°C) and the large recoverable phase transition strain (5%) of NiTi, therefore the required force to plough the surface is greatly reduced. Furthermore, since the reverse phase transition can greatly improve NiTi's deformation accommodation and diminish the nucleation of fatigue cracks, the F t -d curves of NiTi alloy remain elliptical except the initial parallelogram loops in mixed regime, which is much different from those of alumina alloy but similar to those of polymers [17,28]. For alumina alloy, because of the competition between the particle detachment and the nucleation of fatigue cracks, the elliptical and parallelogram loops are encountered in the mixed regime [17].…”

Section: The Hardness and The Fretting Wear Behaviormentioning

confidence: 94%

“…While for D ‡ 20 lm, all the friction force versus displacement (F t -d) curves are open and finally stable in a parallelepipedic shape, which is the characteristic of the gross slip regime. For D between 5 and 15 lm, the mixed fretting regime appeared, where the stable stage is characterized by elliptic F t -d curves after the first parallelepipedic loops [17].…”

Section: The Frictional Logsmentioning

confidence: 99%

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Fretting wear behavior of superelastic nickel titanium shape memory alloy

2005

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The fretting behavior of superelastic nickel titanium (NiTi) shape memory alloy was studied at various displacement amplitudes on a serve-hydraulic dynamic test machine. The results showed that the superelastic properties of the material played a key role in the observed excellent fretting behavior of NiTi alloy. Due to the low phase transition stress (only 1/4 the value of its plastic yield stress) and the large recoverable phase transition strain (5%) of NiTi, the friction force of NiTi/GCr15 stainless steel pair is smaller than the value of GCr15/GCr15 pair and at the same time the Rabinowicz wear coefficient of NiTi plate is about 1/9 the value of GCr15 plate under the same fretting conditions. For NiTi/GCr15 pair, even NiTi has a much lower hardness than GCr15, the superelastic NiTi alloy exhibits superior fretting wear property than GCr15 steel. It was found that the weak ploughing was the main wear mechanism of NiTi alloy in the partial slip regime. While in the mixed regime and gross slip regime, the wear of NiTi was mainly caused by the abrasive wear of the GCr15 debris in the three-body wear mode.

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Section: The Hardness and The Fretting Wear Behaviormentioning

confidence: 94%

Section: The Frictional Logsmentioning

confidence: 99%

Fretting wear behavior of superelastic nickel titanium shape memory alloy

2005

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“…During the initial stage, the hysteresis loop presents the parallelogram, which reveals the gross slip at the fretting contact zone. An increase of fatigue cycles induces the change of hysteresis loop from parallelogram to ellipse and thus the decreased slip amplitude and decreased sticking amplitude, which reveals the partial slip state [15,16]. The hysteresis loop maintains the stabilized ellipse with increasing fatigue cycles, which indicates the partial slip state.…”

Section: Evolution Of Hysteresis Loop Of Tangential Force Versus Fretmentioning

confidence: 97%

Multi-axial fretting fatigue wear mechanisms of steel wires and the protection design

Wang¹,

Wang

Tang³

et al. 2017

Proceedings of the 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 20

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Multi-axial fretting fatigue wear mechanisms of steel wires of hoisting rope and the protection design were explored in the present study. Multi-axial tension-torsion fretting fatigue behaviours of steel wires were investigated employing the self-made test rig. In order to quantitatively explore wear mechanisms of fatigue wires, and evolutions of wear scar size, wear depth and wear coefficient, surface morphologies of fatigue wires at distinct fatigue cycles were observed using the high speed digital microscopic system, three-dimensional white light interferometer and the scanning electron microscope. The results show that increases of fatigue cycles induce increases in the wear scar size and wear depth of fatigue wire, and an increase at first and then stabilization of wear coefficient. The contact status between contacting wires runs in the partial slip regime. The dissipated energy caused by tensile stress decreases with increasing fatigue cycles. The dissipated energy due to shear stress is relatively large during the whole test, which indicates the significant effect of shear stress on multi-axial fretting fatigue damage of fatigue wire. Wear mechanisms are mainly abrasive wear, adhesion wear, oxidation wear and fatigue wear.

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“…These regimes, identified as gross slip (fretting wear or galling), mixed slip-stick (fretting fatigue), and stick, have been associated with different damage mechanisms, namely, wear (material removal), cracking and 'no damage', of which cracking is considered the most detrimental [4,5]. Identifying these regimes in service components is an extremely difficult task that is not, as yet, totally resolved.…”

Section: Introductionmentioning

confidence: 99%