Effect of corrosive environment on fretting fatigue under plane bending.

Gotoh, Yoshiki; Ohuchida, Hisashi

doi:10.2472/jsms.38.816

Cited by 2 publications

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“…Axle is the key component in the train walking. It is easy to generate micro fatigue damage on the axle surface, because it suffers cyclic loading in service conditions and have a interference fit with the bearing [1][2][3]. The fretting fatigue failure of axle can lead to severe accidents.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Transverse Cracks Forming in a Railway Axle

Hong

2019

MSF

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Surface defect is the main form of axle failure. In this paper, the cause of surface defect on wheel seat of a certain type of dynamic axle is analyzed systematically. In the test, the macroscopic chemical component of inspection axle was determined using spectrometer. And the chemical composition near the crack was detected by energy disperse spectroscopy and X-ray photoelectron spectroscopy analysis. The microstructure of the crack area was observed by optical microscope, while the crack microscopic characteristic was characterized using scanning electron microscope and confocal laser scanning microscope. The study found that, the defect is transverse crack, which was distributed circumferentially along the wheel seat. Further more, the typical features of wear or friction and iron oxide was observed on the wheel seat near the crack area. It was concluded that, due to surface presure and the existence of stress concentration, which the wheel and axle interference fit resulted in, wear abrasion and fretting fatigue initiated fatigue crack.

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Section: Introductionmentioning

confidence: 99%

Analysis of Transverse Cracks Forming in a Railway Axle

Hong

2019

MSF

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The Problems of Fretting Fatigue Testing

Waterhouse

1992

Standardization of Fretting Fatigue Test Methods and Equipment

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Fretting fatigue testing usually arises as the result of some failure which it is imperative to overcome either by a modified design or application of some surface treatment. In such cases the test rig is usually designed to replicate the actual situation as closely as possible (e.g., a press fit or riveted joint) with environmental conditions as near to those occurring in practice (e.g., high temperature or a marine atmosphere). In laboratory testing the purpose is much wider, and usually entails, for instance, the assessment of different materials for their susceptibility to fretting damage, or the effect of variables such as clamping load, amplitude of slip and frequency, in particular environmental conditions. The type of fatigue test is very relevant (i.e., whether the response is the same in rotating-bending, push-pull or torsion, and whether in the latter two cases, a mean stress is applied). The nature of the contact is also material (i.e., whether it is flat-on-flat or cylinder-on-flat, or even crossed cylinder). How is the clamping stress to be applied? If by a proving ring, then the pressure can change according to whether the debris is trapped or can escape; a dead weight method might be preferable. Surface finish and residual stress are factors which must be taken into account. All these matters must be considered in devising a recommended testing procedure.

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Effect of corrosive environment on fretting fatigue under plane bending.

Cited by 2 publications

References 0 publications

Analysis of Transverse Cracks Forming in a Railway Axle

Analysis of Transverse Cracks Forming in a Railway Axle

The Problems of Fretting Fatigue Testing

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