Analysis of Surface Crack Growth under Rolling Contact Fatigue in a Linear Contact

Deng, Song; Hua, Lin; Han, Xiaotao; Wei, Wenting; Huang, Song

doi:10.1080/10402004.2014.983250

Cited by 14 publications

(2 citation statements)

References 22 publications

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“…Pawel found that visible cracks have an initial angle of inclination to the surface of 20° to 30° in bearing steel. Deng noticed that the crack propagation could be divided into two phases: First, the crack propagates obliquely downward from the bearing raceway surface with an approximate inclination angle of 30° relative to the raceway surface. Second, after the crack propagates to a certain depth, it changes direction and grows towards the surface and possible crack branching.…”

Section: Resultsmentioning

confidence: 99%

Statistical analysis on rolling contact fatigue in railroad axle bearing steel

Guo

Yang

et al. 2018

Fatigue Fract Eng Mat Struct

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High‐strength steels are widely used in high‐performance bearings utilized in most mechanical systems. However, there has been little statistical analysis regarding the fatigue failure behaviour of the material, where surface peeling resulted from contact fatigue during rolling is a significant life‐limiting mechanism. In this study, we examine the statistical behaviour of surface‐crack nucleation, propagation, and peeling in a high‐speed train axle bearing made of GCr15 steel by using a laboratory rolling‐contact equipment. We reveal that cyclic rolling‐contact leads to the formation of a hardness gradient in the outer ring of the bearing. The gradient layer is of several millimetres. The peeling rate could be as high as 28 μm per million cycles when the contact pressure is close to that applied in real service. Peeling‐induced cracking is dominantly transgranular. The incipient angle is about 23.2°, and its depth could be hundreds of micrometres. The findings reported here could be employed to assess the lifetime of bearings made of GCr15 steel and possible other engineering metals.

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Section: Resultsmentioning

confidence: 99%

Statistical analysis on rolling contact fatigue in railroad axle bearing steel

Guo

Yang

et al. 2018

Fatigue Fract Eng Mat Struct

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“…Many studies showed that shear stresses are responsible for the appearance of cracks (Bhattacharyya et al, 2017;Juvinall and Matshek, 2008;Deng, Hua, Han and Huang, 2014). Studies like Deng, Hua, Han, Wei and Huang (2015) and Deng, Hua, Han and Huang (2013) showed that there will be a peak of stresses around a subsurface material defect, initiating a crack that will spread until it reaches the surface, causing failure of the element.…”

Section: Introductionmentioning

confidence: 99%

A study of the stress field generated by the contact between a sphere and a flat plate for a simplified model of deep-groove ball bearing

Köhn¹,

Silva²

2020

Ing. Inv.

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Bearings are mechanical elements capable of transferring motion between two or more parts in a machine. When an external load is applied, the rolling elements and their rings tend to initiate a cyclical movement between themselves. Hence, they are linked by a variable type of contact, thus creating high surface stresses. As these elements are subjected to millions of cycles within their lifespan, these cyclical stresses may create cracks and cause failure by rolling contact fatigue (RCF). Due to the importance of this subject, it is vital to study the stress field caused by contact between the rolling parts in a bearing. This paper offers two approaches on the cyclical stresses in a deep-groove ball bearing: an analytical approach, using Hertz’s theory for contact stresses; and a numerical simulation, using the Finite Element Method (FEM) with the software Inventor and Nastran In-CAD. The results of both approaches were compared, and stress behavior was analyzed as the depth of the inner ring was increased. It was concluded that the surface stresses are greatly superior than the strength of the materials used in the bearings, and that the area influenced by these stresses are small when compared to the dimensions of the whole.

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Composite failure analysis of an aero-engine inter-shaft bearing inner ring

Hong,

Liu,

et al. 2024

Engineering Failure Analysis

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Analysis of Surface Crack Growth under Rolling Contact Fatigue in a Linear Contact

Cited by 14 publications

References 22 publications

Statistical analysis on rolling contact fatigue in railroad axle bearing steel

Statistical analysis on rolling contact fatigue in railroad axle bearing steel

A study of the stress field generated by the contact between a sphere and a flat plate for a simplified model of deep-groove ball bearing

Composite failure analysis of an aero-engine inter-shaft bearing inner ring

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