Rolling Contact Fatigue Mechanisms—Accelerated Testing Versus Field Performance

Zwirlein, O.; Schlicht, H.

doi:10.1520/stp36149s

Cited by 79 publications

(47 citation statements)

References 15 publications

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“…24), in a companion paper published concurrently with that of Lorosch (Ref. 23) and using the same 7205B-size bearing inner race data, state that "contact pressures less than 2.6 GPa (370 ksi) do not lead to the formation of pitting within a foreseeable period.…”

Section: Hertz Stress-life Relationmentioning

confidence: 94%

Comparison of Life Theories for Rolling-Element Bearings

Zaretsky

Poplawski

Peters

1996

Tribology Transactions

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Nearly five decades have passed since G. Lundberg and A. Palmgren published their life theory in 1947 and 1952 and it was adopted as an ANSIIABMA and ISO standard in 1950 and 1953. Subsequently, many variations and deviations from their life theory have been proposed, the most recent being that of E. Ioannides and T.A. Harris in 1985. This paper presents a critical analysis comparing the results of different life theories and discussing their implications in the design and analysis of rolling-element bearings. Variations in the stresslife relation and in the critical stress related to bearing life are discussed using stress fields obtained from three-dimensional, finite-element analysis of a ball in a nonconforming race under varying load. The results showed that for a ninth power stress-life exponent the Lundberg-Palmgren theory best predicts life as exhibited by most air-melted bearing steels. For a 12th power relation reflected by modem bearing steels, a Zaretsky-modified Weibull equation is superior. The assumption of a fatigue-limiting stress distorts the stress-life exponent and overpredicts life. in-plane shear stress, Pa (psi)

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Section: Hertz Stress-life Relationmentioning

confidence: 94%

Comparison of Life Theories for Rolling-Element Bearings

Zaretsky

Poplawski

Peters

1996

Tribology Transactions

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“…6 imply that, under RCF testing, the effect of rotational speed on DER formation is less significant than that of the maximum contact pressure or temperature. In most cases, additionally, stress and temperature are of more interest from an industrial point of view [4,10]. Hence 3-dimensional maps of DER formation are shown for various p 0 and T values using the proposed model.…”

Section: Der% Mapsmentioning

confidence: 99%

Strain-induced martensite decay in bearing steels under rolling contact fatigue: Modelling and atomic-scale characterisation

Song

Galindo-Nava

et al. 2017

Acta Materialia

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a b s t r a c tMartensite decay in bearing steels manifested as dark etching regions (DERs) under rolling contact fatigue (RCF) is modelled. The proposed model is established based on a dislocation-assisted carbon migration mechanism. The proposed model is capable of predicting the progress of DER formation and the corresponding mechanical property evolution with increasing number of cycles, in good agreement with the experimental data reported throughout seventy years. The effects of RCF testing conditions on DER formation are studied and a useful tool, DER% maps, is developed for illustrating the temperature, contact pressure and number of cycles for DER occurrence. Moreover, an atom probe tomography study is carried out, revealing the nature of DER ferrite and obtaining strong evidence supporting the postulated DER formation mechanism. The successful application of the dislocation assisted carbon migration mechanism to DER formation provides a plausible explanation to the phenomenon of martensite decay under rolling contact fatigue.

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“…This is then followed by a study of the sensitivity of this rolling bearing to the four microstructural parameters: 0 , 1 , and 0 . In all studies, the volume of the raceway is 0 = 0.00454 3 . Apart from the final study, we assume that 0 = 1 inclusion per mm 3 such that the total number of potentially damaging inclusions is =4,540,000.…”

Section: Probability Of Failure -A Sensitivity Analysismentioning

confidence: 99%

“…Under these conditions, significant cyclic strain-induced metallurgical changes occur [3]. These changes consist of the formation of white etching areas (WEAs) and dark etching areas (DEAs) close to the running surface that are orientated at specific angles.…”

Section: Introductionmentioning

confidence: 99%

Fatigue tolerant design of rolling bearings

Gill

Lewis²

2015

Proceedings of the Institution of Mechanical Engineers, Part J:

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A quantitative method for assessing the influence of steel cleanliness on the fatigue life of rolling bearing raceways is presented. The approach systematically accounts for the effect of the highly variable stress state within raceways. Finite element analysis is used to determine the stress state in the bearings. A fracture mechanics model for the safe stress amplitude as a function of inclusion size is employed from Lewis and Tomkins, J Engng Tribology, 226 (5) 389 (2012). The size and number of large inclusions in a large volume of steel are estimated by the Generalised Pareto Distribution. These three elements are combined to determine the failure probability of the raceway in an example rolling bearing. A sensitivity analysis to the various microstructural input parameters is conducted. It is found that the size distribution of the larger inclusions is the most important factor in controlling the fatigue resistance of rolling bearings, and that residual stresses must be considered to produce realistic predictions.

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Rolling Contact Fatigue Mechanisms—Accelerated Testing Versus Field Performance

Cited by 79 publications

References 15 publications

Comparison of Life Theories for Rolling-Element Bearings

Comparison of Life Theories for Rolling-Element Bearings

Strain-induced martensite decay in bearing steels under rolling contact fatigue: Modelling and atomic-scale characterisation

Fatigue tolerant design of rolling bearings

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