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Prediction of microgeometrical influences on micropitting fatigue damage on 32CrMoV13 steel

Fabre, A., Evans, Henry Peredur ORCID:, Barrallier, L., Sharif, Khairi and Desvignes, M. 2013. Prediction of microgeometrical influences on micropitting fatigue damage on 32CrMoV13 steel. Tribology International 59 , pp. 129-140. 10.1016/j.triboint.2012.07.018

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Micropitting is a form of surface fatigue damage that occurs in the gear teeth. It is due to the effect of variation in the mechanical loading in the contact zone between the two teeth, induced especially by flank roughness. In this study, generic roughness profiles were built with geometrical parameters to simulate the contact between two rough surfaces. Using elastohydrodynamic lubrication code and Crossland's fatigue criteria, the influence on fatigue lifetime was analysed for changes in each parameter. The relevant parameters were determined that influence (i) the conventional pitting, (ii) the extent to which the von Mises equivalent stress exceeds the material yield stress in the zone where micropitting occurs, and (iii) the fatigue lifetime for steel teeth. With nitriding benefits, the same trends were shown with weaker effects.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
Uncontrolled Keywords: Micropitting; Fatigue damage; Microgeometry; Gear
Publisher: Elsevier
ISSN: 0301-679X
Last Modified: 24 Oct 2022 10:31

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