Phase transformation in white etching area in rolling contact fatigue

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Investigations of White Etching Crack (WEC) Formation under Rolling Contact Fatigue

A premature failure mode in steel rolling element bearings called white structure flaking (WSF) occurs in wind turbine gearbox bearings. WSF can occur in as little as 6-24 months of operation. WSF is associated with microstructural alterations called white etching area (WEA) and white etching cracks (WECs) that form in the ~1 mm zone beneath the contact surface. The tribological drivers for WSF...

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Understanding the fatigue crack growth phenomenon in railheads requires a study of driving forces such as the crack tip opening and sliding displacements, under repeated rolling contact. Finite element simulations, allowing elastic-plastic deformation, and mixed-mode crack growth laws were utilized to demonstrate that the fatigue crack growth rates display a minimum after a finite amount of cra...

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Rolling contact fatigue of surface coatings—a review

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ژورنال

عنوان ژورنال: MATEC Web of Conferences

سال: 2018

ISSN: 2261-236X

DOI: 10.1051/matecconf/201816511004