Broad review of “White Etching Crack” failure in wind turbine gearbox bearings: Main factors and experimental investigations

Fernando José López-Uruñuela,Beatriz Fernández-Díaz,Francesco Pagano,Ainara López-Ortega,Bihotz Pinedo,Raquel Bayón,Josu Aguirrebeitia

International Journal of Fatigue（2021）

Cited 24|Views7

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Abstract

•White Etching Crack is a premature failure in wind turbine rolling bearings.•Hydrogen, sliding contact and inclusions could act as main WEC drivers.•Electrical currents, temperature and high stresses act as accelerating WEC drivers.•DER, WEB and butterflies are microstructural changes different from and close to WEC.

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Key words

White etching crack,Rolling element bearings,Hydrogen,Non-metallic Inclusions,Microstructural alterations,Sliding/rolling contacts

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