Failure analysis and thermochemical surface engineering of bearings for wind turbine drivetrains
Roller element bearings inside the drivetrain of a wind turbine are exposed to highly dynamic loads that can for instance originate from the wind field, the rotor, the drivetrain itself or the generator.This can lead to premature failure of these components and consequently to high economic maintenance costs.The mechanism behind the premature failures is not well understood but is associated with the formation of so called white etching cracks (WECs).Complementary microscopic techniques were used to analyse failed bearings and to characterize the morphology of white etching cracks.Deep nitriding was studied as a potential remedy to failures associated with WECs.Performance of nitrided rollers was evaluated by rolling contact fatigue testing under conditions known to provoke WEC failure.
white etching cracks bearings wind turbine drivetrain nitriding rolling contact fatigue
Ole H.E.West Kristian V.Dahl Thomas L.Christiansen Marcel A.J.Somers
Technical University of Denmark, Dpt.Mechanical Engineering Produktionstorvet b.425, DK 2800 Kgs.Lyngby , Denmark
国际会议
北京
英文
361-365
2014-10-11（万方平台首次上网日期，不代表论文的发表时间）