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Initiation and propagation modelling of white etching cracks (WEC) in roller bearings

Gopalakrishnan Ravi (UGent) , Wim De Waele (UGent) and Stijn Hertelé (UGent)
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Abstract
Roller element bearings (REB) are amongst the most commonly used engineering components in a variety of machinery such as turbines, engines, transmissions etc. The conventional failure mode of REBs is rolling contact fatigue, resulting in pitting or spalling of the raceway surfaces. Harsh conditions (such as peak contact pressures and the introduction of hydrogen from the environment) may lead to premature bearing failures at 5-10% of the foreseen lifetime, due to the development of white etching cracks (WEC). WEC has been the most expensive and least understood REB failure mode in the past decade. Understanding WEC requires detailed multi-physics knowledge of bearing operation and dynamics. This Ph.D. is part of an SBO project within the SIM MaDurOS programme, focussing on lifetime prediction of wind turbine gearbox bearings. It involves UGent, VUB, SIRRIS, NREL (USA) and an extensive industrial consortium.
Keywords
Fatigue, Bearing, Finite element, WEC

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Citation

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MLA
Ravi, Gopalakrishnan, et al. “Initiation and Propagation Modelling of White Etching Cracks (WEC) in Roller Bearings.” FEARS 2019 : Book of Abstracts, edited by Kevin Dekemele, Ghent University, Faculty of Engineering and Architecture, 2019, pp. 117–117.
APA
Ravi, G., De Waele, W., & Hertelé, S. (2019). Initiation and propagation modelling of white etching cracks (WEC) in roller bearings. In K. Dekemele (Ed.), FEARS 2019 : book of abstracts (pp. 117–117). Ghent, Belgium: Ghent University, Faculty of Engineering and Architecture.
Chicago author-date
Ravi, Gopalakrishnan, Wim De Waele, and Stijn Hertelé. 2019. “Initiation and Propagation Modelling of White Etching Cracks (WEC) in Roller Bearings.” In FEARS 2019 : Book of Abstracts, edited by Kevin Dekemele, 117–117. Ghent, Belgium: Ghent University, Faculty of Engineering and Architecture.
Chicago author-date (all authors)
Ravi, Gopalakrishnan, Wim De Waele, and Stijn Hertelé. 2019. “Initiation and Propagation Modelling of White Etching Cracks (WEC) in Roller Bearings.” In FEARS 2019 : Book of Abstracts, ed by. Kevin Dekemele, 117–117. Ghent, Belgium: Ghent University, Faculty of Engineering and Architecture.
Vancouver
1.
Ravi G, De Waele W, Hertelé S. Initiation and propagation modelling of white etching cracks (WEC) in roller bearings. In: Dekemele K, editor. FEARS 2019 : book of abstracts. Ghent, Belgium: Ghent University, Faculty of Engineering and Architecture; 2019. p. 117–117.
IEEE
[1]
G. Ravi, W. De Waele, and S. Hertelé, “Initiation and propagation modelling of white etching cracks (WEC) in roller bearings,” in FEARS 2019 : book of abstracts, Ghent, Belgium, 2019, pp. 117–117.
@inproceedings{8666047,
  abstract     = {{Roller element bearings (REB) are amongst the most commonly used engineering components in a
variety of machinery such as turbines, engines, transmissions etc. The conventional failure mode of
REBs is rolling contact fatigue, resulting in pitting or spalling of the raceway surfaces. Harsh conditions (such as peak contact pressures and the introduction of hydrogen from the environment) may
lead to premature bearing failures at 5-10% of the foreseen lifetime, due to the development of white
etching cracks (WEC). WEC has been the most expensive and least understood REB failure mode in the
past decade. Understanding WEC requires detailed multi-physics knowledge of bearing operation and
dynamics. This Ph.D. is part of an SBO project within the SIM MaDurOS programme, focussing on lifetime prediction of wind turbine gearbox bearings. It involves UGent, VUB, SIRRIS, NREL (USA) and an
extensive industrial consortium.}},
  author       = {{Ravi, Gopalakrishnan and De Waele, Wim and Hertelé, Stijn}},
  booktitle    = {{FEARS 2019 : book of abstracts}},
  editor       = {{Dekemele, Kevin}},
  keywords     = {{Fatigue,Bearing,Finite element,WEC}},
  language     = {{eng}},
  location     = {{Ghent, Belgium}},
  pages        = {{117--117}},
  publisher    = {{Ghent University, Faculty of Engineering and Architecture}},
  title        = {{Initiation and propagation modelling of white etching cracks (WEC) in roller bearings}},
  year         = {{2019}},
}