A damage mechanics approach for lifetime estimation of wind turbine gearbox materials

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Abstract

Wind turbine gearboxes (WTG) have been suffering from premature failures and rarely live up to their designed lifetime. This study focuses on a better understanding of WTG failures. A finite element model of a gear pair was coupled with a constitutive model to quantify and predict damage, while also testing for different service conditions. A damage mechanics formulation is presented based on a physics-based dislocation slip model. Additionally, an estimation of the remaining useful lifetime of the component was generated, further assisting wind turbine farm operators to move towards the implementation of a truly predictive maintenance approach.
Original languageEnglish
Article number105671
Number of pages10
JournalInternational Journal of Fatigue
Volume137
Early online date5 May 2020
DOIs
Publication statusPublished - Aug 2020

Keywords

  • Wind turbine gearbox
  • Damage
  • Lifetime estimation
  • Constitutive model

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