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

Research output: Contribution to journalArticlepeer-review


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
Early online date5 May 2020
Publication statusPublished - Aug 2020


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