Fatigue analysis of wind turbine blade materials using a continuum damage mechanics framework

Research output: ThesisDissertation (TU Delft)

171 Downloads (Pure)

Abstract

The work done for this thesis is related to fatigue analysis of various material types used in the wind turbine blades. For the analysis, a framework from the thermodynamics of irreversible processes with internal variables and Continuum Damage Mechanics (CDM) is used. Thermodynamic principles provide a generic framework that is valid for the entire fatigue phenomenon. CDM framework is then applied to characterize a specific mechanism under consideration. As the fatigue phenomenon consists of many mechanisms and their interactions, the scope of work is limited to setting the generic framework and to characterize only a few and their interactions to demonstrate the framework potential. The thesis consists of four main sections: introduction, theory, mathematical formulation, and validation. Before starting the framework construction, a decent idea about vastness in fatigue analysis methodologies adopted by the research community is required. Hence chapter 1 is prepared to give readers, not in detail, but a helicopter view of the field. This overview allows drafting the achievable scope and methodology for this research work keeping in mind the ultimate goal of analysing full-scale wind turbine blade sustaining fatigue throughout its operational life.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Delft University of Technology
Supervisors/Advisors
  • Alderliesten, R.C., Supervisor
  • Benedictus, R., Supervisor
Thesis sponsors
Award date2 Jun 2021
Print ISBNs978-94-6423-259-2
DOIs
Publication statusPublished - 2021

Keywords

  • Wind turbine blade
  • Material fatigue analysis
  • Cyclic deformation
  • Continuum damage mechanics
  • Thermodynamics

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