• Introduction (12)
  • 1.1 Wind energy (12)
  • 1.2 Wind turbine (12)
  • 1.3 Wind turbine damage (13)
  • 1.4 Condition Monitoring (1)
  • 1.5 Blade Condition monitoring (15)
  • 1.6 Thesis Organization (15)
  • 1.7 Literature review (19)
• Analysis of laminated composite beam with crack (26)
  • 2.1 Finite Element method (26)
  • 2.2 Strain crack detection based of FEM method in composite laminates (30)
  • 2.3 Modal Crack detection of beam (32)
  • 2.4 Summary (45)
• Wind Turbine Blade Modeling (46)
  • 3.1 Blade Design (46)
    • Blade cross section: (47)
    • Blade parameters: (48)
  • 3.2 Material selection (51)
    • Composite: (51)
    • Carbone fiber (52)
  • 3.3 Optimal design of the fiber orientations in composite laminate (54)
    • 3.3.1 The genetic algorithm (54)
    • 3.3.2 Genetic subsections (54)
    • 3.3.3 Components of a binary genetic algorithm (54)
      • Choosing the Cost Function and the Variables (56)
      • The Population (57)
      • Decoding the chromosomes (57)
      • Selection Schemes (57)
      • Crossover (58)
      • Mutations (59)
      • The Next Generation (59)
      • Convergence (59)
    • 3.3.4 Procedure (59)
  • 3.4 Summary (63)
• Analysis of Wind turbine blade with crack (64)
  • 4.1 Simulation of the blade with face crack using Vibration fault detection (64)
  • 4.2 Simulation under steady wind condition (66)
  • 4.3 Summary (69)
• Condition monitoring of wind turbine under impact wind condition (70)
  • 5.1 Procedure: (76)
  • 5.2 Results, dissection and validation (79)
  • 5.3 Summary (90)
• Fiber optics (91)
  • 6.1 Fiber optics installation (92)
  • 6.2 Strain sensing principle of FBG sensors (93)
  • 6.3 FBG modal results (96)
  • 6.4 Fiber optic monitoring for impact failure of blade (100)
  • 6.5 Summary (102)
• Experimental Crack Detection Using Vibration Based Monitoring (103)
  • 7.1 Experimental setup (103)
  • 7.2 Numerical Validation (111)
  • 7.3 Summary (112)
• Chapter 8 Conclusion and Future Works (113)
• References (1)