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  • Who we are

      Who we are

      • About us
      • Management and Board of Directors
      • Career
  • Services & Solutions

      Advisory

      • Project Development
      • Purchase of turbines
      • Commissioning of blades
      • End of warranty
      • Operation
      • Lifetime extension

      Solutions

      • D-String®
      • D-TE™
      • X-Stiffener™
      • RTZ Solution™

      Education

      • Structural Blade Course
      • Educational material
  • Cases
  • R&D Projects
  • News
  • Contact
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Case 4 - D-String®

Problem

Picture

Tegnebræt 5 kopi 2
Multiple transverse cracks max chord region

Solution requested


Stop crack propagation in blades without structural repairs
Gain min. 5-10 years of blade life time

Case details


1.5 MW
Turbine
37m
Length
2007
Year of commision

Deliverables


Technical opinion
6 blades with D-String®

Case pictures

Results


No maintenance cost for structural repairs in 3 years
2-3 weeks of extra availability per year
Achieving additional lifetime of min. 5-10 years is feasible

Cases


sample62

Blade course

2 days advanced structural blade course
sample62

D-TE™

Elimination of open trailing edge in mid span
picture

D-TE™

D-TE™ installation on 75 blades in South America
© Bladena 2025, Banestrøget 13, 1, 2630 Taastrup, Denmark
  • Who we are

      Who we are

      • About us
      • Management and Board of Directors
      • Career
  • Services & Solutions

      Advisory

      • Project Development
      • Purchase of turbines
      • Commissioning of blades
      • End of warranty
      • Operation
      • Lifetime extension

      Solutions

      • D-String®
      • D-TE™
      • X-Stiffener™
      • RTZ Solution™

      Education

      • Structural Blade Course
      • Educational material
  • Cases
  • R&D Projects
  • News
  • Contact