D-Stiffener™

Eliminates cracks in midspan section

The D-Stiffener™ is a simple product developed to eliminate cracks in the trailing edge midspan section of the blade without added significant weight.

D-Stiffener™ will positively affect the operation of your wind turbine

The D-Stiffener™ significantly increases the anticipated lifetime of your blades.
The D-Stiffener™ secures operation of the blade without added maintenance cost.
Decreasing time for maintenance reduces the LCoE thus increasing the profit margin.
The D-Stiffener™ can easily be installed up-tower as a retrofit solution.

Why it works

D-Stiffener™ increases the buckling capacity of the blades. Buckling in wind turbine blades is caused by edgewise loading due to gravity and induces peeling in the adhesive bondlines near the trailing edge and close to the webs. Peeling in the adhesive bondlines directly causes cracks, which may lead to larger failures in your blades. The D-Stiffener™ connects the pressure side and suction side panels which prevents the inward deformation of the panels.

No D-Stiffener™ installed

With D-Stiffener™ installed

Easy installation

The D-Stiffener™ can be installed up-tower using simple tools with either rope access, skylift or using a 360 degree platform.
Bladena assists with the installation of the D-Stiffener™ and works with a network of independent service providers who ensure a reliable and cost-effective installation, meeting the highest standards of safety and quality.