WIND TURBINE BLADE WITH TRANSITION REGION
First Claim
1. Wind turbine blade (1) having a longitudinal direction (L) extending from a root region (2) to a tip (4) of the blade, said blade comprising at least one component formed of a fibre-reinforced composite material comprising a polymer matrix and a first fibre material (21) being fibreglass and a second reinforcement fibre material (22) being carbon fibres embedded in the polymer matrix, said blade further comprising a first region (11), a second region (12) and a transition region (13) between the first and the second region (11, 12), the first region (11) being reinforced predominantly with the first reinforcement fibre material (21), the second region (12) being reinforced predominantly with the second reinforcement fibre material (22), the first and the second reinforcement fibre materials differing from each other and having differing E-modulus, characterised in that the transition region (13) additionally comprises a third type of reinforcement fibre material (23) differing from both the first and the second reinforcement fibre material (21;
- 22) and having an E-modulus between that of the first reinforcement fibre material and that of the second reinforcement fibre material.
1 Assignment
0 Petitions
Accused Products
Abstract
A wind turbine blade (1) is formed of a fibre-reinforced composite material comprising a polymer matrix. The blade (1) further comprises a first region (11), a second region (12) and a transition region (13) between the first and the second region (11, 12). The first region (11) is reinforced predominantly with a first reinforcement fibre material (21). The second region (12) is reinforced predominantly with a second reinforcement fibre material (22). The first and the second reinforcement fibre material differ from each other and has differing E-modulus. The transition region (13) additionally comprises a third type of reinforcement fibre material (23) differing from both the first and the second reinforcement fibre material (21; 22) and having an E-modulus between that of the first reinforcement fibre material (21) and that of the second reinforcement fibre material (22).
-
Citations
15 Claims
-
1. Wind turbine blade (1) having a longitudinal direction (L) extending from a root region (2) to a tip (4) of the blade, said blade comprising at least one component formed of a fibre-reinforced composite material comprising a polymer matrix and a first fibre material (21) being fibreglass and a second reinforcement fibre material (22) being carbon fibres embedded in the polymer matrix, said blade further comprising a first region (11), a second region (12) and a transition region (13) between the first and the second region (11, 12), the first region (11) being reinforced predominantly with the first reinforcement fibre material (21), the second region (12) being reinforced predominantly with the second reinforcement fibre material (22), the first and the second reinforcement fibre materials differing from each other and having differing E-modulus, characterised in that the transition region (13) additionally comprises a third type of reinforcement fibre material (23) differing from both the first and the second reinforcement fibre material (21;
- 22) and having an E-modulus between that of the first reinforcement fibre material and that of the second reinforcement fibre material.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
Specification