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1. (WO2015114100) WIND TURBINE BLADE WITH IMPROVED FIBRE TRANSITION

Pub. No.:    WO/2015/114100    International Application No.:    PCT/EP2015/051951
Publication Date: Fri Aug 07 01:59:59 CEST 2015 International Filing Date: Sat Jan 31 00:59:59 CET 2015
IPC: B29D 99/00
B29C 70/30
F03D 1/06
B29L 31/08
Applicants: LM WP PATENT HOLDING A/S
Inventors: JØRGENSEN, Jeppe Bjørn
KILDEGAARD, Casper
JESPERSEN, Klavs
Title: WIND TURBINE BLADE WITH IMPROVED FIBRE TRANSITION
Abstract:
A wind turbine blade (10) having a transition between two reinforcement fibre types is described. A gradual transition is provided by a combined double-tapered thickness section (175, 185) with first type reinforcement fibres (173, 183) sandwiched between second type reinforcement fibres (174, 184) or vice versa. The double-tapering is provided during layup and that the reinforcement material is impregnated with a polymer resin and then cured or hardened so that the two types of reinforcement fibres are embedded in a common polymer matrix.