Fibre preform for laying on a curved surface of a mould
US10179425B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2014 |
| Grant date | Jan 15, 2019 |
| Priority date | — |
| Expiry date | Aug 10, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making a root section (7) of a wind turbine blade (5), the method comprising: providing a fiber preform (14) comprising the steps of: providing at least one first ply of dry reinforcing material (15); placing a stiffening strip (25) on the at least one first ply of dry reinforcing material; placing at least one second ply of dry reinforcing material on the stiffening strip to form a stack; and binding the stack together along binding rows (16); the method further comprising placing the fiber preform on a curved mold surface such that the binding rows and the stiffening strip are orientated in a chordwise direction; wherein the stiffening strip has a stiffness such that the stack is self-supporting so that the stack does not buckle when laid on the curved mold surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.