Wind turbine blade made from shape memory fiber hybrid composite material and manufacturing method of wind turbine blade

A technology of wind turbines and memory fibers, applied in wind turbines, engines, engine components, etc., can solve the problems of blade flutter, wind turbine blade flutter, reduce wind turbine blade vibration, etc., to solve the problems of flutter, cost, etc. Inexpensive, vibration-reducing effect

Inactive Publication Date: 2016-04-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
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Problems solved by technology

[0004] In order to overcome the deficiencies of existing fan blades that cause flutter due to wind instability, the present invention provides a shape memory fiber hybrid composite wind turbine blade
Due to the use of shape memory fiber hybrid composite materials...

Method used

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  • Wind turbine blade made from shape memory fiber hybrid composite material and manufacturing method of wind turbine blade
  • Wind turbine blade made from shape memory fiber hybrid composite material and manufacturing method of wind turbine blade
  • Wind turbine blade made from shape memory fiber hybrid composite material and manufacturing method of wind turbine blade

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Embodiment Construction

[0022] The following examples refer to Figure 1-3 .

[0023] device embodiment.

[0024] The shape memory fiber hybrid composite wind power generator blade of the present invention includes an outer skin 1 , a leading edge plate 2 , a beam cover 3 , a trailing edge plate 4 , a shear web 5 and a tail plate 6 . The outer skin 1 is made of glass fiber reinforced composite material, the front edge panel 2 and the rear edge panel 4 are made of memory shape memory fiber fabric 7 and matrix resin 8, and the beam cover 3 is made of unidirectional fiber reinforced composite material , the shear web 5 is formed by bonding a superelastic shape memory fiber strip 10 and a core glass fiber resin matrix composite material 9, and the tail plate 6 is made of a glass fiber reinforced composite material. The front edge plate 2 and the outer skin 1 are bonded with epoxy resin to form the front half of the blade, the tail plate 6 and the trailing edge plate 4, and the trailing edge plate 4 and...

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Abstract

The invention discloses a wind turbine blade made from a shape memory fiber hybrid composite material and a manufacturing method of the wind turbine blade, and aims to solve the technical problem of dither caused to an existing fan blade by instability of wind. The wind turbine blade is characterized in that the fan blade adopts the shape memory fiber hybrid composite material as a driving material; the rigidity of shape memory fibers is changed by controlling the value of the current in order to change the rigidity of the shape memory fiber hybrid composite material, so that variable-rigidity control on the blade material is realized, the inherent frequency of the blade is far away from an excitation force frequency range, and fan damages caused by dither of the blade can be avoided. By adopting the shape memory fiber hybrid composite material, the wind turbine blade disclosed by the invention has the advantages of being remarkably reduced in vibration in comparison with the wind turbine blade made from a glass fiber reinforced composite material in the background technology, also realizing semi-active control of the blade, solving the problem of dither of the wind turbine blade and being lower in cost in comparison with the wind turbine blade made from a carbon fiber composite material.

Description

technical field [0001] The invention relates to a shape memory fiber hybrid composite material wind power generator blade, and also relates to a manufacturing method of the shape memory fiber hybrid composite material wind power generator blade. Background technique [0002] Shape memory alloy (SMA) is a new type of smart material that can effectively suppress vibrations. Its elastic modulus in the high-temperature austenite state is more than 3 times higher than that of low-temperature martensite, so it can be achieved by embedding SMA wires in the structure. And heat the structure, increase the local or overall stiffness, and then change the vibration characteristics of the structure, avoid the resonance frequency of the structure, realize semi-active control of the structure, and suppress the vibration of the structure. [0003] The document "Chinese Invention Patent Authorized Notification No. CN102606414B" discloses a wind turbine blade with a damping structure layer an...

Claims

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Application Information

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IPC IPC(8): F03D80/00B29D99/00B29C70/48
CPCB29C70/48B29D99/0025F05B2240/30F05B2280/2001F05B2280/5006F05B2280/6001Y02P70/50
Inventor 孙鹏王一凡王逸帆兰尊晟熊瑞靖
Owner NORTHWESTERN POLYTECHNICAL UNIV
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