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A method of cutting off laminate layers, eg a glass-fibre or carbon-fibre laminate layer in the blade of a wind turbine

A technology for wind turbines, cutting methods, applied in the field of laminated layers, capable of solving problems such as delamination problems not given

Active Publication Date: 2007-07-25
LM GLASSFIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not give a solution to the delamination problems associated with thickness variations and the formation of air pockets and resin-rich regions

Method used

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  • A method of cutting off laminate layers, eg a glass-fibre or carbon-fibre laminate layer in the blade of a wind turbine
  • A method of cutting off laminate layers, eg a glass-fibre or carbon-fibre laminate layer in the blade of a wind turbine
  • A method of cutting off laminate layers, eg a glass-fibre or carbon-fibre laminate layer in the blade of a wind turbine

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] FIG. 1 is a cross-sectional view of a portion of a known laminated object 101 comprising a plurality of combined laminated layers 103 , wherein the laminated object is made thinner by varying the number of laminated layers 103 . In FIG. 1 , the laminated object 101 initially comprises six laminated layers 103 , and the number of laminated layers 103 is gradually reduced to three laminated layers 103 , whereby the thickness of the laminated object 101 is halved. This decrement occurs gradually to avoid clearly showing notches that would lead to a weakening of the laminated object's strength, but can also occur in areas where the load on the laminated object is not too high. The weight of the laminated layers is minimized. Figure 1 also shows the upper layer 105 and the air pockets 107 and resin-rich regions formed between the upper layer 105 and the lower layer due to taper that can lead to wrinkling in the laminated surface. To avoid these air pockets, where fiberglass...

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Abstract

The invention relates to a method of cutting off laminate layers for use in a fibre-reinforced laminate object (701) comprising a number of combined laminate layers (703) wherein, along a section of the at least one rim of the laminate layer, a tapering cut is performed through the thickness of the laminate layer, whereby the thickness of the laminate layer is reduced. Since not only the number of laminate layers, but also the thickness of the individual laminate layers are reduced, a laminate layer is accomplished that can be used in a laminate object, by which both the issues of areas rich in resin, air pockets and the risk of delamination are reduced. The invention also relates to a laminate layer for use in a fibre-reinforced laminate object comprising a number of combined laminate layers and a fiber - reinforced laminate object in the form of the blade of a wind turbine, wherein the blade of the wind turbine comprises a number of combined laminate layers.

Description

technical field [0001] The present invention relates to a method of cutting laminated layers for use in a fibre-reinforced laminated object comprising a plurality of combined laminated layers. In addition, the invention relates to a laminate layer for use in a fiber reinforced laminated object comprising a plurality of combined laminate layers. Finally, the invention also relates to a fibre-reinforced laminated object in the form of a blade of a wind turbine, wherein said blade of a wind turbine comprises a plurality of combined laminated layers. Background technique [0002] Laminates are used in a variety of different objects, wherein a laminated object is composed of a plurality of combined laminated layers. [0003] An example of an object made of laminated layers is a fiberglass object, where a plurality of laminated layers in the form of fiberglass sheets are typically placed on top of each other, and the number of laminated layers depends on the desired properties of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/54B32B3/02F03D1/06
CPCY10T83/0476Y10T83/0259Y02E10/721Y10T156/1052B32B2250/20F03D1/065B32B5/06B29C70/545Y10T428/24488B32B5/024B32B3/263B32B2262/101B32B5/022B29C70/30B32B2603/00Y10T83/04Y10T428/24479F03D1/0675F03D3/062B32B2250/44B32B5/26B32B3/02Y10T428/24612Y10T428/24777Y02E10/74Y02E10/72B29C70/304B29C70/302
Inventor T·K·雅格布森M·达尔
Owner LM GLASSFIBER
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