FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for wind power blade under high humidity

Abstract

The invention provides an FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for a wind power blade under high humidity, which comprises the following steps: S1, a surface-mounted FBG sensor structure: sequentially pasting an optical fiber, a colloid and a glass fiber prepreg on a substrate, and arranging a grid region in the middle of the optical fiber; s2, the pasting method comprises the steps that 1, a mold is selected, wherein the mold is selected from at least one of a linear mold, an S-shaped mold and a W-shaped mold; (2) selecting an adhesive, namely selecting at least one of 502 glue, 5210 glue, 353ND glue and loyd epoxy resin glue; 3) selection of pasting parameters: the pasting width is 11-13mm, and the pasting length is 80-120mm, and 4) a pasting method is that the sensor is pasted with specific pasting parameters by using a tool. According to the invention, the sensor is pasted by using a mold, and in the pasting process, the Loctai epoxy resin glue and the glass fiber prepreg are used for covering and pasting protection with specific parameters.

Description

technical field [0001] The invention relates to the technical field of wind power blades, in particular to a fast pasting and laying method of wind power blades using FBG with high strain transfer rate under high humidity. Background technique [0002] The current production process of large wind power blades is through manual layer laying and mold closing. It is inevitable that small defects will appear in the production process. During the service process, due to the harsh environment, sand, gravel, storms, heavy rainfall and snowfall will cause small defects. Expansion, becoming a more serious defect, will also cause condensed water or accumulated water inside the blade cavity. The long-term adhesion of accumulated water in the blade cavity will have a very serious impact on the internal sensors. Therefore, a moisture-resistant Permanent structural health monitoring is of great significance. [0003] At present, there are mainly two methods commonly used by researchers f...

AI Technical Summary

Problems solved by technology

However, because it is made of glass, there are many accidents of fiber optic cable breakage and sticking off during the blade rotating service process, and the strain monitoring effect is also easily affected during use, so there is an urgent need for a fatigue-resistant high strain transfer rate stick Way

Before the blades are molded, the longer the mold is used, the higher the cost of blade manufacturing. Therefore, how to quickly and efficiently lay out the blades during the laying process is also an urgent problem to be solved in the wind power industry.

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