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Opening reinforcement method and reinforcement sheet of fiber reinforcement resin composite material member

A composite material component and fiber-reinforced resin technology, which is applied in the field of reinforcing sheets, can solve the problems of long molding time, difficult quality control, and many processing procedures, so as to improve product performance, improve turnover utilization, and reduce processing procedures. Effect

Active Publication Date: 2009-01-21
HARBIN FRP INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of difficult quality control, many follow-up processing steps, long time occupation of forming molds and low work efficiency in the existing reinforcement method, the present invention further provides a method for opening reinforcement of fiber reinforced resin composite material components and a reinforcement sheet

Method used

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  • Opening reinforcement method and reinforcement sheet of fiber reinforcement resin composite material member
  • Opening reinforcement method and reinforcement sheet of fiber reinforcement resin composite material member
  • Opening reinforcement method and reinforcement sheet of fiber reinforcement resin composite material member

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specific Embodiment approach 1

[0007] Specific implementation mode one: as Figure 1-8 As shown, the opening reinforcement method of the fiber-reinforced resin composite material member described in this embodiment is realized according to the following steps: Step 1. Prepare the reinforcement sheet: design the reinforcement sheet according to the size of the opening of the fiber-reinforced resin composite material member According to the geometric shape and size of the designed reinforcing sheet, prepare a reinforcing sheet mold, lay fiber prepreg tape on the mold and perform compaction to obtain the required reinforcing sheet; step 2, Lay a fiber prepreg tape with a thickness L1 of 1.5 to 3 mm on the mandrel 5 for preparing fiber reinforced resin composite components (the single layer thickness of the fiber prepreg tape is 0.15 mm, so 10 to 20 layers need to be laid); Step 3 1. After step 2 is completed, the reinforcing sheet 3 is placed, and the reinforcing sheet is placed on the boss 5-1 of the mandrel ...

specific Embodiment approach 2

[0010] Specific implementation mode two: as Figure 6-8 As shown, the reinforcing sheet in this embodiment is ring-shaped, and the thickness L2 of the reinforcing sheet is 2-4 mm.

specific Embodiment approach 3

[0011] Embodiment 3: The reinforcing sheet described in this embodiment is a fiber axially wound reinforcing sheet. The separately molded reinforcing sheet can realize zero-degree winding molding in the circumferential direction, which can greatly improve the circumferential stiffness of the opening of the fiber-reinforced resin composite member, while other forming methods cannot achieve laying at this angle. Other components and connections are the same as those in the second embodiment.

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Abstract

The invention discloses an opening reinforcement method and a reinforcement sheet of components of fiber-reinforced resin composites and relates to an opening reinforcement method and a reinforcement sheet used in the method. The invention solves the problems of the present reinforcement method such as difficult quality control, excessive subsequent working procedures, long time of occupying forming molds, and low working efficiency. The main steps of the method are as follows: preparing the reinforcement sheet; laying a fibrous presoaked band and the reinforcement sheet on a core mold for preparing the components of the fiber-strengthening resin composites and compacting fibrous presoaked band and the reinforcement sheet. The reinforcement sheet is annular with the thickness L2 of 2 to 4mm. The implementation of the reinforcement with the method can realize parallel production of a reinforcement section and composite bodies as well as the assembly type production of laying the composites, greatly improve the turnover utilization ratio of the mold, increase work efficiency, shorten the product molding cycle and lower the requirements of application periods of the resin body.

Description

technical field [0001] The present invention relates to an opening reinforcing method for a fiber-reinforced resin composite member and a reinforcing sheet used in the method. Background technique [0002] Composite structural parts have been widely used in the structural parts of aviation, aerospace and other products. Because of their advantages such as high specific strength, high specific stiffness, excellent vibration damping, fatigue resistance, and corrosion resistance, they are increasingly used. For the needs of installing instruments, reducing weight, etc., it is often necessary to open (holes) on the components, and the openings are generally large, accounting for more than 50% of the surface area. If the opening is not reinforced, because the stress at the edge of the opening is relatively high Large, the bearing capacity of the structure will be greatly reduced, so local reinforcement must be carried out near the opening. There are two existing reinforcement me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C73/04
Inventor 陈辉林再文路明坤梁岩刘永琪王明寅石建军
Owner HARBIN FRP INST
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