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Embedding method of metal embedded parts in composite material sandwich structure

A technology of metal embedded parts and sandwich structures, applied in lamination devices, chemical instruments and methods, lamination and other directions, can solve the problems of discontinuous characteristics and delamination of reinforcing fibers, improve fatigue strength and bearing capacity, avoid The effect of layering and meeting the bearing requirements

Active Publication Date: 2016-05-18
SHANDONG YINGTELI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is that before the metal parts are embedded in the laminate, the prepreg or fiber cloth needs to be cut before laying, which will lead to the congenital discontinuity of the reinforcing fibers in the structure. If the fiber section is different from that of the metal embedded parts Poor bonding, easy to produce delamination on the interface

Method used

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  • Embedding method of metal embedded parts in composite material sandwich structure
  • Embedding method of metal embedded parts in composite material sandwich structure
  • Embedding method of metal embedded parts in composite material sandwich structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment includes the following steps:

[0038] Cut the metal embedded block 4 into a square, and clean the metal embedded block 4, including cleaning the metal embedded block 4 with acetone, polishing the surface of the metal embedded block 4, and using an air gun to blow the surface of the metal embedded block 4 Debris

[0039] Cut out a filling groove with the same length and width as the length and width of the embedded part and a depth greater than the thickness of the metal embedded block 4 on the sandwich panel 1, and take out the filling block cut in the filling groove;

[0040] The first cloth strip 3 having the same width as the width of the filling groove 5, and having a length greater than the sum of the height of the two side walls of the filling groove and the length of the bottom is formed along the edge direction of the filling groove. The crisscross pattern is laid in the filling groove 5 in turn, and attached to the inner wall and bottom of the fillin...

Embodiment 2

[0045] This embodiment includes the following steps:

[0046] Cut the metal embedded block 4 into a square of the required size, and clean the metal embedded block 4, including cleaning the metal embedded block 4 with acetone, polishing the surface of the metal embedded block 4, and blowing the metal embedded block with an air gun Sundries on the surface of block 4;

[0047] Cut out a filling groove with the same length and width as that of the embedded part and a depth greater than that of the metal embedded block 4 on the sandwich panel 1, and take out the filling block cut in the filling groove;

[0048] The first cloth strip 3 having the same width as the width of the filling groove 5, and having a length greater than the sum of the height of the two side walls of the filling groove and the length of the bottom is formed along the edge direction of the filling groove. The criss-cross pattern is laid in the filling groove 5 in turn, and attached to the inner wall and bottom of th...

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Abstract

The invention relates to an embedding method of a metal embedded part in a composite material interlayer structure. The method comprises the following steps: cutting the metal embedded block to form a quadrangle metal embedded block, and cleaning the metal embedded block; cutting a sandwich board to form a filling groove having same length and width with the metal embedded block and having a depth larger than the thickness of thickness of the metal embedded block, and taking out a filling block; attaching a plurality of first cloth strips having a same width with the width of the sidewall of the filling groove and having a length greater than the sum of the height of two sidewalls of the filling groove and the length of the bottom to the inner wall and the bottom of the filling groove in a cross manner, and allowing two ends of the first cloth strips to extend out of the filling groove; pressing the metal embedded block in the filling groove and the first cloth strips; and pressing the filling block in the filling groove and the metal embedded block, and fixing parts of the first cloth strips positioned outside the filling groove. The method improves the fatigue strength and the bearing capability of a material, and satisfies the bearing requirements of the embedded part in order to prolong the service life of the interlayer structure composite material.

Description

Technical field [0001] The invention relates to the field of composite materials, in particular to a method for embedding metal embedded parts in a composite material sandwich structure. Background technique [0002] The sandwich structure is composed of two or more thin skins with a thicker low-density sandwich material in the middle. The materials that can be used for the core include PVC foam, PU foam, aramid honeycomb and paper honeycomb. At present, the sandwich structure has been widely used in launch vehicles, aviation, wind turbine blades, sports equipment, medical equipment accessories, shipbuilding, trains and locomotives. [0003] Research work on the design and embedding methods of metal embedded parts in laminates is rarely carried out in China. There is a big difference in the characteristics of the components of the sandwich structure and the material of the embedded part. The discontinuity of this characteristic is bound to cause serious stress concentration at th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/00
Inventor 席涛孙霞张丽谢卫刚吴一山张帅张玉清蒋丹
Owner SHANDONG YINGTELI NEW MATERIAL
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