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Metal and composite material connecting method based on bionic structure

A composite material and connection method technology, applied in the direction of coating, etc., can solve problems such as failure to meet metal and composite material connection requirements, stress concentration, bonding failure, etc., to avoid long-term reliability problems, stability enhancement, and good connection intensity effect

Inactive Publication Date: 2020-07-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional composite material connection technology will cause defects such as stress concentration or bonding failure, which cannot meet the requirements of metal and composite material connection based on bionic structures

Method used

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  • Metal and composite material connecting method based on bionic structure
  • Metal and composite material connecting method based on bionic structure
  • Metal and composite material connecting method based on bionic structure

Examples

Experimental program
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Embodiment 1

[0027] figure 2 The metal joint to be connected in this embodiment is manufactured by additive materials, including a solid area and a microstructure area, the solid area undertakes specific functions, and the microstructure area undertakes the connection function with the composite material; image 3 It is the connecting part of the composite material, including the solid area of ​​the composite material and the filling connection area. The solid area undertakes specific functions, and the filling connection area and the filling connection area are figure 2 The microstructured regions in the

[0028] Figure 4 In this embodiment, after the metal joint and the composite material are connected as a whole, the metal region and the composite region are connected through a connection region with a microstructure, so that the metal region and the composite material region can realize their respective functions.

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Abstract

The invention discloses a metal and composite material connecting method based on a bionic structure. Through three-dimensionally (3D) printing a microstructure with reasonable layout and assisting metal surface treatment processes such as a physical or chemical method, a composite material or a matrix material thereof is filled in a microstructure through injection molding or die pressing and other molding means so as to be connected with a main body structure of a composite product, so that the structure weight is reduced, and meanwhile, the connecting strength of the composite material is improved. Under the condition of the same connecting performance, the stress concentration of mechanical connection and the wear failure of cementation are avoided; and in the detection and repair process, a metal part can be reused when the microstructure in the metal is undamaged.

Description

technical field [0001] The invention belongs to the technical field of material connection, and in particular relates to a metal and composite material connection method based on a bionic structure. Background technique [0002] 3D printing, also known as additive manufacturing, is a technology that manufactures three-dimensional products through 3D printing equipment based on the designed 3D model. Due to its high manufacturing flexibility, it plays an important role in industrial production and daily life. Lightweight design technology is to rationally design products by removing materials or changing materials according to the original product model to meet the requirements of weight reduction. At present, the combination of lightweight technology and 3D printing technology lies in the lightweight design of some product structures that cannot be satisfied by traditional manufacturing processes. 3D printing technology can be used to quickly manufacture products. [0003] ...

Claims

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Application Information

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IPC IPC(8): B29C45/14B29C43/18
CPCB29C43/18B29C45/1418B29C2043/189
Inventor 戴宁张凌鹤郭策
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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