Metal layer bionic microstructure fiber metal laminate capable of realizing resin self-infiltration

Abstract

The invention discloses a metal layer bionic microstructure fiber metal laminate capable of achieving resin self-infiltration, and belongs to the field of plate composite materials. The structure can effectively solve the problem of difficulty of infiltration of resin into deeper blind hole or blind pit microstructures in the surface of the metal layer of the fiber metal laminate, and the interlayer bonding performance of the metal matrix and the fiber prepreg is enhanced. The structure is composed of a vertical conical hole dense array structure which is of a spatial geometry asymmetric structure and is spaced by a certain distance, a multi-stage structure composed of a conical hole main hole and conical hole auxiliary holes, or a pit structure of an Archimedes spiral or logarithmic spiral track with different spatial curvatures, and a groove microstructure provided with an Archimedes spiral or logarithmic spiral track. The structure is mainly used for infiltrating resin into deeper blind hole or blind pit microstructures inthe surface of a metal layer of the fiber reinforced metal laminate, and the laminate is mainly used for manufacturing aviation covering parts such as fuselages, skins and the like of large aircrafts and high-speed aerospace vehicles in the field of aerospace manufacturing.

Description

technical field [0001] The invention proposes a metal layer bionic microstructure fiber metal laminate capable of realizing resin self-wetting, which belongs to the field of plate composite materials. Background technique [0002] With the development of aerospace manufacturing, civilian large wide-body airliners and military supersonic fighters are more and more in line with the needs of the development of the times and become the focus and focus of research and development for a considerable period of time in the future. With the improvement of the volume and speed of large aircraft, higher requirements are put forward for the lightweight of aircraft manufacturing materials. Fiber metal laminates rely on their high specific strength, specific stiffness, excellent fatigue performance, heat resistance and corrosion resistance and good The significant advantages of impact resistance, low density and light weight have become the focus of aviation manufacturing development rese...

AI Technical Summary

Problems solved by technology

Traditional metal surface treatment methods such as sandpaper grinding, sandblasting, anodizing, etc. can increase the metal surface roughness to a certain extent and enhance the bonding performance between metal and resin, but they still cannot effectively solve the problem of separation in the forming process of laminate parts. layer problem

In recent years, although some scholars have begun to propose a certain microstructure on the surface of the laminate metal layer to enhance its interlayer bonding performance, the problem of resin infiltration of deep blind holes or blind pits in the microstructure has yet to be solved.

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