3results about How to "High damage tolerance" patented technology

The application discloses a kind of laminated composite intercalation repair methods, belong to laminated composite maintenance technical field.The application uses the way of multilayer intercalation reinforcement patch, significantly increase the bonding area of patch and original laminated laminated composite material, can effectively improve the bonding strength of repair area, so that repair area will not become laminated laminated composite material / member dangerous area;The bonding surface is composed of multiple planes, and adjacent bonding surfaces bear tensile or shear load respectively, and after debonding or damage of a certain bonding surface, the crack will not spread to other bonding surfaces, significantly enhance the damage tolerance of repair bonding area, and further improve the mechanical properties of repair material / member.

The application discloses a manufacturing method of aileron bonding parts in the technical field of aerial unmanned planes, and comprises the following steps: S1, preparing laminated plate parts and edge strip parts; S2, pretreating a bonding tool; S3, pretreating bonding surfaces of the laminated plate parts and the edge strip parts; S4, preparing a honeycomb core and a foam core, laying a rubber film or foaming rubber on a preset bonding surface, positioning a lower skin on the bonding tool, and sequentially assembling a preformed framework to be subjected to pre-foaming treatment. By adopting a carbon fiber composite laminated structure, a composite layout of a foam sandwich and a honeycomb sandwich, and an integrated structure design of a single beam and multiple ribs, the application greatly reduces the number of independent parts and standard parts, significantly reduces the overall weight of the aileron bonding parts, effectively improves the flight maneuvering flexibility and endurance of the unmanned plane, and simultaneously reduces flight energy consumption and manufacturing cost.

The invention provides a carbon fiber composite material battery shell as well as a preparation method and application thereof. The carbon fiber composite material battery shell comprises an upper cover and a box body; the box body is provided with side walls and an internal reinforcing beam; a skin of the box body is formed by compression molding of a plurality of layers of biaxial warp-knitted carbon fiber cloth; the internal reinforcing beam is a prefabricated carbon plate; the prefabricated carbon plate is embedded and fused in the skin of the box body in the compression molding process of the box body to form an integrated structure; when the maximum height-width ratio H / L of the side walls is larger than 0.2, the included angle between the main fiber guiding direction and the length direction of the box body ranges from + / -55 degrees to + / -65 degrees. When the maximum height-width ratio H / L of the side walls is smaller than or equal to 0.2, the included angle between the main fiber guiding direction and the length direction of the box body ranges from + / -30 degrees to + / -50 degrees. The weight is reduced, the consumption of the carbon fibers is reduced, meanwhile, the mechanical property is kept unchanged, the material can be applied to new energy electric vehicles, and the cost is reduced.