Device and method for repairing delamination damage of carbon fiber reinforced thermosetting resin matrix composite material

Abstract

The invention discloses a device and method for repairing layered damage of a carbon fiber reinforced thermosetting resin-based composite material. The repairing device includes: an electrode, an indenter assembly and an external power supply. The components are clamped up and down; the pressure head assembly can adjust the pressure for different working conditions under the synergy of the built-in power source and pressure sensor; the external power supply can be used for different sizes, The material component of the carbon fiber reinforced thermosetting resin matrix composite component tunes the current parameters. According to the present invention, the delamination damage of the repaired composite material component does not expand again, and the performance can be restored to 80% to 90% before the damage, which meets the actual maintenance needs, greatly shortens the repair period, and changes the component replacement maintenance into Restorative maintenance greatly saves maintenance costs.

Description

technical field [0001] The invention relates to the field of repairing composite materials, in particular to a device for repairing layered damage of carbon fiber-reinforced thermosetting resin-based composite materials and a repairing method thereof. Background technique [0002] Carbon fiber reinforced composite materials have the characteristics of light weight, high strength, high temperature resistance, good durability and excellent electrical conductivity, and are widely used in aerospace, civil engineering and other fields. With the maturity of the preparation process and the continuous improvement of material properties, the application of composite materials has gradually shifted from decorative and secondary load-bearing components to primary load-bearing components. However, the composite material structure will inevitably be subjected to low-speed impact and other dynamic loads during service, which will cause damage such as delamination between layers, resulting...

AI Technical Summary

Problems solved by technology

The disadvantage of the dig-and-fill method is that the interlayer performance of the composite laminate is damaged, and for thermosetting resin-based composite materials, it is difficult to peel off a single damaged layer or the matrix material is easy to stick after peeling, resulting in complex processes and demanding conditions; The disadvantage of the subsidy method is that it seriously affects the appearance size of the component, and it cannot be applied to the appearance covering parts and components with strict requirements on the appearance size; the disadvantage of the mechanical connection repair method is that the continuity of the fiber is destroyed and the bolt connection is prone to electrochemical corrosion. and stress corrosion causing further damage

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