Capacitive online monitoring product and method of mixed continuous fiber composite material

Abstract

The invention provides a capacitive online monitoring product and method of a mixed continuous fiber composite material. The product comprises a capacitance monitoring device, a signal processing device, a non-conductive continuous fiber composite material layer, a conductive continuous fiber composite material layer and a polymer film, the non-conductive continuous fiber composite material layer comprises a specific layer, a polymer film is arranged in the specific layer, the polymer film is used for realizing monitoring with higher sensitivity, a conductive continuous fiber composite material layer is arranged on the surface of the specific layer, the conductive continuous fiber composite material layer is connected with capacitance monitoring equipment through a wire, and the capacitance monitoring equipment is used for monitoring capacitance change of the non-conductive continuous fiber composite material layer, and is connected with the signal processing equipment. The signal processing equipment is used for calculating and analyzing the damage condition of the non-conductive continuous fiber composite material layer; health monitoring of key areas is realized through capacitance change with higher sensitivity; the method is used for monitoring the damage condition of the product.

Description

technical field [0001] The invention belongs to the technical field of mixed continuous fiber composite materials, in particular to a capacitive online monitoring product and method of mixed continuous fiber composite materials. Background technique [0002] Continuous fiber reinforced resin matrix composites have been widely used in aerospace, wind power generation, transportation and other fields due to their excellent mechanical properties. However, during its service, it is still susceptible to damage such as delamination, fiber breakage, and matrix damage due to external environmental influences, and these damages usually occur inside the structural part and are almost undetectable outside. Therefore, the realization of continuous fiber composite components Structural health monitoring has become a key technology that needs to be solved urgently. At present, the off-line monitoring methods applied in the field of continuous fiber composite materials are relatively matu...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art that external sensors can affect the mechanical properties of components and cannot achieve high-precision monitoring, and provide a sensor that uses its own components as sensing elements without reducing the mechanical properties of components and can achieve high precision. The monitored product is specifically a capacitive on-line monitoring product of mixed continuous fiber composite materials

Images