Preparation method and product of carbon fiber composite material with designable characteristic structure

Abstract

The invention belongs to the related technical field of carbon fiber composite materials and discloses preparation method and a product of a carbon fiber composite material with a designable characteristic structure. The method comprises the following steps of (a) selecting multiple pieces of carbon fiber cloth as a raw material, selecting the carbon fiber cloth of a set quantity, and forming reinforced phase on each carbon fiber cloth; (b) coating the surfaces of all the carbon fiber clothes in the raw material with a resin matrix solution, stacking the carbon fiber clothes layer by layer, wherein the carbon fiber clothes with the reinforcing phases on the surfaces are placed a preset layer, and arranging a micro power supply in the preset set in the stacking process to obtain a prefabricated product; and (c) vacuumizing and sealing the prefabricated product in the a vacuum bag, and carrying out hot-pressing on the sealed prefabricated product, wherein the product in the vacuum bag after hot-pressing is a needed carbon fiber reinforced composite product. According to the invention, data collected by a lossless online monitoring technique achieves real-time feedback of a damaged signal more precisely and accurately.

Description

technical field [0001] The invention belongs to the technical field related to carbon fiber composite materials, and more specifically relates to a preparation method and product of carbon fiber composite materials with a designable characteristic structure. Background technique [0002] The high specific strength and high specific modulus of carbon fiber reinforced resin matrix composites are widely used in various important components, such as aircraft fuselage, submarine propeller and bridge pier repair. One of the key issues in the service process of structural components is to monitor their health / damage status. At present, there are a variety of non-destructive testing methods available for the damage state of carbon fiber composite structural parts, including ultrasonic C-scanning, X-ray, thermal imaging and eddy current technology, etc., but for aerospace, rail transit and other fields, these technologies usually require The target component is deactivated for post-...

AI Technical Summary

Problems solved by technology

At present, there are a variety of non-destructive testing methods available for the damage state of carbon fiber composite structural parts, including ultrasonic C-scanning, X-ray, thermal imaging and eddy current technology, etc., but for aerospace, rail transit and other fields, these technologies usually require Deactivate target components for post-damage inspection and assessment, no online monitoring possible

In addition, there are many other online detection technologies including optical fiber sensing technology, but these methods require the attachment of external sensors (such as optical fibers) in the carbon fiber composite structural parts, not only the installation of the sensing system is time-consuming and laborious , the fragility of the sensing system, the adaptability to service conditions, and the combination with the measured structural parts also need to be solved urgently; and due to the large size of sensors such as optical fibers, the combination with the resin interface is weak, and it may become a pre-embedded sensor. Defects

These problems will affect the application range of its detection technology, and even affect the mechanical properties of the tested structural parts.

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