一种纤维预制体内介电传感器的三维监测结构与应用

By employing a three-dimensional monitoring structure with dielectric sensors within the fiber preform, the problems of redundant and disordered wire layout during the liquid molding process of composite materials were solved, achieving high-precision three-dimensional online monitoring and improving the molding quality and production efficiency of composite materials.

CN122130780BActive Publication Date: 2026-07-17CHINA SHIPBUILDING INDUSTRY CORPORATION NO725 RESEARCH INSTITUTE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-04-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve three-dimensional, high-precision, and low-defect online monitoring of the liquid forming process of composite materials. Traditional sensors suffer from redundant wires, cluttered layouts, and are prone to introducing internal defects, while also lacking sufficient accuracy in thickness direction monitoring.

Method used

A three-dimensional monitoring structure using a fiber prefabricated in-body dielectric sensor is adopted. Electrode units are arranged in an array along the Z-direction and connected by a first and a second wire to form a three-dimensional cross array structure, reducing the number of wires. The electrodes are isolated by an insulating intermediate layer, achieving double-sided reuse of electrode functions and orderly arrangement of wires.

Benefits of technology

It significantly improves the accuracy of three-dimensional monitoring, reduces the negative impact of wires on the mechanical properties of composite materials, reduces internal defects, and achieves real-time and accurate perception of resin flow, curing reaction and defects, thereby improving the production efficiency and product qualification rate of composite materials.

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Abstract

本发明提供了一种纤维预制体内介电传感器的三维监测结构与应用，所述纤维预制体内介电传感器的三维监测结构包括电极单元组，所述电极单元组有多个且沿垂直于Z向的平面呈阵列排布，所述电极单元组包括沿Z向排布的多个电极单元，处于同一高度的所述电极单元通过沿第一方向延伸的第一导线连接，同时通过沿第二方向延伸的第二导线连接，所述第一导线与所述第二导线相互绝缘且呈交叉布置，以形成三维交叉阵列结构。本发明形成交叉的电容监测阵列，既能独立监测同一电极单元内部因受压形变产生的电容变化以获得纤维预制体受压变化，又能监测任意两个电极单元之间的电容信号以表征树脂流动状态，同时有效防止导线冗余引起内部缺陷。
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Citation Information

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