Co-curing forming method for T-shaped stiffened wallboard composite material

Abstract

The invention discloses a co-curing forming method for a T-shaped stiffened wallboard composite material. According to the method, an L-shaped preform, a C-shaped preform and a prepreg twisted strip are combined through a combined forming tool formed by combining a metal mold tool and a pressure transmission soft mold tool and then assembled on the forming tool, autoclave co-curing operation is conducted after packaging, and finally the designed T-shaped stiffened wallboard composite material is obtained. By means of the method, the problem that during traditional co-curing forming, forming pressure transmission, T-shaped rib position precision and molded surface precision are difficult to consider at the same time can be solved, the method ensures that prepreg lamination forming of all positions of T-shaped ribs and skin is fully dense under a precise reference benchmark, and the forming precision, quality and forming efficiency of the T-shaped stiffened wallboard composite material are improved.

Description

technical field [0001] The invention relates to a co-curing forming method of a T-shaped reinforced wall panel composite material, more specifically, a co-curing forming method using a combination of a metal mold and a pressure-transmitting soft mold. Background technique [0002] T-shaped reinforced wall composite materials have been widely used in the aerospace field because of their high-efficiency reinforcement effects on structures. Its molding methods include co-curing molding, co-bonding molding and secondary bonding molding. The co-curing molding method can simplify the process and improve the integrity of the rib and skin structure and the consistency of the load. It has become the preferred process method for T-shaped reinforced panel structure. [0003] For traditional T-shaped reinforced wall panel composite materials, an all-metal mold or a combined tooling with a metal mold for the skin surface and a soft mold for the rib area is often used for co-curing moldi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a co-curing molding method for T-shaped reinforced wall panel composite materials, which solves the problem of traditional co-curing molding by combining metal mold tooling and pressure-transmitting soft mold tooling. It is difficult to balance the molding pressure transmission with the position accuracy and surface accuracy of the T-shaped ribs, so as to ensure that the prepreg laminates at each position of the T-shaped ribs and the skin are fully compacted under the condition of precise reference standards, and the T-shaped ribs can be improved. Forming Accuracy, Quality and Forming Efficiency of Type-Reinforced Wall Panel Composites

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