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Compensation method for glued joint surface of composite material co-glued and reinforced structure
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A technology of composite materials and co-gluing, which is applied in the field of compensation of composite materials co-gluing reinforced structures, can solve problems such as poor compensation effects, and achieve the effects of improving the quality of bonding, solving technical problems, and accurate compensation
Active Publication Date: 2018-11-02
CHENGDU AIRCRAFT INDUSTRY GROUP
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[0006] Although the above-mentioned patents have improved the compensation method for bonding, the compensation effect is not good, and the above-mentioned problems still exist
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Embodiment 1
[0030] A method for compensating the glued joint surface of a composite material co-glued and reinforced structure, characterized in that it includes the following steps:
[0031] Step 1: Preparations before bonding: prepare all the components to be bonded, including ribs, panel skins, etc.; check all parts to ensure that they meet the conditions to be bonded; prepare the forming tooling and frame , including tooling leak detection, surface degreasing, surface cleaning and other operations.
[0032] Step 2: Prepare the combination of normal temperature curing glue and non-alkali glass cloth 3 media: Receive the isolation film, cut two pieces according to the size of the large reinforced structural ribs, leave a margin of 40-50mm, and place one of them Zhang lays it flat on the platform first; since the size of the current large-scale reinforced structure is irregular, and there is basically a turning point in the length direction, it must be cut into two sheets. If the size o...
Embodiment 2
[0041] A method for compensating the glued joint surface of a composite material co-glued and reinforced structure, characterized in that it includes the following steps:
[0042] Step 1: Preparations before bonding: prepare all the components to be bonded, including ribs, panel skins, etc.; check all parts to ensure that they meet the conditions to be bonded; prepare the forming tooling and frame , including tooling leak detection, surface degreasing, surface cleaning and other operations.
[0043] Step 2: Prepare the combination of normal temperature curing glue and non-alkali glass cloth 3 media: Receive the isolation film, cut two pieces according to the size of the large reinforced structural ribs, leave a margin of 40-50mm, and place one of them Zhang lays it flat on the platform first; since the size of the current large-scale reinforced structure is irregular, and there is basically a turning point in the length direction, it must be cut into two sheets. If the size o...
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Abstract
The invention relates to the technical field of co-bonding forming of composite co-bonding stiffened structures, particularly to a compensation method for a bonding surface of a composite co-bonding stiffened structure. The compensation method comprises step I, preparation before bonding; step II, combination preparation of a normal-temperature solidified glue solution and an alkali-free glass cloth medium; step III, assembly and location of parts of the stiffened structure before bonding; step IV, measurement of clearances between ribs of the stiffened structure and skin of wall plates; and step V, compensation of the bonding surface of the ribs of the stiffened structure and skin of the wall plates, and bonding. The compensation method is based on a traditional bonding forming method, a pre-co-bonding glue film compensation technology is added aimed at complexity and specificity of the large stiffened structure wall plates, the bonding technological scheme is perfected, and the defect that the clearances of the bonding surfaces of the large stiffened structure wall plates are difficult to control through the traditional bonding forming method is overcome.
Description
technical field [0001] The invention relates to the technical field of co-gluing forming of composite materials and reinforced structures, in particular to a method for compensating the bonding surfaces of composite materials co-gluing and reinforcing structures. Background technique [0002] With the increasing application of advanced composite materials in aircraft structures, the concept of structural design is changing, and the current main development trend is to adopt the overall design concept. Integrated design refers to the design of several parts into a larger whole, thereby reducing the number of parts, reducing the additional weight of connectors and connection transition areas, reducing assembly, thereby reducing structural weight and cost. [0003] At present, there are mainly the following types of structural integrated forming processes: 1) co-curing, secondary co-curing, and co-gluing processes; 2) liquid forming processes such as preforms / RTM (or RFI); 3) f...
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