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Composite material sandwich structure and manufacturing method thereof

A sandwich structure and composite material technology, applied in multi-layer structures, chemical instruments and methods, vehicle components, etc., can solve the problems of increasing structural weight and structural complexity, difficult to guarantee the strength of the connection, and high manufacturing costs, and achieve the goal of weight Light, low cost, high power transmission

Active Publication Date: 2020-12-01
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] When the thickness of the local area of ​​the composite sandwich structure exceeds 2mm, the entire structure generally needs to be cured in an autoclave, the size of the part is limited by the size of the autoclave, and the manufacturing cost is high
In some structures, the sandwich structure is divided into two parts, the thicker part is cured in an autoclave, and the thinner part is cured in an oven, and then the two parts are connected with fasteners and glue, but the strength of the connection is relatively low. Difficult to guarantee, and increases structural weight and structural complexity

Method used

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  • Composite material sandwich structure and manufacturing method thereof
  • Composite material sandwich structure and manufacturing method thereof
  • Composite material sandwich structure and manufacturing method thereof

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Embodiment Construction

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] The composite material sandwich structure and its manufacturin...

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Abstract

The invention provides a composite sandwich structure, comprising a main body structure (1) and a concentrated-tip-force diffusion block (2), wherein the main structure (1) comprises a first upper panel (101), a first lower panel (102) and a main core material (103) located between the two panels; the concentrated-tip-force diffusion block (2) and the lower panel (102) are glued and jointed via aglue film to form a wedge-shaped member; and the wedge-shaped member is laid between the first upper panel (101) and the second lower panel (102). The composite sandwich structure is molded by pressurized curing in a baking oven. According to the composite sandwich structure and the manufacturing method thereof in the invention, one end can bear concentrated force; and the manner of combined-structure secondary curing is employed, so the composite sandwich structure can be cured and molded in the baking oven, cost increase due to curing in an autoclave is avoided, and a low-density core material is protected from collapse under the action of high pressure of the autoclave.

Description

technical field [0001] The invention belongs to the field of aircraft structure design, and in particular relates to a composite material sandwich structure and a manufacturing method thereof. Background technique [0002] When the thickness of a local area of ​​a composite sandwich structure exceeds 2 mm, the entire structure generally needs to be cured in an autoclave, and the size of the part is limited by the size of the autoclave, and the manufacturing cost is high. In some structures, the sandwich structure is divided into two parts, the thicker part is cured in an autoclave, and the thinner part is cured in an oven, and then the two parts are connected with fasteners and glue, but the strength of the connection is relatively low. Difficult to guarantee, and increased structural weight and structural complexity. Contents of the invention [0003] The object of the present invention is to provide a composite material sandwich structure and its manufacturing method, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/02B64C3/18B64C3/20B32B7/04B32B37/06B32B37/10B32B7/12
CPCB32B3/02B32B7/04B32B2605/18B64C3/18B64C3/20
Inventor 韩宝钰吉飞李嘉玺周正光
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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