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Composite material construction for high-speed train and its manufacturing method

A technology for composite materials and high-speed trains, applied in superstructures, subassemblies of superstructures, chemical instruments and methods, etc., can solve the problems of non-planar panel surfaces and fatigue damage of aluminum alloy sheets, and achieve reduced life cycle costs and high Effects of impact damage tolerance and high fatigue performance

Inactive Publication Date: 2008-10-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the foam sandwich structure needs to be designed with variable cross-section, at this time, the surface of the panel is not flat, and this problem will be more prominent;
[0006] 4. In the continuous area that needs local reinforcement, it is impossible to realize the variable thickness design of the panel when the panel is continuous;
[0007] 5. Riveting can easily lead to fatigue damage of aluminum alloy sheets in the structural connection area

Method used

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  • Composite material construction for high-speed train and its manufacturing method
  • Composite material construction for high-speed train and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1 The floor cover in the lower structure of the front of the car

[0038] These floor covers were manufactured with the fiber reinforced aluminum panel foam sandwich of the present invention. A 3 / 2 laminated glass fiber reinforced aluminum alloy laminate panel 2 is used as the upper panel, and the panel contains three layers of aluminum alloy sheets 4 each 0.3 mm thick and two layers of high-strength glass fiber reinforced epoxy resin each 0.2 mm thick ( GFRP) laminate 3 with a total thickness of 1.3mm; 4 / 3 layered glass fiber reinforced aluminum alloy laminate panel 2 is the lower panel, which contains four layers of aluminum alloy sheets 4 each 0.3mm thick and three layers each 0.2 mm thick high-strength glass fiber reinforced epoxy resin (GFRP) laminate 3 with a total thickness of 2 mm. In this way, products that meet the structural performance requirements and have better impact resistance can be obtained.

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Abstract

The invention discloses a compound material used for a high-speed train and a manufacturing method thereof. A strengthening aluminum alloy layer panel with an upper layer of fiberglass and a lower layer of fiberglass is adopted to replace the existing single aluminum alloy panel, and the form of vicarious joint on the inside of the fiberglass strengthening aluminum alloy layer panel by an aluminum alloy thin plate and a high-strengthening fiberglass enhanced epoxide resin layer plate to realize the continuity of the large panels. The compound material of the invention has the excellent qualities of light quantity, high intensity, high anti-fatigue property, high impact damage allowance and high burning resistance property, etc.

Description

technical field [0001] The invention relates to a composite material structure for high-speed trains. The invention also relates to a method for the preparation of said composite structure. Background technique [0002] European Patent Application Specification EP1619020A1 discloses a lightweight aluminum panel foam sandwich structure that can be used in the manufacture of high-speed train bodies. The structural detail is that the aluminum alloy panel and the polyurethane foam core material are bonded with adhesive to form a sandwich structure. This technology has the following problems in application: [0003] 1. Aluminum alloy panels are used, and the size of the components is limited by the size of the aluminum alloy sheet. It is impossible to realize the connection of the aluminum panels and the variable thickness design of the panels when the panels are continuous; mechanical connection forms such as riveting or welding of the aluminum panels are prone to stress conce...

Claims

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Application Information

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IPC IPC(8): B32B5/18B32B7/12B32B15/14B32B17/02B32B37/02B32B38/16B32B38/18B60R13/08B60R13/02
Inventor 李文晓薛元德
Owner TONGJI UNIV
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