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An integrally reinforced unidirectional fiber-reinforced composite lattice sandwich panel and its preparation method

A technology for reinforcing composite materials and unidirectional fibers, applied in chemical instruments and methods, lamination, lamination devices, etc., can solve problems such as low shear strength, avoid local damage, high shear specific strength and specific stiffness , The effect of improving the shear strength of the dough core

Inactive Publication Date: 2016-02-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of low shear strength between the panel and the core in the existing composite material lattice sandwich structure, and provides an integrally reinforced unidirectional fiber-reinforced composite lattice sandwich panel and its preparation method

Method used

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  • An integrally reinforced unidirectional fiber-reinforced composite lattice sandwich panel and its preparation method
  • An integrally reinforced unidirectional fiber-reinforced composite lattice sandwich panel and its preparation method
  • An integrally reinforced unidirectional fiber-reinforced composite lattice sandwich panel and its preparation method

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specific Embodiment approach 1

[0032] Embodiment 1: An integrally reinforced unidirectional fiber-reinforced composite material lattice sandwich panel in this embodiment is composed of a pyramidal lattice core 1, a reinforced upper panel 2, a reinforced lower panel 3, and a composite material lower panel 5 ;

[0033] The pyramid lattice core 1 is composed of a plurality of unidirectional fiber-reinforced composite material lattice structure unit cells 6, and each unidirectional fiber-reinforced composite material lattice structure unit cell 6 is composed of four rods with a pyramid structure. In the horizontal direction, interlocking notches are provided at the joints of the vertical rods, and multiple unidirectional fiber-reinforced composite lattice structure unit cells 6 interlock with each other in a criss-cross manner through the interlocking notches to form a pyramid. Dot matrix core 1;

[0034] All two unidirectional fiber-reinforced composite lattice structural unit cells 6 at the upper end of the ...

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment differs from Embodiment 1 in that: the materials of the reinforced upper panel 2 and the reinforced lower panel 3 are metal materials or composite materials. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment differs from Embodiment 2 in that: the reinforced upper panel 2 and the reinforced lower panel 3 are made of low-density magnesium alloy or aluminum alloy. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to an integrally-reinforced unidirectional fiber-reinforced composite material truss core panel and a preparation method thereof. The technical scheme aims at solving the problem that the shear strength between a face plate and a core in a conventional composite material truss core structure is relatively low. The product consists of a pyramidal truss core, a reinforced upper face plate, a reinforced lower face plate, a composite material upper face plate and a composite material lower face plate. The method comprises: 1, preparing a corrugated plate; 2, preparing a unidirectional fiber-reinforced composite material truss structural unit cell; 3, preparing the pyramidal truss core; 4, preparing the reinforced upper face plate and the reinforced lower face plate; and 5, preparing the integrally-reinforced unidirectional fiber-reinforced composite material truss core panel. The fiber direction of a truss structural rod is along with the stress direction of the rod and is continuous, so that the bearing capacity of the pyramidal truss structure is improved, the product is excellent in bearing capacity, the technology is simple, and the cost is low.

Description

technical field [0001] The invention relates to a lattice sandwich panel of composite material and a preparation method thereof. Background technique [0002] The composite material lattice sandwich structure has the characteristics of high specific strength and high specific rigidity, and the open space inside the core is convenient for pre-embedding micro devices, functional materials, etc., so it has potential application prospects. The existing preparation method of the composite material lattice core rod is cut by water cutting process on the composite material panel, which makes the fibers in the composite material lattice core rod not all along the direction of the rod, so that the composite The bearing capacity of the material lattice sandwich structure is greatly reduced; in addition, when the composite lattice sandwich structure is subjected to loads such as bending and torsion, due to the small bonding area between the lattice core and the panel, the lattice core ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/22B32B3/28B32B7/04B32B37/15B32B37/06B32B37/10
Inventor 吴倩倩马力吴林志
Owner HARBIN INST OF TECH
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