TWM504002U - Composite laminate with reinforcement of metal mesh - Google Patents

Abstract

A composite laminate includes two composite layers, at least one metal mesh, and multiple fibrous layers, wherein the metal mesh and the fibrous layers are disposed between the two composite layers. By adding the metal mesh with high strength and high capability of absorbing impact energy to a fibrous-reinforced composite material (for making parts, such as forks, frames, seat posts of bicycles), the holes of the metal mesh allows an interlocking structure to be easily formed in the composite material. Due to the metal mesh having high strength and toughness, a part being formed of the composite laminate will have a high strength and an increased capability of resisting impact and thus can be prevented from brittle fracture. Furthermore, with the composite laminate, a failure of the part can be warned at an earlier time, so that the part can be prevented from catastrophic damages, thus ensuring safety for users.

Description

Strengthening the structure of composite materials with metal fine mesh

The present invention relates to a structure in which a composite material is reinforced with a metal fine mesh, in particular, a composite material structure in which a metal fine mesh is added to a fiber composite material.

According to the present, fiber composite materials such as carbon fiber or glass fiber composite materials generally have the disadvantage of brittle fracture, and when there is damage caused by external force, there is a risk of catastrophic failure due to instantaneous fracture, such as The carbon fiber composite fork (Carbon Fork), which is popular in bicycles, will break in the front fork (Steerer) and the shoulder (Crown) area when it is subjected to the front impact, resulting in an instant front wheel disengagement. This causes the rider to fall over and is in danger of being fatal.

Therefore, it is necessary to improve the structural impact resistance of the fiber composite material to prevent its brittle fracture.

The purpose of the present invention is to provide a structure in which a metal mesh reinforced composite material is formed by adding a metal fine mesh to a fiber composite material, and utilizing the strength and fracture toughness of the metal fine mesh material to prevent The brittle fracture of the composite material strengthens the strength and impact resistance of the composite.

In order to achieve the above purpose, the present invention creates a structure of a composite material reinforced by a metal fine mesh, comprising a first composite layer, a second composite layer, a metal fine mesh, and an upper composite fiber. Dimensional body, lower side complex fibrous body.

The metal fine mesh, the upper composite fiber body, and the lower composite fiber body are located between the first composite material layer body and the second composite material layer body, and each fiber body comprises a plurality or a single number of fiber bodies, and the fiber The body may be arranged in different fiber angles or in the form of different woven fibers, and the upper multi-layer fiber body and the lower multi-layer fiber body may be arranged symmetrically (Symmetric stacking sequence).

In an embodiment of the present invention, the upper fibrous body comprises a first fibrous body, a second fibrous body, and a third fibrous body; and the lower composite fibrous body comprises a fourth fibrous body, a fifth fibrous body, and a first fibrous body. a six-fiber body, the second fiber body and the third fiber body are in an intersecting structure, the fifth fiber body and the sixth fiber body are in a cross structure, the first fiber body and the second fiber body The third fibrous body position is symmetrically arranged with respect to the fourth fibrous body, the fifth fibrous body, and the sixth fibrous body.

In order to achieve the above object, an embodiment of the present invention comprises a first composite layer body, a second composite material layer body, at least two metal fine meshes, a first fiber body, a second fiber body, and a third a fibrous body, a fourth fibrous body, a fifth fibrous body, a sixth fibrous body, a seventh fibrous body, an eighth fibrous body, a ninth fibrous body, and a tenth carbon fiber body, wherein: the metal is fine Net, the first fibrous body, the second fibrous body, the third fibrous body, the fourth fibrous body, the fifth fibrous body, the sixth fibrous body, the seventh fibrous body, the eighth fibrous body, The ninth fiber body and the tenth fiber body are located between the first composite material layer body and the second composite material layer body, and the second fiber body and the third fiber body fiber are arranged at an angle of a cross structure. The arrangement angle of the fifth fiber body and the sixth fiber body fiber is a cross structure, and the arrangement angle of the seventh fiber body and the eighth fiber body fiber is a cross structure, and the ninth fiber body and the tenth fiber body fiber are arranged at an angle of intersection. Structure, the first fiber body, the second fiber body, the third fiber body, the Seven The fibrous body and the eighth fibrous body are arranged symmetrically with respect to the fourth fibrous body, the fifth fibrous body, the sixth fibrous body, the ninth fibrous body, and the tenth fibrous body.

A high-strength, high-absorption impact energy metal fine mesh is added to a fiber composite component (such as a bicycle front fork (Fork), a frame (Frame), or a seat post), and is integrally molded with a composite material. Applying the pores of the metal fine mesh to produce an in-line-penetrating network structure, and using the strength and toughness of the metal fine mesh material to prevent brittle fracture of the composite material and strengthen the strength of the part and Impact resistance, with early warning features, to avoid catastrophic damage to parts, to protect the safety of the rider.

11‧‧‧First composite layer

12‧‧‧Second composite layer

20‧‧‧Metal fine mesh

31‧‧‧First fibrous body

32‧‧‧second fibrous body

33‧‧‧ Third fibrous body

34‧‧‧Four fibrous body

35‧‧‧ fifth fibrous body

36‧‧‧ Sixth fibrous body

37‧‧‧ seventh fibrous body

38‧‧‧ eighth fibrous body

39‧‧‧Ninth fibrous body

30‧‧‧10th fibrous body

3‧‧‧Upper multi-layer fibrous body

300‧‧‧lower stratified fibrous body

Figure 1 is a cross-sectional view of the creation.

Figure 2 is a cross-sectional view showing another structure of the present creation.

Figure 3 is a cross-sectional view of another construction of the present invention.

Please refer to FIG. 1 , which is a structure of a metal fine mesh reinforced composite material, comprising a first composite material layer 11 , a second composite material layer 12 , a metal fine mesh 20 , and an upper side complex . a layered fibrous body 3 and a lower side composite fibrous body 300, wherein: the fine metal mesh 20, the upper composite fibrous body 3, and the lower composite fibrous body 300 are located in the first composite layer body 11, the second Between the layers 12 of the composite material.

In the embodiment, the metal fine mesh 20 is bonded between the upper composite fiber body 3 and the lower composite fiber body 300, and the first composite material layer 11 is bonded to the outer side of the upper composite fiber body 3. The second composite layer body 12 is bonded to the outside of the lower composite fiber body 300.

The material of the first multi-layer layer body 11, the second multi-layer layer body 12, the upper side multi-layer fiber body 3, and the lower multi-layer fiber body 300 is selected from a glass fiber woven fabric (Glass Fabric) and a carbon fiber woven fabric. (Carbon Fabric), Unidirectional Prepreg, or Surface Matt, which can be used in different layers of the creation to match the design of the composite, such as bicycles. The design strength (Strength), weight distribution (Rightity), and rigidity (Rigidity) of the frame and front fork are required.

In an embodiment of the present invention, the upper composite fibrous body 3 includes a first fibrous body 31, a second fibrous body 32, and a third fibrous body 33. The lower composite fibrous body 300 includes a fourth fibrous body 34. a fifth fibrous body 35, a sixth fibrous body 36, wherein: preferably, the positions of the respective fibrous layers are symmetrically arranged in the structure of the present invention, or different fibrous layers may have different or identical fiber angles stacked on each other. The combination, for example, the upper composite fibrous body 3 and the lower composite fibrous body 300 are positionally symmetric, or the first embodiment of the first fibrous body 31 is symmetrically arranged with respect to the fourth fibrous body 34; the second fibrous body 32 and The third fibrous body 33 has a cross structure; or the second fibrous body 32 is symmetrically arranged with respect to the fifth fibrous body 35; or the fifth fibrous body 35 and the sixth fibrous body 36 have a cross structure; or The position of the third fibrous body 33 is symmetrically arranged with respect to the sixth fibrous body 36.

In an embodiment of the present invention, as shown in FIG. 1, the present invention comprises a first composite layer body 11; a second composite layer body 12; a metal fine mesh 20; and the upper composite fiber body 3 comprises a The first fibrous body 31, the second fibrous body 32, the third fibrous body 33, and the lower composite fibrous body 300 comprise a fourth fibrous body 34, a fifth fibrous body 35, and a sixth fibrous body 36. Wherein: the side of the metal fine mesh 20 sequentially joins the first fibrous body 3 from the inside to the outside 1. The second fibrous body 32 and the third fibrous body 33 are further combined with the first composite material layer body 11; the other side of the metal fine mesh 20 sequentially joins the fourth fibrous body 34 from the inside to the outside, and the fifth The fiber body 35, the sixth fiber body 36 is further combined with the second composite material layer body 12; the second fiber body 32 and the third fiber body 33 have an arrangement angle of fibers; the fifth fiber body 35 and the first The six fiber body 36 fibers are arranged at an angle of intersection; the first fiber body 31, the second fiber body 32, and the third fiber body 33 are positioned relative to the fourth fiber body 34, the fifth fiber body 35, and the first The six fiber bodies 36 are arranged in a symmetrical arrangement angle.

The present invention is applied to the first fibrous body 31, the second fibrous body 32, the third fibrous body 33, the fourth fibrous body 34, and the fifth fiber by a high-strength, high-absorption impact energy metal fine mesh 20. In the fiber composite material composed of the body 35, the sixth fiber body 36, the first composite material layer body 11, and the second composite material layer body 12, since the components of the present invention can be integrally bonded by resin bonding, Applying the pores of the metal fine mesh 20 to produce an in-line-penetrating network structure, and utilizing the strength and toughness of the metal fine mesh material 20 to prevent brittle fracture of the composite material and strengthen the parts The strength and impact resistance have the characteristics of early warning, avoiding the catastrophic damage of the parts and ensuring the safety of the rider.

Referring to FIG. 2, another embodiment of the present invention includes a first composite layer body 11, a second composite layer body 12, at least one metal fine mesh 20, an upper composite fiber body 3, and a lower side. a multi-layer fibrous body 300 comprising a first fibrous body 31, a second fibrous body 32, a third fibrous body 33, a seventh fibrous body 37, and an eighth fibrous body 38; The lower composite fibrous body 300 comprises a fourth fibrous body 34, a fifth fibrous body 35, a sixth fibrous body 36, a ninth fibrous body 39, and a tenth fibrous body 30, wherein: The metal mesh 20, the first fiber body 31, the second fiber body 32, the third fiber body 33, the fourth fiber body 34, the fifth fiber body 35, the sixth fiber body 36, the first a seventh fiber body 37, the eighth fiber body 38, the ninth fiber body 39, and the tenth fiber body 30 are located between the first composite material layer body 11 and the second composite material layer body 12, the second fiber The fibers 32 and the third fiber body 33 have an arrangement angle of fibers, and the fifth fiber body 35 and the sixth fiber body 36 have an arrangement angle of fibers, and the seventh fiber body 37 and the eighth fiber body 38 fiber. The arrangement angle is a cross structure, and the ninth fiber body 39 and the tenth fiber body 30 have an arrangement angle of fibers, and the first fiber body 31, the second fiber body 32, the third fiber body 33, and the seventh The fiber body 37 and the eighth fiber body 38 are arranged symmetrically with respect to the fourth fiber body 34, the fifth fiber body 35, the sixth fiber body 36, the ninth fiber body 39, and the tenth fiber body 30. .

In the present embodiment, the function is similar to that of the foregoing embodiment, and the seventh fiber body 37, the eighth fiber body 37, the ninth fiber body 39, and the tenth fiber body 30 of the cross-structure are added.

Referring to FIG. 1 and FIG. 2 , the second fibrous body 32 and the third fibrous body 33 are in a cross structure of +30° and -30°, and the fifth fibrous body 35 and the sixth The fibrous body 36 has a cross structure of +30° and -30°.

The second fiber body 32 and the third fiber body 33 are arranged at an angle of +45° and -45°, and the fiber arrangement angle of the fifth fiber body 35 and the sixth fiber body 36. It is a cross structure of +45° and -45°.

The metal fine mesh 20 is created between the first fibrous body 31 and the fourth fibrous body 34.

Referring to FIG. 2, in a structural embodiment, the second fiber body 32 and the third fiber body 33 have a fiber arrangement angle of +30° and -30°, and the fifth fiber body 35 The fiber arrangement angle of the sixth fiber body 36 is a cross structure of +30° and -30°, and the fiber arrangement angle of the seventh fiber body 37 and the eighth fiber body 38 is +45° and -45°. In the intersecting structure, the ninth fiber body 39 and the second fiber body 30 have an arrangement angle of fibers of +45° and -45°.

Referring to FIG. 3, in the embodiment of the present invention, the metal fine mesh 20 is plural. In the embodiment, the metal fine mesh 20 is two. In this embodiment, the structure and function are similar to the foregoing. In some embodiments, the metal fine mesh 20 is bonded between the third fibrous body 33 and the seventh fibrous body 37, and the other fine metal mesh 20 is bonded to the sixth fibrous body 36 and the ninth Between the fibrous bodies 39, a plurality of layers of metal fine mesh are added to the fiber composite material for integral molding, thereby further enhancing the strength and impact resistance of the reinforced parts.

Referring to Fig. 1 and Fig. 2, according to the actual test of the present invention, the mesh diameter of the metal fine mesh 20 must match the fiber diameter to effectively improve the interface adhesion between the metal fine mesh 20 and the fibrous body. Intensity, the mesh of the metal fine mesh 20 is preferably between 80-500 mesh size.

The surface of the metal fine mesh 20 comprises a bridging agent, according to which a special bridging agent is added to the surface of the metal fine mesh 20 to enhance the adhesion strength of the metal fine mesh 20 and the resin to make the metal The special performance of the fine mesh 20 is fully utilized.

The material of the metal fine mesh 20 is selected from materials which can be drawn into a wire mesh.

The material of the metal fine mesh 20 is selected from one of stainless steel, alloy steel, aluminum alloy, titanium alloy and copper alloy.

The composite material is, for example, a bicycle front fork (Fork), a frame (Frame), a seat tube (Seat post), a handle (Handle Bar), a rim (Rim), a crank shaft (Crank shaft) and the like. One.

The material of the first composite layer body 11 and the second composite material layer body 12 is selected from one of a composite material such as a glass fiber woven fabric, a carbon fiber woven fabric, a single direction prepreg, and a surface mat.

The following is an example of the specific experimental implementation of the creation with the accompanying drawings to demonstrate the benefits of adding composite materials to the metal fine mesh:

Example 1:

The composite bicycle front fork (Fork) was used as the verification object, and the impact test was carried out on the laminated pipe (Steerer laminated board) with and without the addition of the metal fine mesh.

Test piece type:

Test piece A: A laminated flat test piece having a total thickness of 2.2 mm without a metal fine mesh added thereto.

Laminated structure: [G cloth / ± 45 ° / ± 30 ° / O ₂ / 30°/ 45 ° / G cloth].

Here, the G cloth is: a Plane Weave Fabric having a basis weight of 164 g/m ² .

±45° is: FAW 150g/m ² carbon fiber unidirectional prepreg, arranged in +45° and -45°.

±30°: FAW 150g/m ² carbon fiber single direction prepreg, arranged in +30° and -30°.

30° is: FAW 150g/m ² carbon fiber single direction prepreg, arranged in -30° and +30°.

45° is: FAW 150g/m ² carbon fiber single direction prepreg, arranged in -45° and +45°.

O ₂ is a carbon fiber single direction prepreg having a basis weight of FAW of 150 g/m ² , and is arranged in a stack of 0° directions.

Test piece B: A laminated plate with a metal fine mesh and a total thickness of the test piece of 2.2 mm. Laminated structure: [G cloth / ± 45 ° / ± 30 ° / 0 / metal mesh / 0 / 30°/ 45 ° / G cloth].

The composite material is the same as the A test piece.

Metal fine mesh: stainless steel fine mesh, mesh number is 150mesh (for example, American mesh 150 or inch mesh 150).

Impact test method: ASTM D256 Izod impact method test piece size: 12.7 mm wide * 63.5 mm long.

Impact test results: It can be seen from the test results in the following table that adding a layer of fine metal mesh can significantly improve the impact resistance of the composite material by about 25%, which is to improve the impact resistance of the bicycle front fork standpipe and effectively protect the safety of the rider. .

Implementation example two:

The result of a catastrophic break in the riser of the actual bicycle front fork is added to the metal fine mesh:

Stacking sequence of CFRP (Carbon Fiber Reinforced Plastics) fork: Stacked with the test piece of Example A. The stacking procedure of the standpipes of the metal fine mesh is as shown in the sample B of the first example.

Process of CFRP fork: It is formed by a conventional Blow molding method at a pressure of 12 kg/ cm ² and a temperature of 145 ° C.

Execution of the front fork impact test: in accordance with the European Standard EN14781 Section 4.9.5 Rearward impact test. The weight of the hammer is 22.5kg, the impact drop weight is 640mm, and the front fork is impacted by Rigid-mounted. The actual impact test is shown in Figure 1 of the annex.

Please refer to the attached figure (a). The CFRP front fork without metal mesh is impacted and fractured at about 6 to 8 cm from the shoulder of the vertical pipe. If the rider encounters such a front fork break when riding a ride, it will be fatal and should be avoided.

Please refer to the attached figure (b) for adding the metal fine mesh to the vertical pipe from the shoulder neck 5 to 15 cm in the middle of the pipe thickness and adding a stainless steel mesh (150 mesh size (net), total weight 3.5 g), after the same impact At only 8cm, a hole in the surface material is cracked, and it is not broken into two. The addition of a 3.5g metal mesh can prevent catastrophic breaks, which proves that this creation can indeed protect the safety of riders.

Please refer to the attached figure (c) for the results of the impact test by adding a layer of stainless steel mesh (mesh size 150 mesh (net), total weight of about 7g) to the thickness of the vertical pipe, 1/3 and 2/3. Only a small indentation is produced at a distance of 8 cm from the shoulder neck, and there is no obvious crack, which obviously enhances the safety of the rider.

This example only adds 3.5g and 7g stainless steel fine mesh, for the whole 360g The weight of the fork has only increased by 1% and 2%, but it has caused a huge safety difference, which proves the excellence of this creation.

Implementation example three:

The tensile properties of the composites with no metal fine mesh, metal fine mesh (the surface of the metal fine mesh is not specially treated), and metal fine mesh with special surface treatment are tested. The results are shown in the following table:

It is known from the data of the test piece C that the metal fine mesh to be added must be treated by a special surface bridging agent, and the characteristics of the metal fine mesh can be fully exerted.

Implementation example four:

The location where the metal fine mesh is added should also be designed and selected. In this embodiment, the influence of the metal fine mesh on the outer side and the inner side of the CFRP front fork standpipe to bear the crushing load on the vertical pipe is taken as an example.

Please refer to the attached figure in Figure 3 (a) for the vertical pipe without metal fine mesh, please see the attached figure. Figure 3 (b) Add the fine metal mesh to the outside of the front fork vertical pipe. See annex III (c) for the front fork standpipe The metal fine mesh is added to the inner side to withstand the compression and compression test. The data of the resulting crushing load and bearing rigidity are shown in the following table:

It is known from the pressure explosion test that the addition of the metal fine mesh can effectively improve the compressive capacity of the composite bicycle front fork standpipe, and the placement of the metal fine mesh is more resistant to pressure and explosion on the inner side, and the crush resistance rigidity is doubled. the above.

In summary, the creation has at least the following characteristics: 1. Adding a metal-shaped fine mesh forming structure to the composite material to enhance its strength and impact resistance, and having an early warning function to prevent brittle fracture of the composite material. Catastrophic destruction.

2. With the mesh structure of metal fine mesh, it can improve the metal fine mesh and composite materials. Interface adhesion strength.

3. It is easy to soften and deform with the metal fine mesh, and it is easy to match the profiled shape of the component.

The above embodiments of the present invention are provided for convenience of explanation only. When the meaning of the case cannot be limited, the various transformation designs according to the scope of the listed patent application should be included in the patent scope of the present application.

11‧‧‧First composite layer

12‧‧‧Second composite layer

20‧‧‧Metal fine mesh

31‧‧‧First fibrous body

32‧‧‧second fibrous body

33‧‧‧ Third fibrous body

34‧‧‧Four fibrous body

35‧‧‧ fifth fibrous body

36‧‧‧ Sixth fibrous body

3‧‧‧Upper multi-layer fibrous body

300‧‧‧lower stratified fibrous body

37‧‧‧ seventh fibrous body

38‧‧‧ eighth fibrous body

39‧‧‧Ninth fibrous body

30‧‧‧10th fibrous body

Claims (16)

The invention relates to a structure for reinforcing a composite material by a metal fine mesh, comprising: a first composite material layer body, a second composite material layer body, a metal fine mesh, an upper multi-layer fiber body, and a lower side multi-layer fiber body, wherein: The metal fine mesh, the upper composite fiber body, and the lower composite fiber body are located between the first composite material layer body and the second composite material layer body. The structure of the metal fine mesh reinforced composite material according to claim 1, wherein the metal fine mesh is bonded between the upper composite fiber body and the lower composite fiber body, the first composite material layer body The outer side of the upper multi-layer fiber body is combined with the outer side of the upper multi-layer fiber body and the outer side of the lower multi-layer fiber body. The structure of the metal fine mesh reinforced composite material according to claim 1, wherein the upper composite fibrous body comprises a first fibrous body, a second fibrous body, and a third fibrous body; the lower composite fiber The body comprises a fourth fibrous body, a fifth fibrous body, and a sixth fibrous body. The structure of the metal fine mesh reinforced composite material according to claim 3, wherein the second fiber body and the third fiber body fiber are arranged in an intersecting angle. The structure of the metal fine mesh reinforced composite material according to claim 3, wherein the fifth fiber body and the sixth fiber body fiber are arranged in an intersecting angle. The structure of the metal fine mesh reinforced composite material according to claim 3, wherein the metal fine mesh side is sequentially combined with the first fibrous body, the second fibrous body, and the third fibrous body from the inside to the outside. The first composite layer body; the other side of the metal fine mesh is internally The fourth fibrous body, the fifth fibrous body, and the sixth fibrous body are combined with the second composite layer body in sequence. The structure of the metal fine mesh reinforced composite material according to claim 1, wherein the upper composite fibrous body comprises a first fibrous body, a second fibrous body, a third fibrous body, and the lower composite fiber. The body comprises a fourth fiber body, a fifth fiber body and a sixth fiber body, wherein: the metal fine mesh side sequentially combines the first fiber body, the second fiber body and the third fiber from the inside to the outside Recombining the first composite layer body; the other side of the metal fine mesh sequentially bonding the fourth fiber body, the fifth fiber body, the sixth fiber body and the second composite material layer body from the inside to the outside The second fibrous body and the third fibrous body have a cross structure; the fifth fibrous body and the sixth fibrous body have a cross structure; the first fibrous body, the second fibrous body, and the third fibrous body are opposite in position The fourth fibrous body, the fifth fibrous body, and the sixth fibrous body are symmetrically arranged. The structure of the metal fine mesh reinforced composite material according to claim 1, wherein the upper composite fibrous body comprises a first fibrous body, a second fibrous body, a third fibrous body, a seventh fibrous body, An eighth fibrous body; the lower composite fibrous body comprises a fourth fibrous body, a fifth fibrous body, a sixth fibrous body, a ninth fibrous body, and a tenth fibrous body, wherein: the fine metal mesh, The first fibrous body, the second fibrous body, the third fibrous body, the fourth fibrous body, the fifth fibrous body, the sixth fibrous body, the seventh fibrous body, the eighth fibrous body, and the first fibrous body a nine-fiber body, the tenth fiber body is located between the first composite material layer body and the second composite material layer body, the second fiber body and the third fiber body fiber Dimensional arrangement angle is a cross structure or the fifth fiber body and the sixth fiber body fiber arrangement angle are in a cross structure or the seventh fiber body and the eighth fiber body fiber arrangement angle are in a cross structure or the ninth fiber body and the The tenth fiber body fiber arrangement angle is a cross structure, and the first fiber body, the second fiber body, the third fiber body, the seventh fiber body, and the eighth fiber body are positioned relative to the fourth fiber body, The fifth fibrous body, the sixth fibrous body, the ninth fibrous body, and the tenth fibrous body are symmetrically arranged. The structure of reinforcing a composite material by a metal fine mesh comprises a first composite material layer body, a second composite material layer body, at least two metal fine meshes, an upper multi-layer fiber body, a lower side multi-layer fiber body, The upper composite fibrous body comprises a first fibrous body, a second fibrous body, a third fibrous body, a seventh fibrous body and an eighth fibrous body; and the lower composite fibrous body comprises a fourth fibrous body a fifth fibrous body, a sixth fibrous body, a ninth fibrous body, and a tenth fibrous body, wherein: the fine metal mesh, the first fibrous body, the second fibrous body, the third fibrous body, The fourth fiber body, the fifth fiber body, the sixth fiber body, the seventh fiber body, the eighth fiber body, the ninth fiber body, and the tenth fiber body are located in the first composite material layer body, Between the second composite material layers, the second fiber body and the third fiber body fiber are arranged at an angle of intersection or the fifth fiber body and the sixth fiber body fiber are arranged at an angle of intersection or the seventh fiber body. And the eighth fiber body fiber arrangement angle is a cross structure or the ninth fiber body and the The ten-fiber fiber arrangement angle is a cross structure, and the first fiber body, the second fiber body, the third fiber body, the seventh fiber body, and the eighth fiber body are positioned relative to the fourth fiber body, the first Five fiber The arrangement angle of the body, the sixth fibrous body, the ninth fibrous body, and the tenth fibrous body is symmetrically arranged. The structure of the metal fine mesh reinforced composite material according to any one of claims 3 to 9, wherein the second fibrous body and the third fibrous body have a cross structure of +30° and -30°, and The fifth fibrous body and the sixth fibrous body have a cross structure of +30° and -30°. The structure of the metal fine mesh reinforced composite material according to any one of claims 3 to 9, wherein the second fiber body and the third fiber body have a cross structure of +45° and -45°. And the fifth fiber body and the sixth fiber body have a cross structure of +45° and -45°. The structure of the metal fine mesh reinforced composite material according to claim 9, wherein the second fiber body and the third fiber body have a cross structure of +30° and -30°, and the fifth fiber body The sixth fiber body has a cross structure of +30° and -30°, and the seventh fiber body and the eighth carbon fiber body have a cross structure of +45° and −45°, and the ninth fiber body, the first fiber body The ten-fiber body has a cross structure of +45° and -45°. The structure of the metal fine mesh reinforced composite material according to claim 9, wherein the metal fine mesh is bonded between the third fibrous body and the seventh fibrous body, and the other fine metal mesh is combined. Between the sixth fibrous body and the ninth fibrous body. The structure of the metal fine mesh reinforced composite material as described in claim 1 or claim 9, wherein the mesh of the metal fine mesh is between 80-500 Mesh size (mesh). The structure of the metal fine mesh reinforced composite material as described in claim 1 or claim 9, wherein the surface of the metal fine mesh comprises a primer. The structure of the metal fine mesh reinforced composite material according to claim 1 or 7 or 9, wherein the material of the first composite material layer body, the second composite material layer body, and the fibrous body is selected from the group consisting of One of composite materials such as glass fiber woven fabric, carbon fiber woven fabric, single direction prepreg, and surface mat.