A multiphase composite structure and a method of making the same

Abstract

The embodiment of the present application discloses a kind of multiphase composite structures, including a plurality of solid-liquid two-phase single-layer plate shell structure with rotation angle overlap to form three-dimensional overall structure, in which it is laid with hollow pipe with space filling curve geometry, the hollow pipe is filled with fluid substance, the end of the hollow pipe of each solid-liquid two-phase single-layer plate shell structure is provided with excitation device, and is connected with control device, control device is also connected with sensing device, the control device responds and applies instruction to the excitation device, and the viscosity of the excitation device control fluid substance.The embodiment of the present application also discloses a kind of preparation method of multiphase composite structure.By using the present application, multiphase composite structure can be formed;By controlling the physical properties of its liquid phase fluid, the multiphase composite structure shows different energy absorption capacity under different impact load, so as to realize impact resistance and energy absorption intelligent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite structure, in particular to a multi-phase composite structure and a preparation method thereof. BACKGROUND

[0002] The multi-phase composite structure refers to a complex structure composed of two or more solid-phase structures, liquid-phase structures and gas-phase structures, and has a wide potential application in various impact resistance and protection engineering fields. With the rapid development of China's industrial technology and the demand for national defense and security, higher requirements are put forward for the protection capability of the composite structure under high-speed strong dynamic load. Based on this, people have designed various double-phase or multi-phase composite structures such as thin-walled pipeline filled with foam, porous structure filled with fluid, porous microsphere filled with fluid, and minimal surface filled with fluid, so that the structure can better absorb kinetic energy and achieve the purpose of energy dissipation. However, most of the existing multi-phase composite structures limit the liquid-phase or gas-phase materials in the local area of the solid-phase materials, and lack precise control of the liquid-phase or gas-phase materials. SUMMARY

[0003] The technical problem to be solved by the embodiments of the present application is to provide a multi-phase composite structure and a preparation method thereof, which can design hollow pipelines with space-filling curve geometric paths in the solid-phase plate shell structure and fill fluid substances in the pipelines to form a multi-phase composite structure. Then, different multi-phase composite plate shell structures are combined and stacked to form a multi-phase composite structure. Further, the multi-phase composite structure is connected to a control device and a sensing device to control the physical properties of the liquid-phase fluid, so that the multi-phase composite structure exhibits different energy absorption capabilities under different impact loads, thereby realizing intelligent impact resistance and energy absorption.

[0004] In order to solve the above technical problems, the embodiments of the present application provide a multi-phase composite structure, which comprises a plurality of solid-liquid two-phase single-layer plate shell structures that are stacked with a rotation angle to form a three-dimensional overall structure. Each of the solid-liquid two-phase single-layer plate shell structures is internally laid with a hollow pipeline having a space-filling curve geometric shape. The hollow pipeline is filled with a fluid substance. The end of the hollow pipeline of each of the solid-liquid two-phase single-layer plate shell structures is provided with an excitation device and is connected to a control device. The control device is further connected to a sensing device. The sensing device senses the collision or impact signal of an external object and feeds back to the control device. The control device responds and applies instructions to the excitation device. The excitation device controls the viscosity of the fluid substance in the hollow pipeline of each of the solid-liquid two-phase single-layer plate shell structures.

[0005] Among them, the spatial distribution form of the hollow pipeline is at least one of the space-filling curves of Hibert type, Peano type, Cosper type, Moore type and Sierpinski type.

[0006] The cross-sectional shape of the space-filling curve hollow pipeline comprises one of a rectangle, a circle, and a trapezoid.

[0007] The fluid substance comprises one of a magnetic fluid, a liquid metal, an electrorheological fluid, and a shear thickening fluid.

[0008] The fluid substances in the hollow pipelines of the solid-liquid two-phase single-layer shell structures are the same or different, and the solid-phase substances and the thicknesses of the solid-liquid two-phase single-layer shell structures are the same or different.

[0009] The number of the solid-liquid two-phase single-layer shell structures is at least two.

[0010] The rotation angle of each solid-liquid two-phase single-layer shell structure is uniformly changed, linearly gradiently changed, or nonlinearly gradiently changed.

[0011] Correspondingly, the embodiment of the application further provides a method for preparing the above-mentioned multi-phase composite structure, comprising the following steps:

[0012] S1: determining the overall geometric shape of the intelligent multi-phase composite structure and the number N of the solid-liquid two-phase single-layer shell structures;

[0013] S2: designing the space distribution form, the cross-sectional shape, and the order of the space-filling curve hollow pipeline in each solid-liquid two-phase single-layer shell structure , the thickness of each single-layer shell structure , the superimposed rotation angle , the superimposed rotation angle mode, and the thickness between layers , wherein i=(1, 2, 3, …, N), and a three-dimensional model is established by using modeling software;

[0014] S3: according to the three-dimensional model in S2, an un-filled fluid-phase solid-phase composite structure is prepared by using a 3D printing preparation method;

[0015] S4: one or more fluid substances are selected and then filled in the hollow pipeline of each shell structure in the solid-phase composite structure, and an excitation device is connected to the two ends of the pipeline for sealing treatment;

[0016] S5: each excitation device in S4 is connected to a control device, and the control device is connected to a sensing device, so that the preparation of the intelligent multi-phase composite structure is completed.

[0017] Further, in the step S1, the overall geometric shape of the intelligent multi-phase composite structure can be one of a flat plate, a flat shell, a cylindrical shell, and a spherical shell.

[0018] Further, in the step S1 and step S2, the total thickness H of the smart multi-phase composite structure with the number of structure layers N is ;

[0019] Further, in the step S3, the 3D printing preparation method includes but is not limited to light curing, melt extrusion, selective laser melting, ink direct writing;

[0020] Further, in the step S4, the excitation mode of the excitation device includes but is not limited to thermal excitation, electric excitation, magnetic excitation, acoustic excitation;

[0021] Further, in the step S5, the signal received by the sensing device includes but is not limited to acceleration, speed, relative distance, pressure;

[0022] Further, in the step S5, the control algorithm of the control device can be but is not limited to proportional control method, positive feedback control method, positive feedback control method, neural network control method, deep learning control method;

[0023] Further, in the step S5, the connection mode of the excitation device, the control device and the sensing device can be wired or wireless.

[0024] The embodiment of the present application has the following beneficial effects:

[0025] (1) The smart multi-phase composite structure provided by the present application, because of the design of different order space-filling hollow pipes filled with viscous fluid, the composite structure can dissipate more energy when impacted or collided, because the viscous fluid can dissipate kinetic energy by the aid of the space-filling curve's single connectivity and space occupation advantage;

[0026] (2) The smart multi-phase composite structure provided by the present application, each solid-liquid two-phase single-layer plate shell structure is embedded in a ductile solid by space-filling curve type hollow pipes with different geometric shapes, different orders and different widths and liquid phase fluid materials filled in the pipes, and the embedded scale of the solid-liquid two-phase single-layer plate shell structure can be adjusted from micrometer level to meter level or even tens of meters, so that the multi-scale energy dissipation of the overall composite structure is realized;

[0027] (3) The smart multi-phase composite structure provided by the present application, by the combination of the sensing device, the excitation device and the control device, the viscosity of the fluid material in the hollow pipe of each solid-liquid two-phase single-layer plate shell structure can be adjusted to dissipate appropriate energy, so that the intelligent impact resistance and protection is achieved

[0028] (4) The intelligent multi-phase composite structure design and preparation method provided by the application has multiple adjustable structure parameters, has both embedding parameters of single-layer plates and parameters between single-layer plates, has a simple preparation process, and can meet the needs of various practical application scenarios such as human protection, national defense anti-violence structure, aviation impact protection and the like. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A structural schematic diagram of an intelligent multi-phase composite structure is provided for an exemplary embodiment of the application;

[0030] Figure 2 A schematic diagram of a hollow pipeline geometric path in an intelligent multi-phase composite structure is provided for an exemplary embodiment of the application;

[0031] Figure 3 Schematic diagrams of circular, square and trapezoidal cross-sectional shapes of a hollow pipeline in an intelligent multi-phase composite structure are provided for an exemplary embodiment of the application;

[0032] Figure 4 Schematic diagrams of 3-order Hibert type hollow pipelines, 4-order Hibert type hollow pipelines and 5-order Hibert type hollow pipelines in an intelligent multi-phase composite structure are provided for an exemplary embodiment of the application;

[0033] Figure 5 A schematic diagram of an intelligent multi-phase composite structure composed of 8-layer single-layer plate shell structures with gradually changing thicknesses from top to bottom is provided for an exemplary embodiment of the application;

[0034] Figure 6 A schematic diagram of an intelligent multi-phase composite structure composed of 6-layer single-layer plate shell structures with mixed thicknesses from top to bottom is provided for an exemplary embodiment of the application;

[0035] Figure 7 A schematic diagram of an intelligent multi-phase composite structure formed by 5-layer uniform-thickness solid-liquid two-phase single-layer plate shell structures with a 30° rotation angle is provided for an exemplary embodiment of the application;

[0036] Figure 8 A schematic diagram of a linear gradient rotation intelligent multi-phase composite structure formed by 6-layer gradually-thickness solid-liquid two-phase single-layer plate shell structures with a 20° rotation angle increment is provided for an exemplary embodiment of the application;

[0037] Figure 9 A schematic diagram of a nonlinear mixed gradient rotation intelligent multi-phase composite structure formed by uniform-thickness solid-liquid two-phase single-layer plate shell structures with 0°, 30°, 90°, 60° and 30° is provided for an exemplary embodiment of the application;

[0038] Figure 10A flow chart of a method for preparing an intelligent multiphase composite structure is provided for an exemplary embodiment of the present application.

[0039] Wherein, each reference sign is:

[0040] 1 - an overall structure composed of a plurality of solid-liquid two-phase single-layer plate shell structures, 11 - a solid phase, 12 - a hollow pipe, 13 - a fluid substance, 14 - an excitation device,

[0041] 2 - a connecting device,

[0042] 3 - a regulating device,

[0043] 4 - a sensing device. DETAILED DESCRIPTION

[0044] The present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings and preferred embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the scope of the present application. The embodiments described are part of the present application, but not all of the embodiments. The modules of the embodiments of the present application generally described and exemplified herein can be arranged and designed in various different configurations.

[0045] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected", "superimposed" should be understood broadly, for example, it can be a 3D printing direct connection, it can also be a mechanical welding connection, and it can also be a glue connection; The relative position of the superposition can be up and down, or it can be staggered. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Referring to Figure 1 the structural diagram shown.

[0047] The intelligent multiphase composite structure provided by the embodiment of the application is formed by a plurality of solid-liquid two-phase single-layer plate shell structures 1 which are stacked with a certain rotation angle to form a three-dimensional overall structure; the solid phase 11 of each solid-liquid two-phase single-layer plate shell structure 1 is inlaid with a hollow pipe 12 with a space-filling curve geometry, and the hollow pipe 12 is filled with a fluid substance 13, and the end of the hollow pipe 12 of each solid-liquid two-phase single-layer plate shell structure 1 is provided with an excitation device 14; the excitation device 14 on each solid-liquid two-phase single-layer plate shell structure 1 is connected to a control device 3 through wired or wireless connection 2, and the control device 3 is also connected to a sensing device 4; the sensing device 4 senses the collision or impact signal of an external object and feeds back to the control device 3, the control device 3 responds and issues instructions to the excitation device 14, and the excitation device 14 controls the viscosity of the fluid substance 13 in the hollow pipe 12 of each solid-liquid two-phase single-layer plate shell structure 1, so as to achieve intelligent impact protection.

[0048] The intelligent multiphase composite structure in the embodiment, the spatial distribution form of the hollow pipe 12 in each solid-liquid two-phase single-layer plate shell structure 1 can be one or several of Hibert type, Peano type, Cosper type, Moore type, Sierpinski type and other types of space-filling curves, and can be preferably changed or combined in multiple ways. Among them, Figure 1 The spatial distribution form of the hollow pipe 12 shown in the figure is Hibert type.

[0049] The intelligent multiphase composite structure in the embodiment, the cross-sectional shape of the hollow pipe 12 laid in each solid-liquid two-phase single-layer plate shell structure 1 can be rectangular, circular, trapezoidal or other irregular shapes, and one or more of them can be preferred in specific implementation. For example, in a preferred embodiment, the cross-sectional geometry of the hollow pipe 12 is circular, as shown in a; Figure 3 In another preferred embodiment, the cross-sectional geometry of the hollow pipe 12 is square, as shown in b; Figure 3 In another preferred embodiment, the cross-sectional geometry of the hollow pipe 12 is trapezoidal, as shown in c. Figure 3

[0050] ​The cross-sectional dimension of the space-filling curved hollow ducts 12 in each solid-liquid two-phase single-layered plate-shell structure 1 in the smart multi-phase composite structure in this embodiment can be preferably adjusted to achieve the preferred ratio of the volume fraction of the solid phase 11 and the fluid substance 13 filled in the hollow ducts 12 in the overall solid-liquid two-phase single-layered plate-shell structure 1. In a preferred embodiment, the average width of the hollow ducts 12 can be 1 / 500-1 / 50 of the maximum value of the length and width of the overall solid-liquid two-phase single-layered plate-shell structure 1, for example, the overall length and width of the smart multi-phase composite structure is 10 cm*8 cm, and the average width of the hollow ducts 12 is preferably between 0.2 mm and 2 mm.

[0051] The order of the space-filling curved hollow ducts 12 in the solid phase 11 of each solid-liquid two-phase single-layered plate-shell structure 1 in the smart multi-phase composite structure in this embodiment can be preferably changed or combined in various ways to control the complexity of the solid-liquid two-phase inclusions to achieve toughening and energy absorption effects, and to achieve the purpose of maximum energy absorption. In a preferred embodiment, the order can be an integer between 3 and 20. Among them, Figure 4 a gives a 3-order Hibert-type hollow duct 12, Figure 4 b gives a 4-order Hibert-type hollow duct 12, Figure 4 c gives a 5-order Hibert-type hollow duct 12.

[0052] The material properties of the solid phase 11 in each solid-liquid two-phase single-layered plate-shell structure 1 in the smart multi-phase composite structure in this embodiment can be independently selected. In a preferred embodiment, the average elastic modulus of the solid phase 11 can be between 1 MPa and 1000 GPa. For example, in the case of weak impact load such as human body impact protection, the solid phase 11 in each solid-liquid two-phase single-layered plate-shell structure 1 can be composed of TPU material with an elastic modulus of 500 MPa; in the case of strong impact load such as vehicle collision protection, the solid phase 11 in each solid-liquid two-phase single-layered plate-shell structure 1 can be composed of plastic metal material with an elastic modulus of about 200 GPa.

[0053] The intelligent multiphase composite structure in this embodiment, the type and volume fraction of the fluid substance filled in the hollow channel 12 of each solid-liquid two-phase single-layer plate shell structure 1 can be independently selected. In a preferred embodiment, the liquid phase fluid substance 13 filled in the hollow channel 12 can be a magnetic fluid, a liquid metal, an electrorheological fluid, a shear thickening fluid, etc., and the filling volume fraction can account for 10%-100% of the total volume of the hollow channel 12. For example, gallium-indium liquid metal with a viscosity of 2.8 mPa·s is selected as the fluid substance 13 filled in the hollow channel 12 of the 5-order Hibert type 3D printed stainless steel solid phase 11 at a volume fraction of 60%, thereby forming a solid-liquid two-phase single-layer plate shell structure 1.

[0054] The intelligent multiphase composite structure in this embodiment, the number of layers of the three-dimensional overall structure formed by the mutual spiral stacking of each solid-liquid two-phase single-layer plate shell structure 1 can be adjusted according to actual needs. In a preferred embodiment, the intelligent multiphase composite structure contains at least 3 single-layer plate shell structures 1. For example, Figure 1 The intelligent multiphase composite structure shown is 10 cm*8 cm and consists of 5 single-layer plate shell structures 1.

[0055] The intelligent multiphase composite structure in this embodiment, each solid-liquid two-phase single-layer plate shell structure 1 can be of equal thickness or non-equal thickness. For example, Figure 1 The intelligent multiphase composite structure shown consists of 5 single-layer plate shell structures 1 with uniform thickness, Figure 5 The intelligent multiphase composite structure shown consists of 8 single-layer plate shell structures 1 with gradually changing thickness from top to bottom; Figure 6 The intelligent multiphase composite structure shown consists of 6 single-layer plate shell structures 1 with mixed thickness.

[0056] The intelligent multiphase composite structure in this embodiment, each solid-liquid two-phase single-layer plate shell structure 1 can be rotated at a certain angle relative to each other when stacked into an intelligent multiphase composite structure, and the rotation angle is defined by the in-plane coordinate rotation of each solid-liquid two-phase single-layer plate shell structure 1 relative to the upper surface single-layer plate shell structure 1. The rotation angle can be uniformly varied, linearly gradient varied, or non-linearly gradient varied. By varying the rotation angle, the impact load can be dispersed among the solid-liquid two-phase single-layer plate shell structures 1 with different angles when the overall composite structure is subjected to impact and collision, thereby maximizing energy absorption. In a preferred embodiment, the rotation angle of each solid-liquid two-phase single-layer plate shell structure 1 is 30°-90°. Figure 7 The intelligent multiphase composite structure formed by 5 single-layer plate shell structures 1 with uniform thickness and a rotation angle of 30° is shown in the schematic diagram, Figure 8A linear gradient rotating intelligent multi-phase composite structure diagram formed by rotating the 6-layer solid-liquid two-phase single-layer plate shell structure 1 at an angle of 20°, Figure 9 A nonlinear mixed gradient rotating intelligent multi-phase composite structure diagram formed by rotating the uniform-thickness solid-liquid two-phase single-layer plate shell structure 1 at angles of 0°, 30°, 90°, 60°, and 30°.

[0057] In the intelligent multi-phase composite structure in this embodiment, the fluid substance 13 filled in the hollow pipe 12 in each solid-liquid two-phase single-layer plate shell structure 1 matches the excitation device 14 at the end, and preferably the connection between the excitation device 14, the regulation device 3, and the sensing device 4 can be wired or wireless;

[0058] In this embodiment, the outer surface of the three-dimensional structure as a whole can be attached to an outer shell of different materials and thicknesses. In a preferred embodiment, the outer shell 3 can be designed and selected according to the use environment, thereby improving the durability of the intelligent multi-phase composite structure. For example, in a high-humidity environment such as underwater, the material of the outer shell can be selected to be waterproof and impermeable; in a high-temperature environment, the material of the outer shell can be selected to be heat-protective.

[0059] The embodiment of the present application also provides a preparation method of an intelligent multi-phase composite structure, as shown in Figure 10 The preparation method specifically comprises the following steps:

[0060] Step S1, according to the actual application scene requirement, determining the overall geometric shape (length, width, thickness, curvature, etc.) of the intelligent multi-phase composite structure, and the number N of layers containing the solid-liquid two-phase single-layer plate shell structure 1;

[0061] Step S2, designing the spatial distribution form, cross-sectional shape, and order of the spatial filling curve hollow pipe 12 in each solid-liquid two-phase single-layer plate shell structure 1 , the thickness of each single-layer plate shell structure 1 , the superimposed rotating angle , the superimposed rotating angle mode, and the thickness between layers , wherein i=(1, 2, 3, …,N), and a three-dimensional model is established by using modeling software;

[0062] Step S3, based on the three-dimensional model in step S2, the solid phase structure 11 without filling the fluid phase substance 13 is prepared by using a 3D printing preparation method;

[0063] Step S4, one or more fluid substances 13 are selected and then filled in each layer of the plate shell structure 11 prepared in step S3, and the excitation device 14 is connected to the two ends of the pipe for sealing treatment.

[0064] Step S5, connecting each excitation device 14 in step S4 to the control device 3, and connecting the control device 3 to the sensing device 4, to complete the preparation of the intelligent multi-phase composite structure.

[0065] Further, in the step S1, the overall geometric shape of the intelligent multi-phase composite structure can be one of a flat plate, a flat shell, a cylindrical shell, and a spherical shell.

[0066] Further, in the step S1 and step S2, the total thickness H of the intelligent multi-phase composite structure with N layers of structure is ;

[0067] Further, in the step S3, the 3D printing preparation method includes but is not limited to light curing, melt extrusion, selective laser melting, ink direct writing.

[0068] Further, in the step S4, the excitation mode of the excitation device 14 matches the fluid substance 13, including but not limited to thermal excitation, electrical excitation, magnetic excitation, and acoustic excitation.

[0069] Further, in the step S5, the signals received by the sensing device 4 include but are not limited to acceleration, speed, relative distance, and pressure.

[0070] Further, in the step S5, the control algorithm of the control device 3 can be but is not limited to proportional control method, positive feedback control method, neural network control method, and deep learning control method.

[0071] Further, in the step S5, the connection between the excitation device 14, the control device 3, and the sensing device 4 can be wired or wireless. For example, wired connection can be achieved through cable, optical fiber, etc. Wireless connection can be achieved through Bluetooth, Wi-Fi, zigbee, NFC, etc.

[0072] Further, in the step S5, when the control instruction generated in the control device 3 is applied to the end excitation device 14 of the hollow tube 12 of the solid-liquid two-phase single-layer plate shell structure 1, the control instruction can be synchronous or gradually from the load contact surface layer to the bottom layer, to preferably maximize the impact energy dissipation and minimize the impact reaction force peak, and protect the safety of the protective subject.

[0073] The above disclosure is only one preferred embodiment of the present application, and of course cannot limit the scope of the present application, so the equivalent changes made according to the claims of the present application are still within the scope of the present application.

Claims

1. A multiphase composite structure, characterized by, The application relates to a smart multi-phase composite structure, which comprises a plurality of solid-liquid two-phase single-layer plate shell structures which are stacked together at a rotation angle to form a three-dimensional overall structure, each of the solid-liquid two-phase single-layer plate shell structures is internally laid with a hollow pipeline with a space-filling curve geometry, the hollow pipeline is internally filled with a fluid substance, the end of the hollow pipeline of each of the solid-liquid two-phase single-layer plate shell structures is provided with an excitation device and is connected with a control device, the control device is further connected with a sensing device, the sensing device senses a collision or impact signal of an external object and feeds back to the control device, the control device responds and applies an instruction to the excitation device, and the excitation device controls the viscosity of the fluid substance in the hollow pipeline of each of the solid-liquid two-phase single-layer plate shell structures; the fluid substance comprises one of a magnetic fluid, a liquid metal, an electrorheological fluid and a shear thickening fluid.

2. The multiphase composite structure of claim 1, wherein, The spatial distribution form of the hollow pipeline is at least one of a Hibert type, a Peano type, a Moore type and a Sierpinski type space-filling curve.

3. The multiphase composite structure of claim 2, wherein, The order of the space-filling curve of the hollow pipeline can be at least one of 3-20 orders.

4. The multiphase composite structure of claim 3, wherein, The cross-sectional shape of the space-filling curve of the hollow pipeline comprises one of a rectangle, a circle and a trapezoid.

5. The multiphase composite structure of claim 4, wherein, The fluid substances in the hollow pipelines of the solid-liquid two-phase single-layer plate shell structures are the same or different, the solid-phase substances and the thicknesses of the solid-liquid two-phase single-layer plate shell structures are the same or different.

6. The multiphase composite structure of claim 5, wherein, The number of the solid-liquid two-phase single-layer plate shell structures is at least two.

7. The multiphase composite structure of claim 6, wherein, The rotation angle of each of the solid-liquid two-phase single-layer plate shell structures is uniformly changed, linearly gradiently changed or nonlinearly gradiently changed.

8. A method for preparing the multiphase composite structure according to any one of claims 1 to 7, characterized in that The application further relates to a preparation method of the smart multi-phase composite structure, which comprises the following steps: S1: determining the overall geometric shape of the smart multi-phase composite structure and the number N of the solid-liquid two-phase single-layer plate shell structures; S2: design the spatial distribution form, cross-sectional shape, and order of the space-filling curve hollow pipe in each solid-liquid two-phase single-layer plate shell structure , thickness of each single-layer plate shell structure , superposition rotation angle , superposition rotation angle mode and thickness between layers , where i=(1, 2, 3, …,N), and a three-dimensional model is established by using modeling software; S3: preparing a solid-phase composite structure without filling a fluid phase according to the three-dimensional model in S2 by using a 3D printing preparation method; S4: selecting one or more fluid substances, filling the fluid substances into the hollow pipeline with a space-filling curve in each plate shell structure of the solid-phase composite structure, connecting the excitation device to the two ends of the pipeline and then sealing the pipeline; S5: connecting each of the excitation devices in S4 to a control device, connecting the control device with a sensing device and completing the preparation of the smart multi-phase composite structure.

9. The method of making a multiphase composite structure of claim 8, wherein, The excitation mode of the excitation device comprises one of thermal excitation, electric excitation, magnetic excitation and acoustic excitation, the signal received by the sensing device comprises one of acceleration, speed, relative distance and pressure, and the control algorithm of the control device comprises one of a proportional control method, a positive feedback control method, a neural network control method and a deep learning control method.

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