784 results about "Thermoplastic composites" patented technology

The invention relates to the technical field of composite material detection, in particular to a fiber-reinforced thermosetting thermoplastic composite structure interface quality detection method and system.The method comprises the steps that vibration excitation is applied to a target area of the surface of a to-be-detected sample, and the amplitude of the excitation is lower than the damage critical value of a weak bonding interface; a dynamic response signal perpendicular to the interface is collected in a vibration field non-diffusion area of the excitation point of the target area; performing frequency domain transformation on the dynamic response signal, and separating a fundamental frequency component and at least one high-order harmonic frequency component; according to the nonlinear enhancement effect of the high-order harmonic frequency component relative to the fundamental wave frequency component, whether the weak bonding defect exists in the target area or not is judged. According to the method, the technical bottleneck that the dynamic evolution process of the weak bonding defect of the composite material interface is difficult to capture in real time is effectively solved, sensitive response to the microdefect is realized through a nonlinear harmonic characteristic enhancement effect, and the recognition precision of traditional ultrasonic detection is improved.

A method of repairing a thermoplastic composite material is disclosed herein. The method includes placing the thermoplastic composite material on a supporting anvil, placing an energy transmission material on top of the thermoplastic composite material, and applying an ultrasonic welder to the thermoplastic composite material to consolidate and repair the thermoplastic composite material. Another method of repairing a thermoplastic composite material is disclosed herein. The method includes placing an energy transmission material on a supporting anvil, placing the thermoplastic composite material on top of the energy transmission material, and applying an ultrasonic welder to the energy transmission material to consolidate and repair the thermoplastic composite material.

The invention belongs to the technical field of high-performance composite materials, and discloses a carbon fiber reinforced thermoplastic composite material performance database, a construction method and application thereof, and the method comprises the following steps: S1, database structure construction; s2, experimental sample collection and data standardization; s3, feature engineering and variable reduction; s4, training a machine learning model; s5, constructing and verifying an adaptive model; and S6, data expansion and feedback optimization. According to the method, material performance prediction and formula parameter reverse design under target performance are realized through systematic acquisition and normalization processing of three types of data of material components, preparation process and performance characterization and building of a nonlinear mapping model among a material structure, a process and performance through a machine learning method. The database can be used for intelligently recommending a high-performance composite material combination scheme, is suitable for rapid screening and customized development of various thermoplastic composite materials, effectively reduces the research and development cost and development cycle, and improves the material design efficiency.

The invention discloses a thermoplastic composite material T-shaped rib forming mold and a using method thereof, and belongs to the technical field of T-shaped rib forming machining. The thermoplastic composite material T-shaped rib forming mold comprises an L-shaped piece shaping mold and a T-shaped rib curing mold; the L-shaped piece shaping mold comprises a shaping mold side pressing block, a shaping mold rectangular block is arranged on one side of the shaping mold side pressing block, a shaping mold upper pressing block is arranged above the shaping mold rectangular block, and the shaping mold upper pressing block is vertically connected to the shaping mold side pressing block in a sliding mode. The T-shaped rib is decomposed into the two L-shaped pieces, the flat plate and the plug, the L-shaped pieces are subjected to hot-pressing shaping through the L-shaped piece shaping mold, the multiple layers of thermoplastic prepregs only need to be laid and fixed to the shaping mold in order according to the laying sequence, layer-by-layer welding is not needed, and the manufacturing period is shortened.

The invention discloses a composite material performance prediction method based on multi-field coupling multi-scale analysis and a knowledge graph, which integrates microstructure modeling, graph neural network representation learning, cross-scale parameter coupling modeling and robust optimization analysis. The method is suitable for prediction and design of key mechanical properties such as modulus, strength and toughness of a thermosetting / thermoplastic composite material under different working conditions. The method comprises the following steps: firstly, constructing a grain-level tissue knowledge graph based on an electron backscatter diffraction image, secondly, constructing a multi-scale input system comprising a microscopic variable (such as a fiber volume fraction), a mesoscopic variable (such as a layer thickness sequence) and a macroscopic variable (such as a load condition), and finally, performing robust optimization by utilizing a multi-objective evolutionary algorithm to obtain a multi-scale input system. And outputting a material performance prediction result and a knowledge graph associated with the ji structure-process-performance. According to the method, the accuracy and interpretability of performance prediction of the composite material can be remarkably improved, and data-knowledge dual-drive support is provided for design optimization of the high-performance composite material.

The invention discloses a continuous fiber reinforced thermoplastic composite material and a preparation method thereof. The continuous fiber reinforced thermoplastic composite material comprises 35-40% of a polypropylene matrix with a melt index of 10-30 g / 10 min; 55% of continuous fibers are selected from glass fibers, carbon fibers or basalt fibers which are arranged in one direction, and the monofilament diameter is 9-15 microns; the intumescent flame retardant and the ammonium polyphosphate are compounded according to the mass ratio of 2: 1; 1-2% of an interface modifier, wherein a silane coupling agent KH-570 or PP-g-MAH is selected and used; the roughness Ra of the aluminum foil layer is 1.5-2.5 microns; under the condition of basically ensuring that the overall performance of the material is not greatly influenced, the application capability of the material is expanded, and the fireproof and flame-retardant capability of the material is improved, so that a thermoplastic composite material scheme can also be adopted under various harsh use conditions.

The invention relates to the technical field of temperature monitoring, in particular to a welding joint temperature monitoring method in a thermoplastic composite material welding scene, which comprises the following steps: acquiring temperature data of different positions of a thermoplastic composite material in the welding scene at each acquisition moment to form a temperature image point matrix at each acquisition moment; acquiring fluctuation data of the temperature image point matrix at each temperature fluctuation moment; dividing each fluctuation data cluster of fluctuation data in the temperature image point matrix at each temperature fluctuation moment; calculating a fluctuation distribution factor at each temperature fluctuation moment; obtaining a temperature abrupt change factor of each fluctuation data cluster of the temperature image point matrix at each temperature fluctuation moment; acquiring a fluctuation abrupt change factor at each temperature fluctuation moment; acquiring the laser intensity nonuniform weight at each temperature fluctuation moment; and monitoring the temperature of the welding joint in the thermoplastic composite material welding scene based on the uneven weight of the laser intensity. The accuracy of welding joint temperature monitoring is improved.

The invention belongs to the technical field of guide mechanisms, and provides a belt width guide mechanism for a thermoplastic composite material, which comprises an equipment main body, a tray, at least one guide wheel, a filament guide plate and a filament bundle outlet, the charging tray, the guide wheel, the tow guide plate and the tow outlet are all detachably connected to the equipment body, and the charging tray is used for winding a composite tow band; the guide wheel is rotationally connected to the equipment main body and is provided with a first guide groove with a preset width; the wire guide plate is provided with a second guide groove with a preset width; the tow outlet is provided with a third guide groove with a preset width; one end of the composite material tow band is fixedly connected to the material disc and sequentially penetrates through the first guide groove, the second guide groove and the third guide groove, the other end of the composite material tow band is used for being connected with the pressing roller, and the central axis of the second guide groove and the axial direction of the third guide groove are both tangent to the peripheral contour of the pressing roller. The composite material tow band feeding device can position and guide the composite material tow band, and is convenient to replace and install to adapt to feeding of tow bands with different widths.

The invention relates to the technical field of structural part injection molding, in particular to a manufacturing method and equipment for a continuous fiber reinforced structural part, and aims to solve the problem that a structural part manufactured in the prior art cannot meet the requirements for light weight and high strength at the same time. Comprising the following steps: heating a thermoplastic composite material sheet and putting the thermoplastic composite material sheet into a mold; designing an original material formula, preparing materials according to the formula, and mixing the materials into a uniform melt; conveying and injection molding of melt materials are controlled through a reversing valve; the manufacturing data is associated with the product. The equipment comprises an extruding and mixing mechanism for melting, plasticizing and mixing each material in an original material formula, an injection molding mechanism for realizing the injection of a melt material, an injection molding machine mold locking unit for completing molding and curing, a control system for coordinating the whole process and an information tracing mechanism for ensuring the traceability of a product. The scheme is suitable for manufacturing functional parts with extremely high requirements on performance and safety in aerospace and automobile industries.

The invention belongs to the technical field of thermoplastic composite material ultrasonic welding, and particularly relates to a fabric fiber reinforced thermoplastic composite material energy-conducting-rib-free type continuous ultrasonic welding method which comprises the following steps: S1, cleaning the surface of a to-be-welded part of a fabric fiber reinforced thermoplastic composite material; s2, a workpiece to be welded is fixed to an anvil; s3, selecting an ultrasonic welding head; s4, the initial positions of the pre-pressing structure and the pressure maintaining structure are adjusted; s5, the moving path of the mechanical arm is planned, the posture of the mechanical arm is controlled, and the moving speed of the mechanical arm is set; s6, ultrasonic welding parameters are set; s7, the mechanical arm drives the ultrasonic welding head, the pre-pressing structure and the pressure maintaining structure to move downwards; and S8, the mechanical arm drives the ultrasonic welding head, the pre-pressing structure and the pressure maintaining structure to conduct continuous ultrasonic welding according to the set welding path and welding parameters, and after ultrasonic welding is completed, a power source is turned off. According to the invention, high-quality and high-efficiency connection of the composite material is realized.

The invention belongs to the technical field of thermoplastic composite material forming preparation, and relates to an automatic thermoplastic composite material part laying device and method based on an oil heating mold. The device comprises a forming mold and a high-heat-conduction oil circulating system, a profiling runner network is integrated in the mold, and the runner layout is dynamically adjusted according to the local curvature radius and is combined with a high-temperature stable material to achieve efficient heat conduction. Through the three-stage process of forced circulation heating of high-thermal-conductivity silicone oil, prepreg laying and gradient cooling, and by dynamically adjusting the oil temperature and the flow speed, the fusion interface bonding and non-isothermal crystallization behaviors are synchronously optimized. The problems of large temperature gradient, dynamic response delay, high energy consumption and the like of a traditional heating scheme are solved, high-precision forming of a complex molded surface workpiece is achieved, the comprehensive energy consumption is low, and an efficient equipment foundation is provided for automatic manufacturing of thermoplastic composite materials.

The invention belongs to the technical field of uncertainty probability characterization analysis, and discloses a thermoplastic composite material leading edge structure design allowable value probability characterization method and system under a small sample condition, and the method comprises the steps: defining a plurality of candidate probability distribution models; fitting each model based on the original sample data and calculating an AIC value and a BIC value; a dynamic weight factor alpha is calculated according to the sample size n, and then a hybrid information criterion HIC value is calculated; generating a plurality of sample sets through Bootstrap self-service sampling, recalculating the HIC value on each sample set, and counting the selected optimal frequency of each model; and determining an optimal probability distribution model according to the frequency, wherein the optimal probability distribution model is used for representing a design allowable value. According to the method, the dynamic weight factor alpha is introduced, AIC and BIC criteria are effectively unified, optimal balance between prediction precision and model complexity is achieved under the condition of small samples, and engineering practicability and robustness are remarkably improved.

A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. The golf club head includes a frontal portion and a rear portion formed of a thermoplastic composite material. The thermoplastic composite material is mechanically captured by at least one first attachment feature provided in the frontal portion such that the thermoplastic composite material may be joined to the frontal portion without the use of additional adhesives or external fasteners.

The invention discloses a fiber-reinforced thermoplastic resin-based composite material based on dynamic reversible interface interaction and a preparation method and a recycling method thereof. The fiber-reinforced thermoplastic resin-based composite material comprises a modified thermoplastic resin matrix and a modified fiber reinforcement which are compounded with each other, the modified thermoplastic resin matrix and the modified fiber reinforcement are bonded and connected through dynamic bonds with dynamic reversible interface interaction. Through construction of dynamic reversible interface interaction in the fiber-reinforced thermoplastic resin-based composite material, infiltration compounding and interface bonding between a fiber reinforcement and a high-viscosity thermoplastic resin melt can be enhanced, and interface debonding and total-value recycling of the fiber reinforcement in the composite material recycling process can be effectively promoted; therefore, the bottleneck problems of poor wettability in the forming process, low bonding fastness at a heterogeneous interface, insufficient mechanical properties, low waste recovery value and the like confronted by the development of the fiber-reinforced thermoplastic composite material are effectively solved.

The invention relates to the technical field of sheet conveying production, in particular to a continuous fiber reinforced thermoplastic composite sheet conveying production line which comprises two conveying frames, a conveying belt is arranged between the two conveying frames, and fixing plates are fixedly connected to the left portions of the upper ends of the two conveying frames. The upper ends of the two fixing plates are jointly and fixedly connected with a top plate. According to the continuous fiber reinforced thermoplastic composite sheet conveying production line, the continuous fiber reinforced thermoplastic composite sheet is extruded through the pressing rollers, bubbles possibly generated in the composite sheet in the thermoplastic process can be reduced, and therefore the compactness and structural integrity of the composite sheet are improved; and a spring is arranged in the extrusion mechanism, so that self-adaptive pressing of the composite sheets with different thicknesses can be realized, the equipment can quickly switch corresponding cold source or heat source types according to the materials, thicknesses or process requirements of the different composite sheets, and the adaptability of the production line to diversified production requirements is enhanced.

Embodiments relate to an enhanced method for building walls by primarily reducing the time for assembly. The design is for a molded multi-segment plastic composite construction block that interlocks horizontally, vertically and orthogonally with a clearance-fit, does not require mortar for structural integrity and is self-aligning. The blocks are molded out of natural-fiber reinforced thermoplastic composites with thermal expansion coefficient less than 0.0002 per degree Celsius and compression strength greater than 60 MPa.

The invention discloses a thermoplastic composite material double-laser laying and winding head device and a processing method. A torque motor is connected with a composite material tape reel; one end of the tension adjusting mechanism is connected with the composite tape reel, and the other end is connected with the pressure cylinder; the support is connected with the side surface of the tension adjusting mechanism 4; the re-conveying mechanism is fixed to the middle of the tension adjusting mechanism, the first laser head and the second laser head are fixed to the bottom of the tension adjusting mechanism, and the shearing mechanism is located between the re-conveying mechanism and the pressing mechanism. The re-conveying mechanism can be used for re-conveying the composite material strip to a proper position below the pressing mechanism after the composite material strip is cut off; the shearing mechanism is used for shearing the composite material strip when the composite material strip needs to pass through the jump point; the pressing mechanism attaches the composite material strip to the surface of a workpiece in a rolling mode, the shearing mechanism shears the composite material strip, and the composite material strip is laid and wound on the workpiece to form a base material; the pressing mechanism is used for pressing the composite material strip on the base material; the side face of the pressing mechanism is connected with a pressing roller cooling water faucet. According to the invention, the thermoplastic composite material is heated through double laser, so that the reliability of interlayer bonding of the composite material can be improved, the interlayer strength of the thermoplastic composite material is improved, and the laying and winding quality and efficiency of the thermoplastic composite material are improved.

The disclosure describes a device, method, and transfer apparatus for stamping thermoplastic composite blanks. The blanks may consist of laminated fibrous plies which may comprise continuous fibers in a thermoplastic polymer matrix. Supporting unidirectional fibers or holding tapes, pre-impregnated with polymer and extending beyond a shaping area's edges may be clamped in jaws, allowing the blank to be suspended and heated without sagging. The transfer system moves the blank between a heating station and a stamping station, where a punch and die may shape it while maintaining calibrated tension to reduce defects such as creasing or delamination. Advanced jaw mechanisms, including pivoting jaws with multiple clamping slots, enable differential tensioning of plies for precise forming of complex geometries. After stamping, excess fiber extensions may be trimmed and may be recycled. This approach eliminates the need for nonrecyclable polyimide films and improves process reliability for thick or heavy blanks.

Composites materials comprising continuous fibers and a polymer matrix including a thermoplastic polymer and a high aspect ratio filler are disclosed. Multilayer assemblies comprising the inventive composite materials are characterised by reduces micro-cracking. The invention further relates to articles incorporating the thermoplastic composites material.

The present invention discloses a basalt fiber reinforced thermoplastic composite material with electromagnetic wave shielding function and its preparation method. The composite material is prepared by melt blending basalt short fibers after surface modification and thermoplastic plastics in a certain proportion. The preparation method of the surface-modified basalt short fibers is as follows: The basalt fibers, surface lipophilized modified Fe3O4 nanoparticles, carbon nanotubes or graphene nanosheets, and dopamine that have undergone surface cleaning treatment are dispersed in a buffer solution for polymerization reaction, and a polydopamine / Fe3O4 nanoparticle composite coating layer is formed on the surface of the basalt fibers, and at the same time, carbon nanotubes or graphene nanosheets are adhered to its surface. The composite material of the present invention not only obtains more excellent mechanical strength, but also has electromagnetic wave shielding function at the same time.

In a method of using ultrasonic welding for fusion bonding of thermoplastic composites, an energy director is formed in place on a first thermoplastic substrate. The energy director can be protrusions arranged in a grid pattern over the entire weld region. The energy director can have protrusions of varying thicknesses to account for unevenness along the weld interface. Forming the energy director can be carried out by placing thermoplastic film on the first thermoplastic substrate, melting the thermoplastic film, and stamping the thermoplastic film with an energy director stamp. After the energy director is formed, the first thermoplastic substrate is ultrasonically welded to a second thermoplastic substrate with the energy director sandwiched between the first and second thermoplastic substrates.

The invention belongs to the technical field of carbon fiber composite materials, and particularly relates to a carbon fiber reinforced thermoplastic composite prepreg and a preparation method thereof. According to the carbon fiber reinforced thermoplastic composite prepreg prepared by the preparation method disclosed by the invention, a layer of carbon fiber fabric and thermoplastic resin films on two sides of the carbon fiber fabric form a laminated structure, and the carbon fiber fabric is modified, so that polydopamine films are formed on two sides of the carbon fiber fabric through impregnation. Through heating, pressurizing and ultrasonic vibration of the laminated structure, resin in the thermoplastic resin film is softened and melted, flows in the laminating direction and is mechanically interlocked with the carbon fiber fabric through part of polydopamine, meanwhile, the carbon fiber fabric is infiltrated by the resin, and the thermoplastic resin and the carbon fibers are uniformly distributed. Therefore, the carbon fiber can be relatively difficultly stripped from the thermoplastic resin, the bonding strength of the composite material can be improved, and the process for preparing the fiber-reinforced thermoplastic composite material prepreg by the method has the advantages of high efficiency and batch production.

The invention provides a middle-sized unmanned aerial vehicle structure and function integrated grating oil tank capable of being automatically and integrally formed and a forming method, and relates to the field of unmanned aerial vehicle structure design. The oil tank body is formed by integral compression molding of an upper skin and a lower skin, the grating separation layer is co-cured with the skins through insert injection molding by chopped carbon fiber reinforced thermoplastic resin to form honeycomb grids, and the oil inlet and outlet connector is an aluminum alloy flange and is fixed to the bottom of the oil tank through welding of aluminum alloy and thermoplastic composite materials. Based on the long and short fiber mixed integrated oil tank design and process technology, full-automatic integrated forming of the main bearing shell can be achieved, the oil tank skin guarantees the bearing capacity through the long continuous fiber composite material, the oil tank grating is made of the chopped fiber composite material, and the functions of sequential oil supply, overload resistance, shaking prevention and the like are achieved; and the number of oil tank parts is greatly reduced, and the potential of full-automatic manufacturing is achieved.

The invention relates to a composite heating element, a preparation method of the composite heating element and application of the composite heating element in thermoplastic composite material resistance welding, and belongs to the technical field of thermoplastic composite material welding. In order to solve the problem that the strength of a welding joint is reduced due to the fact that the heating temperature distribution of a welding area of a traditional heating element is not uniform and heterogeneous inclusions exist, the invention provides a composite heating element which comprises two layers of GO / PA66 composite reinforced films and a graphite heating film arranged between the two layers of GO / PA66 composite reinforced films. Uniform heat distribution of a heating area is realized by optimizing the structural design of the composite heating element; and the longitudinal bonding force of welding is remarkably improved through introduction of the graphene oxide. The composite heating element has the thermal expansion coefficient similar to that of a thermoplastic composite material matrix, the stress distribution of a welding joint is remarkably improved, the higher-quality welding effect is provided, and the composite heating element has wide industrial application prospects in the field of thermoplastic composite material welding.

The invention discloses a manufacturing and self-heating riveting method of a thermoplastic composite material and metal mixed structure rivet. According to the method, firstly, a thermoplastic composite material and metal mixed rivet is designed, and a process and mold design for preparing the metal and thermoplastic composite material mixed structure rivet through a two-step mold pressing method are provided. The added metal in the prepared rivet has high electromagnetic induction heating capacity, and in the riveting process, the rivet is heated to the working temperature through induction current and then pressed to complete press riveting connection. By means of the technology, the weight of the metal rivet can be obviously reduced, rapid self-heating riveting can be achieved, in addition, composite material hole edge damage possibly caused by machining can be filled through heating and melting of the thermoplastic composite material, meanwhile, abrasion and electrochemical corrosion between the rivet and a plate are avoided, and the service life of the rivet is prolonged. And the sealing performance and the shock and vibration resistance of the riveted joint are improved. In addition, after riveting is completed, reliable pier heads formed at the two ends of the rivet improve the connecting strength and reliability, and the rivet is suitable for complex working conditions.

The invention provides a preparation method of a thermoplastic resin suspension liquid for pulping-free impregnation of large-tow carbon fibers, and belongs to the field of production of thermoplastic composite materials. The suspension comprises thermoplastic resin powder, a surfactant, a functional additive and an organic solvent aqueous solution; wherein the mass ratio of a solid component to a liquid component in the suspension is 1: (2-10). The preparation method comprises the following steps: adding the surfactant and the functional additive into an aqueous solution of an organic solvent, and adjusting the pH value of the mixed solution to 6-10; then adding thermoplastic resin powder, and stirring to obtain a thermoplastic resin suspension; the prepared thermoplastic resin suspension is used for impregnating large-tow fibers to prepare the thermoplastic resin-based large-tow fiber prepreg. The suspension is good in standing stability, raw materials are easy to obtain, a composite material can be rapidly formed without surface sizing agent pretreatment removal of large-tow fibers, and the obtained composite fibers are good in mechanical property.

The invention provides a sizing carbon fiber as well as a preparation method and application thereof. The sizing carbon fiber comprises a carbon fiber tow and a polyimide sizing agent loaded on the surface of the carbon fiber tow, the polyimide sizing agent has a structural unit shown as a formula I. Polyimide with the same ether ketone structure as the polyaryletherketone resin is adopted as a sizing agent, so that the carbon fibers and the polyaryletherketone resin form firm interface bonding more easily, and sufficient infiltration of the polyaryletherketone resin on the carbon fibers in the automatic laying process is facilitated; the internal defects of the composite material obtained through automatic laying forming are reduced, and the mechanical property of the composite material is improved; and the polyimide sizing agent has good temperature resistance and is suitable for preparing a carbon fiber reinforced high-performance thermoplastic composite material.

The utility model discloses a thermoplastic composite material component laying device. The thermoplastic composite material component laying device comprises a movement system and a laying execution mechanism, the laying execution mechanism comprises a tension unwinding mechanism, a rolling mechanism and a heater; thermoplastic prepreg tows are output and laid by the tension unwinding mechanism according to certain guidance, the output thermoplastic prepreg tows are heated by the heater, and the laid thermoplastic prepreg tows are rolled and solidified by the rolling mechanism to form a thermoplastic composite component; the laying execution mechanism is connected with the motion system, and the laying execution mechanism is driven by the motion system to do multi-degree-of-freedom motion. The device has high action flexibility and high efficiency, and can realize high-efficiency and high-precision laying and forming work.

The present invention relates to the technical field of composite materials, and particularly relates to a preparation method of a carbon fiber felt reinforced composite material, comprising the following steps: S1. Surface ion etching treatment is respectively carried out on thermoplastic material fiber filaments and sized continuous carbon fiber yarns, and the treated thermoplastic material fiber filaments and the sized continuous carbon fiber yarns are woven to obtain a mixed woven plain fabric; S2. Using the mixed woven plain fabric as a base layer and carbon fiber pre-oxidized short fibers as fillers, a carbon fiber reinforced thermoplastic material composite felt sheet is obtained through needling treatment; S3. After the carbon fiber reinforced thermoplastic material composite felt sheet and a thermoplastic material film are alternately laminated and laid, hot pressing is carried out to form a carbon fiber felt reinforced composite material; The carbon fiber felt reinforced thermoplastic composite material prepared by the method of the present invention has high toughness and interfacial strength.

The invention relates to the technical field of thermoplastic composite material welding, in particular to a composite material continuous ultrasonic welding method based on an interface microstructure, which comprises the following steps: carrying out positioning treatment on the surface of a thermoplastic composite material to be welded, and selecting welding parameters according to the property of the thermoplastic composite material to be welded; a microstructure texture is introduced into a to-be-welded interface of the thermoplastic composite material, and the microstructure texture has parameterized geometric properties; a flexible and continuous energy conduction item is arranged between the microstructure texture and the substrate on the opposite side, and molten resin is in a super-infiltration state in the initial welding stage through the ultrasonic vibration effect; and welding is completed under the set welding parameter condition. The welding performance of the thermoplastic composite material is improved, and a feasible technical path is provided for rapid assembly of complex structures in the future.