2569 results about "Shape-memory alloy" patented technology

The invention discloses a dynamic compensation intelligent formwork real-time regulation and control method and system, and relates to the technical field of building intelligent control. According to the method, pulse signal sensing and cooperative compensation between nodes are realized by constructing a distributed neural unit network, and a three-level compensation mechanism is triggered when displacement or stress is detected to exceed a threshold value. A generative adversarial network is innovatively adopted to construct a virtual scene library to simulate extreme working conditions, a cross-scene migratable strategy library is generated through feature alignment, and intelligent strategy matching of a new construction site environment is realized. A full-structure rigidity field is dynamically generated based on an elastic mechanical model, a supporting arm rigidity switching path is optimized in combination with an ant colony algorithm, and directional dissipation of wind vibration energy is achieved through triangular rigid network construction. The system adopts a biological heuristic self-organizing algorithm to realize redundant network reconstruction when nodes fail, a supporting arm adopts a shape memory alloy and carbon fiber composite structure, and a micro strain sensor is integrated to realize directional release of corrosion stress. According to the method, the adaptive capacity of the formwork system under the complex working condition is effectively improved, and the structural failure rate is reduced through multi-modal compensation strategy fusion.

The invention provides a house waterproof maintenance system based on an intelligent detection and self-repairing technology, and the system comprises an intelligent sensing layer which is used for collecting multi-dimensional physical parameters of building waterproof key nodes in real time; the edge calculation analysis layer is used for performing fusion analysis and risk prediction on the perception data; the dynamic self-repairing execution layer is used for triggering a multi-stage repairing mechanism according to an analysis result; the cloud management layer is used for realizing visual management and control and strategy optimization of the whole system, and relates to the technical field of building waterproofing, the building state is monitored in real time through a multi-mode sensing network, water leakage risk prediction is realized in combination with an edge calculation algorithm, and collaborative repair of a microcapsule repair agent, a shape memory alloy grid and an electrodialysis module is triggered; the system remarkably improves the timeliness and reliability of waterproof maintenance, reduces the manual intervention cost, and is suitable for intelligent maintenance of residential buildings, industrial buildings and historical protection buildings.

A refrigeration system utilizing a torsional elastothermal effect of shape memory alloy fibers, the refrigeration system comprising: a) a torsional elastothermal refrigerator having a fluid inlet and two fluid outlets; the heat transfer fluid pipeline system comprises a refrigerator, a radiator, a three-way valve, a liquid storage buffer and a water pump, is provided with a motor, controls switching of cold and hot flow channels in pipeline circulation by controlling the three-way valve, and is connected with the torsion elastic heat refrigerator in the system; the heat exchange and storage device comprises but not limited to a spiral coil radiator made of copper pipes and a heat storage container, the spiral coil radiator and the heat storage container are both connected with the heat transfer fluid pipeline system, and the memory alloy fibers are arranged in the torsion elastic heat refrigerator. The system is based on a novel driving mode of a periodic distortion structure, and has the effects of high efficiency, low hysteresis and low driving stress.

The invention belongs to the technical field of solid-liquid phase change heat dissipation, and discloses a memory alloy-based phase change expansion buffer structure, which comprises an elastic structure, a supporting structure, a thin wall, a cavity, a flaring, an electronic device, a heat sink, fins, a connecting structure and a phase change material, the thin wall is made of shape memory alloy and separates the internal cavity and the external phase-change material, the internal cavity is communicated with the external environment through the flaring, and in the flying process of the aerospace vehicle, external airflow flows into the flaring to take away heat stored by the phase-change material continuously. Based on the shape memory function of the memory alloy, additional space expansion buffering can be provided for the phase change material when the temperature changes, and stress damage caused by phase change expansion is avoided. The memory alloy thin wall and the elastic supporting structure are combined, the structure is simple, no moving part exists, circulating work in the high-temperature environment and the low-temperature environment can be achieved, local hot spots caused by internal gap movement of the phase change material in the circulating phase change process are reduced, and heat transfer deterioration is avoided.

The invention relates to a robot system based on multi-mode perception cooperation and an autonomous navigation method, and the robot system comprises a main body frame which is internally integrated with a central processing unit; the multi-mode sensing module comprises a binocular vision camera, a pressure-sensitive touch array, a microphone array and a gas sensor and is used for collecting environmental data; the flexible joint mechanical arm is composed of at least three bionic joints connected in series, and a shape memory alloy driver and an air pressure feedback device are arranged in each joint. The edge computing unit is in communication connection with the central processing unit and used for processing sensing data in real time and generating action instructions, and the core problems that a traditional robot system is insufficient in sensing capacity in a complex environment, mechanical arm rigid-flexible control is unbalanced, and dynamic scene response lags are solved. And a high-adaptability and high-reliability solution is provided for industrial automation, dangerous environment inspection and other scenes.

The invention provides a bending-adjustable microcatheter with multi-section bending control, and belongs to the technical field of bending-adjustable microcatheters.The bending-adjustable microcatheter with the multi-section bending control comprises a catheter body, a driving assembly and a control assembly, and the catheter body is composed of seven flexible pipe sections which are connected with one another; the driving assembly comprises seven independent shape memory alloy drivers, and each shape memory alloy driver is connected with the outer side of the corresponding flexible pipe section. The control assembly comprises a power supply, a microprocessor and a temperature sensor, the power supply supplies power to the shape memory alloy drivers, the microprocessor controls the current of each shape memory alloy driver, and the temperature sensor monitors the temperature of each flexible pipe section in real time; the problems that the bendability of a traditional catheter is usually limited, the catheter can only be operated within a fixed angle range, the bending form of the catheter is fixed, and various surgical operation requirements cannot be perfectly met can be solved.

The invention belongs to the technical field of precision machining equipment, and discloses a partitioned and deformation-controllable precision polishing grinding head which comprises a partitioned base, a positioning block is arranged in the center of the lower portion of the partitioned base, at least one connecting rod assembly is arranged above the partitioned base, and the top end of each connecting rod assembly is connected with a curvature adjusting head. A flexible polishing head is arranged above the curvature adjusting head, a protective shell is arranged on the outer side of the connecting rod assembly, the flexible polishing head and the protective shell are connected through a grinding head frame, and the whole device is provided with a drive circuit. According to the precise polishing grinding head capable of being partitioned and deformed controllably, through the partitioned base and the independent shape memory alloy driver, the curvature radiuses of the center and the edge of the flexible polishing head are controlled, the edge pressure is optimized, stable contact rigidity and uniform pressure distribution are brought, and finer surface shape control is achieved; the shape memory alloy driver is a solid-state element and is matched with the transverse amplification connecting rod, and needed driving force and displacement can be achieved in a relatively compact space.

The invention discloses a braille point display device. According to the Braille point display, the shape memory alloy material is used as the lifting structure, and the lifting structure is controlled to deform under the power-on condition, so that the point display part is driven to extend or retract relative to the mounting main body. Compared with piezoelectric driving and electromagnetic driving equipment, the shape memory alloy material can adjust the deformation quantity through the power-on state, large deformation quantity can be generated through a small structural material, the size of a lifting structure does not need to be increased, the driving structure of the braille convex points is effectively simplified, the size of the equipment is reduced, and the production cost of the equipment is reduced. And meanwhile, the locking mechanism is arranged, so that the telescopic state of the point display part is kept, the situation that the lifting structure is always kept in a power-on state is avoided, and the power consumption of equipment is reduced.

The invention provides a NiTiNb shape memory alloy and a preparation method thereof, and the preparation method specifically comprises the following steps: (1) uniformly mixing a Ni source, a Ti source and a Nb source to obtain mixed powder; (2) carrying out cold mold compression molding on the mixed powder to obtain an alloy green body; and (3) the green body is sintered, and the NiTiNb shape memory alloy is obtained. According to the preparation method disclosed by the invention, the NiTiNb alloy with uniform components and high density can be prepared by introducing Nb source powder for sintering and regulating and controlling sintering temperature parameters, so that the strength of the NiTiNb alloy is improved to 1600 MPa or above, the density of the alloy is improved to 92%, the compression strength is higher than 2000 MPa, the fracture strain is higher than 30%, the 8% tensile recovery rate is higher than 50%, and the mechanical property of the alloy is greatly improved.

The invention relates to a non-pyrotechnic secondary satellite and rocket locking and separating device which comprises a shape memory alloy primary separating assembly, a pressing and releasing assembly and a turntable four-claw secondary clamping and separating assembly, and the shape memory alloy primary separating assembly is arranged in a box body of the pressing and releasing assembly; one end, extending out of the shell, of a grooving bolt shaft of the shape memory alloy first-stage separation assembly penetrates through a through hole of the separation block to be connected with a nut, and the shape memory alloy rod provides driving force for the shape memory alloy first-stage separation assembly to jointly form a first-stage unlocking mechanism; a clamping jaw guide groove of the rotary table four-jaw two-stage clamping and separating assembly is fixed to the bottom plate, a rotary table controls a clamping jaw set to be locked, and clamping jaws are connected with a separating block of the pressing and releasing assembly to jointly form a two-stage unlocking mechanism. When the device is locked, after being locked by the shape memory alloy first-stage separation assembly, the device is locked by the turntable four-claw second-stage clamping separation assembly; when the device is separated, the device is unlocked by the turntable four-claw secondary clamping and separating assembly, and then is unlocked by the shape memory alloy primary separating assembly.

The invention relates to the technical field of cables, and discloses an anti-torsional fatigue and corrosion-resistant wind power cable and a manufacturing process thereof, the anti-torsional fatigue and corrosion-resistant wind power cable comprises a three-phase cable core main body, a dynamic compensation anti-torsion layer, a multifunctional corrosion-resistant barrier layer and an outer sheath, the three-phase cable core main body comprises a stranded conductor, a filling inner layer and an insulating layer; the dynamic compensation anti-torsion layer comprises an incongruous spiral supporting layer and a shape memory alloy compensation layer, and the incongruous spiral supporting layer comprises aramid fiber bundles and a nickel-cobalt alloy wire woven mesh; the multifunctional anti-corrosion barrier layer is arranged on the outer side of the dynamic compensation anti-torsion layer and sequentially comprises an anti-corrosion barrier bottom layer, an anti-corrosion barrier middle layer and an anti-corrosion barrier bottom layer surface layer from inside to outside. Through the gradient composite structure design, the problem of failure of a traditional wind power cable under long-term dynamic load and severe environment is effectively solved, and the torsional fatigue resistance, the corrosion resistance and the environmental adaptability are remarkably improved.

The invention discloses an embedded fiber grating sensor self-calibration strain monitoring system and method.The system comprises a fiber grating sensor, an optical fiber demodulator and a stress buffering type self-calibration mechanism, and the fiber grating sensor is embedded into a propeller blade prefabricated mounting groove through a metal embedded part and a gradient modulus adhesive layer; the plurality of fiber grating sensors are symmetrically distributed in a propeller blade prefabricated mounting groove in pairs, and infrared rays of each pair of symmetrical fiber grating sensors are converged at the circle center of a propeller hub to form a dynamic reference point; the optical fiber demodulator is integrated on the propeller hub and is connected with the plurality of optical fiber grating sensors; the stress buffering type self-calibration mechanism integrates a double-shaft flexible hinge and a shape memory alloy, and interface stress buffering and fiber grating sensor position collaborative self-calibration are achieved. The interface stress is effectively reduced through the gradient modulus glue layer, and the shape memory alloy drives the double-shaft flexible hinge to efficiently correct the offset of the fiber grating sensor in real time and buffer the vibration.

The invention relates to a safe stoping process based on a weak rock mass condition, which comprises the following steps: S1, through three-dimensional geological modeling and crustal stress field measurement, dividing geological units and determining differentiated stope structure parameters; s2, layered stoping, wherein the stope advancing speed is dynamically adjusted according to the ground stress real-time monitoring data; s3, layered filling operation is implemented, a shape memory alloy wire mesh is preset in a filling body, and a grouting channel is reserved in the contact face of the filling body and the surrounding rock; according to the method, through a dynamic correlation model of crustal stress real-time monitoring and propelling speed, the crustal stress change rate is directly converted into a mining parameter adjustment instruction, and dynamic balance of mining strength and crustal stress release is achieved; multi-dimensional data such as ground stress, micro-seismic energy and displacement are collected in real time, data are fused through an algorithm, rock mass mechanical parameters are inverted, a numerical model is optimized, and regulation and control schemes such as stope advancing speed, supporting parameters and filling ratio are automatically generated based on a model prediction result.

The invention relates to an unmanned aerial vehicle system based on a flexible mechanical arm. The unmanned aerial vehicle system comprises the flexible mechanical arm and an unmanned aerial vehicle. The flexible mechanical arm comprises a plurality of body section modules and clamping jaw modules, and the adjacent body section modules are connected in series through supporting pipe columns. The body section module comprises a paper folding structure, a pneumatic module and a first shape memory alloy spring; each paper folding structure comprises a plurality of joints, and the multiple first shape memory alloy springs are arranged on the outer side of each paper folding structure; the clamping jaw module is arranged on the body section module at the tail end of the flexible mechanical arm; the unmanned aerial vehicle comprises a flight control system, and the flight control system is used for controlling the flight of the unmanned aerial vehicle and adjusting the working states of the segment module and the clamping jaw module. According to the method, real-time response can be made to key structure parameters such as load, rigidity, position and force control at the same time, the limitation of a traditional single task target is broken through, and the motion state of each joint can be automatically adjusted according to the actual working condition.

The invention provides a building steel structure engineering detection device based on a sensor, and relates to the field of building steel structure engineering detection. The detection device comprises a sectional type bionic mechanical arm which is formed by connecting at least six joint sections capable of being bent independently in series, and a pneumatic driving cavity and a shape memory alloy wire are arranged in each joint section; the self-tightening winding mechanism comprises a pre-tightening belt surrounding the outer wall of the mechanical arm and a pressure feedback unit; the multi-mode detection head is fixed at the tail end of the mechanical arm and is integrated with an eddy current sensor, an ultrasonic phased array probe and a high-resolution industrial camera; and the central control module is in signal connection with the mechanical arm and the multi-mode detection head, dynamically plans a winding path of the mechanical arm according to laser ranging data of the laser ranging module, and selectively starts the eddy current sensor or the industrial camera to perform cooperative detection based on an initial scanning result of the ultrasonic phased array probe. And the effects of self-adaption to complex morphology, synchronous completion of multi-type defect detection and environmental interference resistance are achieved.

The invention discloses a supporting device for pipeline construction. The supporting device is mainly composed of a pair of breast boards, a connecting rod, a bolt, a magnet and a safety cover plate. The soil retaining plate tightly abuts against the wall of the pipeline slotting, an inserting groove in the inner side is matched with an elastic pin to be preliminarily fixed to a clamping groove in the end of the connecting rod, then the soil retaining plate is further fastened through a second bolt hole corresponding to a first bolt hole and a bolt, spot welding is conducted on the contact portion through a shape memory alloy welding material, and the connecting rod is telescopic. The magnets are arranged in the containing cavities of the connecting rods and connected with the ends of the bolts in a magnetic attraction mode, the connecting stability is enhanced, the top of the breast board is covered with the safety cover plate, and the construction safety is guaranteed. The supporting device provided by the invention is ingenious in structural design, a sloping procedure is not needed, the stability is greatly improved by utilizing multiple connection combinations of bolts, spot welding and magnetic attraction, and meanwhile, the shape memory alloy welding material is combined with the unique structural design, so that rapid mounting and dismounting are realized, and the construction efficiency is effectively improved.

The invention discloses a modularized replaceable self-resetting energy consumption type bridge pier anti-collision system, and belongs to the technical field of bridge engineering structure safety. The system includes an annular rubber pad, an annularly disposed damper module, and a shape memory alloy (SMA) tow. The damper module comprises a cylinder body, high-viscosity fluid, a reset spring, a piston and a force transmission plate. The cylinder body is fixed to the pier in a surrounding mode through bolts and rubber pads, the inner wall of the cylinder body is connected with the piston through a reset spring, the piston rod end is hinged to the force transmission plates, and the SMA wire bundles are connected with the force transmission plates. When an external impact load acts on the force transmission plate, the fluid damper provides viscous energy consumption, and the SMA wire bundle, the spring and the rubber pad provide deformation energy consumption; after the collision is finished, the system can be reset to the initial position under the synergistic effect of the SMA wire bundle, the spring and the rubber pad. By means of the modular design, efficient energy consumption and self-resetting can be achieved; and meanwhile, a single damper can be quickly replaced after being damaged, so that the maintenance efficiency and the system recoverability are greatly improved.

The invention relates to the technical field of solar heat utilization, and discloses an electric energy conversion and power regulation and control method based on a solar heat exchange coupling system, which comprises the following steps: calculating the phase change latent heat release rate and pressure and temperature sensitivity of a working medium in real time through a nonlinear prediction model, and establishing a compensation factor to dynamically correct the fusion weight of temperature and pressure signals; the shape memory alloy runner is driven to adjust the branch angle in a self-adaptive mode within the range of 45-75 degrees; constructing an energy potential matching matrix of the temperature gradient of the heat storage module and the output voltage of the power generation system, and combining a pulse type energy release strategy to maintain power stability; and controlling adjacent flow channel branches to generate a phase difference based on pressure fluctuation spectrum characteristics to realize fluctuation offset. According to the method, through closed-loop control of thermodynamic parameter compensation and flow channel dynamic adjustment and space-time collaborative optimization of energy potential matching and pulse release, continuous and stable power generation under the intermittent irradiation condition is achieved, the overall energy efficiency of the system is improved, and operation is more stable.

The invention discloses flutter suppression equipment in continuous machining of long bars, and particularly relates to the technical field of flutter suppression, the flutter suppression equipment comprises a rack, a strip-shaped groove is formed in the inner wall of the top of the rack, a two-way threaded rod is connected to the inner wall of the middle of the strip-shaped groove through a bearing, and moving blocks are connected to the outer walls of the opposite positions of the two sides of the two-way threaded rod; connecting plates are fixedly connected to the outer walls of the tops of the moving blocks, connecting blocks are fixedly connected to the opposite sides of the two connecting plates, clamping plates are connected to the ends, away from the connecting plates, of the connecting blocks, heating resistance wires are embedded in the clamping plates, and the clamping plates are made of shape memory alloy. The surface of the clamping plate is connected with a vibration reduction composite layer. The vibration reduction composite layer plays a role in assisting flutter suppression and meanwhile carries out kinetic energy recovery work, through real-time online damping adjustment, flutter is effectively suppressed, certain electric energy is provided in cooperation with kinetic energy recovery, and the energy-saving effect is achieved.

The invention relates to the technical field of oil exploitation, and provides a shape memory alloy supporting buckle driving type plugging device. Comprising an oil well casing, an oil pipe is arranged in the oil well casing, a mounting base is fixedly arranged on the peripheral side of the oil pipe, and a plurality of corrosion-resistant high-temperature alloy sealing pieces are rotationally arranged on the mounting base; wherein each section of corrosion-resistant high-temperature alloy sealing part is provided with a shape memory alloy supporting buckle, and when the shape memory alloy supporting buckles deform, all the sections of corrosion-resistant high-temperature alloy sealing parts are attached to the inner wall of the oil well casing pipe to complete sealing. The anti-corrosion high-temperature alloy sealing piece has the beneficial effects that when the temperature reaches the phase change temperature of the shape memory alloy supporting buckle, due to the shape memory effect generated by phase change, the shape memory alloy supporting buckle restores and contracts to be in an initial linear shape, and therefore the anti-corrosion high-temperature alloy sealing piece loses support, and the sealing performance of the anti-corrosion high-temperature alloy sealing piece is improved. And the self-tightening state extends outwards to be tightly attached to the inner wall of the oil well casing, so that plugging is completed.

The invention discloses a kilometer deep well roadway toughness regulation and control supporting system and a dynamic design method, and belongs to the field of deep well roadway supporting. The supporting system comprises a multi-layer collaborative structure and an intelligent regulation and control module, the multi-layer collaborative structure sequentially comprises a shape memory alloy energy absorption layer used for resisting impact loads and a gradient pore foam metal buffer layer used for energy grading dissipation from inside to outside, and the multi-layer collaborative structure is connected with roadway surrounding rock in an anchoring mode through an anchor rod anchoring structure; the intelligent regulation and control module comprises a distributed optical fiber sensor array used for monitoring surrounding environment signals of surrounding rock in real time, an electrostriction driver used for regulating and controlling the rigidity of the multi-layer cooperative structure and a multi-channel data fusion terminal used for achieving underground and surface data transmission synchronization. By the adoption of the kilometer deep well roadway toughness regulation and control supporting system and the dynamic design method, the problems that a traditional supporting mode is too high in material rigidity, lacks dynamic regulation and control capacity and is insufficient in impact toughness can be solved.

The invention relates to a test bench for an impact test of a superelastic shape memory alloy (SMA) wire and a damper thereof, and aims to comprehensively evaluate the superelastic characteristic of the SMA wire under a dynamic impact load and the vibration reduction performance of the damper thereof. The test bed is mainly composed of an upper bottom plate, a shape memory alloy (SMA) wire clamping test unit, a main body frame unit, a steel wire rope, a pull rope displacement sensor, a lower bottom plate, an optical axis supporting seat, a lead screw sliding table, an adsorption release and stress application unit, an optical axis, an impact stress unit, an anti-collision plate and supporting foot cups. By adjusting the weight and the position of the weight disc and the compression amount of the stress application spring, the test bench can realize loading of different impact energy at different heights so as to simulate actual working conditions. Meanwhile, various sensors arranged on the test bench can capture impact force, displacement, resistance and deformation data in real time, and subsequent analysis and processing are facilitated. The test bench is suitable for the performance test in scientific research and engineering application of the shape memory alloy (SMA) wire and the damper thereof.

The invention relates to the technical field of underwater engineering, and discloses a steel pipe pile cofferdam and a cofferdam construction method.The steel pipe pile cofferdam comprises a plurality of steel pipe columns, the two sides of each steel pipe column are each provided with a first lock catch and a second lock catch which extend in the length direction of the steel pipe column, and steel pipe piles are buckled in pairs through the corresponding first lock catches and second lock catches; a sealing cavity is formed between the first lock catch and the second lock catch, and the sealing cavity is sequentially divided into a sealing cavity, an induction cavity and a grouting cavity from the outer side to the inner side of the cofferdam; the sealing cavity and the sensing cavity are separated through the elastic water stop lips, and shape memory alloy wires are arranged in the elastic water stop lips. The cofferdam has the beneficial effects that the first layer of sealing structure is formed by arranging the mechanical seal, then the second layer of sealing structure and the third layer of sealing structure are formed by the elastic water stop lip and the grouting area, and water located on the outer side of the cofferdam is prevented from entering the inner side of the cofferdam step by step through the three layers of sealing.

The invention discloses stainless steel vacuum barrel welding equipment and a welding method, and relates to the technical field of welding equipment.The stainless steel vacuum barrel welding equipment comprises a main body, a sealing door is slidably connected to one end of the main body, a limiting mechanism is arranged in the main body, two sets of electric push rods are arranged in the limiting mechanism, and fixing plates are fixed to the two sides of the top end of the limiting mechanism; two sets of metal plates are arranged at one end of the sealing door, the metal plates and the sealing door are elastically connected through a plurality of sets of springs, and a first U-shaped block is fixed to one end of each metal plate. A linear motor is started through a control panel to drive a limiting mechanism to move outwards, a linkage clamping mechanism and a rotary telescopic mechanism are synchronously expanded outwards, electron beam welding is started after an external vacuum pump establishes a vacuum environment, the equipment adopts inner and outer double-side force application to ensure uniform clamping, a shape memory alloy compensates a high-temperature sealing gap, and a spring realizes automatic reset; and sealing failure caused by deformation and thermal deformation of the thin-wall cylinder is effectively prevented.

The invention relates to the technical field of fasteners, in particular to a hardware connecting fastener with a buffer structure, which comprises a bolt cap and a screw, the bottom of the bolt cap is fixedly connected with the screw, the bottom end of the bolt cap is fixedly connected with a gasket, and the bottom of the screw is fixedly connected with a rotating plate. The bottom of the rotating plate is fixedly connected with a shape memory alloy, the bottom of the shape memory alloy is fixedly connected with a bottom plate, an anti-loosening mechanism is arranged in the screw rod, and a buffering mechanism is arranged in the screw rod. The anti-skid wire ensures stable connection, through buffering impact resistance, when the electronic product is vibrated, the buffer plate drives related parts, impact force is counteracted through the buffer spring, the impact resistance is improved, in addition, the buffer plate moves to drive the ejector rod to press the pressing rod, lubricating oil is extruded out to lubricate the screw rod, abrasion is reduced, and disassembly is convenient.

The invention relates to the technical field of aluminum-based composite materials, in particular to an intelligent temperature control self-repairing aluminum-based composite material and a preparation method of the intelligent temperature control self-repairing aluminum-based composite material. 5-15 parts of shape memory alloy microwires; 4.3 to 11.8 parts of epoxy resin prepreg containing microcapsules; wherein the epoxy resin prepreg containing microcapsules is composed of the following components: 3-8 parts of epoxy resin; 0.3 to 0.8 part of a curing agent; according to the invention, the advantages of a metal material, a composite material and an intelligent material are ingeniously combined. The aluminum alloy matrix provides excellent specific strength and specific stiffness, the shape memory alloy microwires endow the material with intelligent response capability, and the microcapsule system realizes a chemical repair function.

The invention relates to the technical field of electrofluid ink-jet printing, and particularly provides an electrofluid ink-jet printing system, which comprises an ink storage assembly, a printing assembly and a printing assembly, the metal spray head is made of shape memory alloy, and an ink flow channel is arranged in the metal spray head; the electric field generation assembly is arranged on one side of the metal nozzle; the heating assembly is arranged on one side of the metal nozzle; the image acquisition assembly is used for acquiring ink droplet image information including the ink droplets ejected by the metal nozzle; the controller is used for acquiring ink droplet edge characteristics according to the ink droplet image information, analyzing whether the metal nozzle is blocked or not according to the ink droplet edge characteristics, controlling the heating assembly to heat the output end of the metal nozzle when analyzing that the metal nozzle is blocked, and controlling the electric field generation assembly to enhance the electric field generated by the electric field generation assembly at the same time; the system can effectively solve the problem that the printing effect of follow-up electrofluid ink-jet printing is affected due to the fact that the spray head is damaged due to the fact that the voltage used for impacting blockages is too large.

The invention provides a unit cell structure design method and device based on nickel-titanium shape memory alloy, and relates to the technical field of intelligent materials and structures.The method includes the steps that relevant characteristic parameters of nickel-titanium alloy are collected, a mechanical property index, a thermal stability index and a reliability index are generated, and then a phase change temperature index is obtained through comprehensive calculation; and the phase change temperature threshold is corrected, the geometrical shape and the bonding mode of the unit cell structure are determined, and the quasi-zero-stiffness curved beam, the supporting frame and the connecting part of the unit cell structure are optimally designed in combination with the corrected phase change temperature threshold. According to the method, through characteristic parameter pretreatment, mechanical property index calculation and unit cell structure geometric optimization of the nickel-titanium shape memory alloy, the excellent performance under different phase change states is achieved, and the buffering energy absorption and low-frequency vibration isolation functions of the alloy are improved.

The invention relates to the technical field of seabed base adjusting platforms, and discloses a seabed base self-adaptive leveling device and method based on shape memory alloy, and the device comprises a seabed base observation platform which is used for bearing instruments and equipment; the leveling supporting legs are uniformly distributed below the seabed-based observation platform and are used for realizing shock isolation and shock absorption and full-automatic and high-reliability leveling after the seabed-based observation platform touches the bottom by utilizing the shape memory effect and the superelasticity of SMA (Shape Memory Alloy); and the universal joint connecting mechanism is used for connecting the leveling support leg with the foot pad so as to adapt to and support slopes with different angles. The shape memory effect and the hyperelasticity of SMA are utilized, under the condition that an external power source and a complex control system are not needed, full-automatic and high-reliability leveling after the platform touches the bottom is achieved, and the technical problems that according to an existing leveling scheme, limitation of different degrees exists in the aspects of structure complexity, environment adaptability, long-term reliability and leveling precision are solved.

The invention discloses a device for determining jointed rock sample crushing energy consumption in an SHPB test and a using method thereof.The device comprises a protection box, the protection box is cylindrical, a cavity is formed in the center of the protection box, holes connected with an incident bar and a transmission bar are formed in the front end and the rear end of the protection box correspondingly, the holes communicate with the cavity, and a plurality of mounting holes are formed in the peripheral face of the protection box in the circumferential direction; a rigid rod is slidably connected into the mounting hole, one end of the rigid rod is located in the cavity and arranged relative to the jointed rock sample, the other end of the rigid rod is located on the outer side of the protection box and connected with a shape memory alloy, one end of the shape memory alloy is connected with the peripheral face of the protection box, the heating device is connected with the protection box, and the 3D scanner and the infrared thermal imager are arranged relative to the protection box. In the process that the jointed rock sample is impacted, fragments impact the rigid rod to enable the shape memory alloy to deform, and meanwhile, the infrared thermal imager is adopted to obtain temperature change in the protection box, so that kinetic energy and dissipated heat energy of ejection of the fragments of the jointed rock sample can be accurately obtained.