282 results about "Universal testing machine" patented technology

The invention discloses a novel man-machine interaction video extensometer measurement system and a method thereof, and the method comprises the steps: installing a test workpiece on a universal testing machine, and installing and debugging an image collection device; starting the image acquisition equipment to acquire an initial reference image of the test workpiece, then starting the universal testing machine to load the test workpiece, and continuously acquiring a deformation image of the test workpiece in the loading process until the stretch rate of the test workpiece reaches a preset threshold value of the resistance strain gauge; and transmitting the acquired image to a video extensometer measurement system, calculating the transverse strain, the longitudinal strain and the Poisson's ratio of the test workpiece according to the displacement of the deformation point in the deformation image relative to the reference standard point in the initial reference image, and displaying the transverse strain, the longitudinal strain and the Poisson's ratio through a system interface. The device and the method can not only adapt to measurement of deformation and strain of objects of various sizes, but also reduce errors caused by out-of-plane displacement of the objects. Software and hardware are combined, and accurate and efficient measurement of the video extensometer is achieved.

The invention discloses an ultra-thin titanium plate electric auxiliary tension and compression cyclic loading device and a test method, the device comprises two outer side samples used in cooperation with an ultra-thin titanium plate sample, the two outer side samples are fixed on the two sides of the ultra-thin titanium plate sample, the two outer side samples and the ultra-thin titanium plate sample form a composite tension and compression sample, the ends of the ultra-thin titanium plate sample extend out of the ends of the outer side samples, and the outer side samples are fixed on the two sides of the ultra-thin titanium plate sample. The two sides of the composite tension and compression sample are fixed through the clamping assemblies and then are applied with lateral force; the two pairs of electric auxiliary clamps are clamped at the two ends of the composite tension and compression sample respectively, each pair of electric auxiliary clamps comprises two oppositely-arranged chucks, the clamping faces of the chucks are provided with conductive structures, the conductive structures are connected with an external power source, and when the composite tension and compression sample is clamped on the chucks, the conductive structures make contact with the composite tension and compression sample. The chuck is connected with the loading end part of the universal testing machine, and the ultrathin titanium plate sample can be prevented from being distorted and deformed in the testing process.

The invention relates to a method for testing the extrudability of an epoxy adhesive for prefabricated segment assembly, and belongs to the technical field of material testing. Comprising the following steps: S1, placing a sample preparation device at a specified test temperature for 24 hours; s2, placing the annular polytetrafluoroethylene mold coated with vaseline at the mark of the first circular polyester film, and filling the annular polytetrafluoroethylene mold with the splicing glue sample; s3, slowly and vertically lifting the polytetrafluoroethylene annular mold to obtain a complete cylindrical splicing glue extrudability to-be-tested sample; s4, immediately putting the sample to be tested and the polyester film on a steel bearing plate of a universal testing machine; s5, applying specified pressure to obtain a cake-shaped splicing glue sample; s6, measuring and calculating the extrudability of the splicing glue sample; and S7, repeating the steps, and taking an arithmetic mean value of the extrudability. The problems of accuracy and reliability in the testing process can be effectively solved.

The invention belongs to the field of metal high-temperature performance testing, and relates to a metal material high-temperature tensile testing device and testing method. The device comprises a synchronous control box, the synchronous control box is respectively connected with the electromagnetic valve, the universal testing machine, the infrared thermal imager and the three-dimensional digital image related equipment; the constant current source is respectively connected with the upper and lower parts of the high-temperature clamp; the high-temperature clamp is mounted in the universal testing machine and comprises an upper clamping part and a lower clamping part which are used for clamping a metal sample; the cooling pipeline is connected with the air compressor, and the electromagnetic valve is mounted on the cooling pipeline connected with the air compressor; during testing, speckles are sprayed on one surface, facing three-dimensional digital image related equipment, of a metal sample, and the metal sample is clamped in the middle of a high-temperature clamp; one end of the thermocouple is welded on the surface without speckles of the metal sample, and the other end of the thermocouple is connected to the constant current source and is connected to the synchronous control box. The problems that when a high-temperature extensometer is used for measuring sample deformation, the measuring range is insufficient, damage is prone to occurring, and additional interference is introduced are solved.

The invention provides a carbon fiber rod tension-bending-torsion coupling test device and method for a universal testing machine. The device is suitable for mechanical tests of tension-bending coupling, tension-torsion coupling and tension-bending-torsion coupling. The device comprises two stretching, bending and twisting clamping ends, a screw rod assembly and a support, the screw rod assembly is composed of a first transverse screw rod, a second transverse screw rod and a longitudinal screw rod, and the distance between the transverse screw rods and the position of a top block in the arch can be accurately controlled. The device has the advantages of comprehensiveness, accuracy, flexibility, convenience, stability, safety and the like, can comprehensively simulate complex stress conditions in actual work, improves the accuracy of test data, adapts to carbon fiber rods with different lengths and spans, simplifies the operation process, reduces test errors, ensures safe and reliable connection, and is suitable for popularization and application. And an innovative solution is provided for complex stress analysis of the carbon fiber rod.

The invention provides a device for testing the circumferential tensile stress and strain curve of a pipe. The device comprises a circumferential tensile sample, an upper buckle, a lower buckle, an upper D-shaped block, a lower D-shaped block and a connecting rod. The testing method comprises the following steps: uniformly spraying speckles on the outer surface of the reducing section of the annular tensile sample before testing, and measuring the strain in the linear length and width directions of the reducing section of the annular sample by using a three-dimensional full-field strain measurement and analysis system in the annular tensile process. Adjusting the position of the circumferential tensile sample, so that the included angle between the central line of the reducing section and the tensile direction is 30 degrees, and the infrared spots of the high-resolution camera are emitted to the middle upper part of the reducing section of the sample. And finally, starting the universal testing machine to stretch at a fixed speed. The method has the advantages that the circumferential tensile stress and strain curve of the pipe can be directly and accurately tested, and the method has important theoretical and practical significance for accurately constructing an anisotropic thin-wall pipe plastic constitutive model and realizing high-precision simulation of thin-wall tubular member forming.

The invention discloses a titanium alloy deformation behavior testing device and method, and relates to the technical field of material deformation testing, the titanium alloy deformation behavior testing device comprises a universal testing machine, a clamping module, an ultrasonic vibration module, an electric pulse excitation module and a cooperative control module, the clamping module comprises a ceramic chuck main body, and a conductive contact is arranged on the clamping surface of the ceramic chuck main body; the ultrasonic vibration module comprises an ultrasonic vibrator, and the ultrasonic vibrator is arranged on one side of the ceramic chuck body and used for applying an ultrasonic vibration signal to the titanium alloy sample; the electric pulse excitation module is connected with the conductive contact and is used for applying an electric pulse signal to the titanium alloy sample; the cooperative control module is connected with the clamping module, the ultrasonic vibration module and the electric pulse excitation module. According to the invention, synchronous loading of mechanical load, electric pulse and ultrasonic vibration can be realized, and the clamping module solves the problems of electric conduction, vibration transmission and interference resistance, so that the deformation behavior of the titanium alloy in the electro-acoustic composite field can be accurately and reliably tested.

The utility model discloses an improved pull-out test device based on an electronic universal testing machine, which comprises a pull-out device and a pull-out clamp which are arranged on the electronic universal testing machine, and a movable cross beam is arranged on the electronic universal testing machine; the upper end of the drawing clamp is fixed on the movable cross beam through a transverse bolt, the lower end of the drawing clamp is provided with a groove for mounting a drawing spindle, and the drawing spindle is positioned above the paving material; a groove is formed in the lower end of the drawing clamp and is used for fixing a drawing spindle; the drawing device comprises a drawing frame for placing a paving material, and the drawing frame is mounted in the electronic universal testing machine through a bulge fixing device; the drawing frame comprises an upper panel and a lower panel, an adjustable bolt is arranged between the upper panel and the lower panel, and the height of the upper panel and the height of the lower panel are adjusted through the adjustable bolt; and paving materials are placed on the lower panel.

The utility model provides an electronic universal testing machine, which relates to the field of performance testing equipment and comprises an electronic universal testing machine body, a pressure testing assembly is mounted on the electronic universal testing machine body and used for testing, and a supporting seat is arranged below the pressure testing assembly. A positioning plate capable of being adjusted front and back is arranged on the supporting base and used for positioning a workpiece. The positioning plate can realize accurate adjustment of the front-back position through the adjusting assembly, ensures that the workpiece can be accurately located under the pressure testing assembly, avoids uneven stress caused by position deviation of the workpiece, and improves the accuracy of a testing result. The clamping structure is connected with the positioning plate through the self-adaptive assembly, and the clamping position can be automatically adjusted according to workpieces of different sizes. The self-adaptive adjusting function can ensure that the workpiece does not displace in the left-right direction in the testing process and keeps stable, so that the force borne by the workpiece is uniformly distributed in the testing process, and the reliability of test data is ensured.

A transverse constraint stretching device for calibrating the elongation of geotechnical cloth comprises a clamping device and a fixing device, and the clamping device comprises an upper clamping device, a lower clamping device and a sliding rod; the fixing device comprises a sliding block, a needle plate and an ejector rod; the needle plate and the ejector rod are fixed on the sliding block; the sliding rod is fixed with the lower clamping device, the fixing device and the upper clamping device sequentially penetrate through the sliding rod and the sliding block and are uniformly distributed between the upper clamping device and the lower clamping device, and the upper clamping device and the lower clamping device are symmetrically arranged on the universal testing machine up and down. The upper side and the lower side of the geotechnical cloth are fixed to the upper clamping device and the lower clamping device respectively, and the left side and the right side of the geotechnical cloth are fixed to the needle plates of the fixing devices respectively. According to the utility model, the geotextile can be transversely restrained to prevent necking, and meanwhile, the extension change of the geotextile after being stretched can be accurately reflected by calibrating the distance between the two ejector rods, so that more accurate mechanical properties are obtained, and the production process of the geotextile is effectively guided.

The present invention belongs to the technical field of bolt shear force testing, and discloses a bolt limiting mechanism, a bolt shear test device and a method. The bolt limiting mechanism includes a support component and a limiting component, and the limiting component includes two limiting members, each support component is rotatably provided with a limiting member, and each limiting member is provided with at least two limiting holes with different apertures, and the two limiting members can overlap each other so that at least one group of limiting holes with the same aperture is aligned to pass the bolt. By rotating the two limiting members, the limiting holes with the same aperture can be aligned, and there is no need to replace the bolt limiting mechanism, which simplifies the operation steps and improves the efficiency of the bolt shear test. The bolt shear test device includes a universal testing machine and a bolt limiting mechanism, and the universal testing machine applies force to the support member to drive the two limiting members to apply shear force to the bolt, thereby improving the efficiency of the bolt shear test. The bolt shear test method adopts a bolt shear device to improve the efficiency of the bolt shear test.

1. The name of the design product: microcomputer control electronic universal testing machine (300KN). 2. The use of the design product: the design is used for testing the mechanical properties of various non-metals, metals and composite materials. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention belongs to the technical field of material testing, and discloses a connecting assembly of a high and low temperature test box universal testing machine, which comprises a bearing assembly, two clamping assemblies are arranged in the bearing assembly, the bearing assembly comprises a support frame, the support frame is connected with a test box, two partition plates are connected in the test box, and the two partition plates are arranged on the support frame. The test box is internally provided with a test cavity, the test cavity is located between the two partition plates, the two clamping assemblies move in the test cavity, and adaptation to test pieces of different specifications is achieved through cooperation of the multiple assemblies. A telescopic part in the bearing assembly can adjust the distance between the two clamping assemblies to meet the requirements of test pieces with different lengths; the restraining block of the clamping assembly slides along the sliding groove, and the diameter of the threaded cavity can be changed to adapt to test pieces with different diameters. Meanwhile, the tapping part can adjust tapping parameters according to the material of the test piece, and is matched with a constraint block pressure sensor for monitoring, so that the tapping effect of the high-hardness test piece is ensured, and stable clamping of the test pieces of various sizes and materials is realized.

The utility model discloses an electric servo control universal testing machine which comprises a base, a pressure detection table is arranged in the base, a supporting plate is arranged in the side direction of the base, and supporting frames are arranged at the two ends of the supporting plate. A downward pressing push plate is arranged on the inner side wall of the supporting plate, a first sliding rail and a second sliding rail are arranged on the side wall of the supporting frame from inside to outside, a first protection frame is arranged on the first sliding rail in a sliding mode, and a second protection frame is arranged on the second sliding rail in a sliding mode; the first protection frame and the second protection frame are arranged, and the sliding stroke of the second protection frame is higher than that of the first protection frame, so that scrap splashing caused by material crushing in the test process is effectively prevented. By means of the double-layer protection design, the risk of injury to surrounding equipment and workers can be greatly reduced, and the safety of the test process is improved. Splashed chippings have large kinetic energy and are prone to damaging a testing machine and other peripheral equipment.

The utility model relates to a 90-degree stripping assistive device which is installed on a testing machine and comprises a transverse sliding table, the left end and the right end of the transverse sliding table are connected with a left pressing plate and a right pressing plate respectively, the two pressing plates are both connected with compression bolts, a linear sliding rail is formed on the bottom face of the transverse sliding table and connected with a linear sliding block in a sliding mode, and the bottom of the linear sliding block is fixedly connected with an adapter through a sliding block base. The back face of the sliding block base is vertically connected with an installation support located between the universal testing machine and the transverse sliding table, a sample roller is rotationally installed on the installation support, a fixed pulley is rotationally installed on the front face of the sliding block base, and the lower end of the left pressing plate is connected with a pull rope which passes through the fixed pulley and is upwards connected with a movable cross beam of the testing machine through a pull rope buckle. The bottom of the movable cross beam is connected with a clamping mechanism for clamping one end of a sample through an S-shaped sensor. According to the utility model, the synchronous pull rope is adopted for traction, so that the self weight of the auxiliary tool is effectively eliminated, and the problem of unstable measured data caused by lagging overload detection is solved.

The invention discloses a device and method for testing the bonding performance of an embedded partition plate, and the method comprises the steps: driving a loading unit to move through an electronic universal testing machine, so as to drive a press-in unit which is detachably and fixedly connected with the loading unit to move, and enabling the press-in unit to be pressed into a honeycomb core material in the axial direction of the honeycomb core material; the method comprises the following steps: pressing a honeycomb core material into a press-in unit, driving the press-in unit to continuously apply a load to an embedded partition plate adhered to the interior of the honeycomb core material until the embedded partition plate is completely separated from the honeycomb core material, recording the maximum damage load borne by the embedded partition plate in the process, and calculating the adhesion performance parameters of the embedded partition plate and the honeycomb core material through the obtained maximum damage load, so that the adhesion performance parameters of the embedded partition plate and the honeycomb core material can be calculated. And the bonding effect of the embedded partition plate and the honeycomb core material can be effectively obtained through the bonding performance parameters, so that data support is provided for the design and preparation of a subsequent silencing structure.

This utility model discloses a device for testing the riveting strength of eccentric bolts, including a universal testing machine, a base, and a sleeve. The base is placed on the testing platform of the universal testing machine. The base has a threaded hole at its central axis for screwing in the shank of the eccentric bolt. The sleeve has a through hole for the head of the eccentric bolt to pass through. A gap is left between the inner wall of the through hole and the outer wall of the head of the eccentric bolt. After the sleeve passes through the head of the eccentric bolt, it contacts the washer of the eccentric bolt and applies vertical pressure to the washer of the eccentric bolt under the action of the loading head of the universal testing machine. The advantages are that it can quickly and accurately measure the riveting strength of bolts, is easy to operate, and provides reliable test data.

1. Name of the Design Product: Electronic Universal Testing Machine. 2. Use of the Design Product: Mainly used for tensile, compression, bending, shear, peeling, flexural strength, punch and puncture tests of new waterproof coiled materials, waterproof coatings, rubber materials, geotextiles, insulation boards, thermal insulation mortars, pipes or other materials, and can also be used for tensile property tests of small metal materials. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view. 5. The bottom surface of the Design Product is a part that is not easily seen or not seen during use, and the bottom view is omitted.

The invention discloses a device and method for testing the mechanical property of a high-temperature-resistant inclined coil spring, and relates to the technical field of hypersonic aircrafts, the device comprises a fixed support, a movable support and balls, and the inclined coil spring is arranged on the upper surface of the movable support; when an upper pressure head of the universal testing machine applies pressure to the inclined coil spring, static friction force between the inclined coil spring and the movable support is converted into static friction force and rolling friction force between the ball and the fixed support and between the ball and the movable support, and slippage of the inclined coil spring and the movable support is eliminated. The testing device is arranged in the heating furnace, the inclined coil spring can be heated through the heating furnace and maintained at the target temperature, and the mechanical property of the inclined coil spring can be effectively and accurately measured under the high-temperature condition.

The utility model discloses a dynamic calibration device for a universal testing machine, which belongs to the technical field of calibration and stabilization of the universal testing machine and is characterized in that loading blocks are mounted on the side parts of two ends of a standard force sensor, stabilizer bars are inserted into holes of the loading blocks, and lateral deviation of the standard force sensor is limited by the stabilizer bars; a limiting groove is formed in the side wall of the stabilizing rod, a connecting frame is installed in a hole of the additionally-installed block, a limiting wheel is installed in the connecting frame, the limiting wheel is embedded into the limiting groove, and stable movement of the standard force sensor is achieved through the limiting wheel and the limiting groove. The design of the positioning device and the guide structure ensures the calibration accuracy, the standard force sensor accurately measures the force, and the calibration accuracy is improved. The universal testing machine rack and the combination thereof provide stable support, and vibration and interference errors are reduced. The guide structure is installed at the corner, space is saved, and layout is optimized. The rubber gasket reduces vibration and noise, and the stress application handle ensures safe and smooth operation. The device is stable in design, easy to check and convenient to maintain.

The utility model relates to a friction performance testing device for uncured prepreg, which comprises a testing clamp and a heating insulation box, the heating insulation box is sleeved outside the testing clamp, the testing clamp comprises a base plate, two supporting plates, at least two sliding rods, a moving plate, a first clamping plate, a second clamping plate, a servo electric cylinder, a pull head and a flexible main pull plate, the two supporting plates are fixed to the two sides of the top face of the base plate. The at least two sliding rods are fixed between the two supporting plates; the movable plate is movably arranged on the sliding rod in a penetrating manner; the first clamping plate is fixed to the inner side face of one supporting plate. The second clamping plate is fixed to the side face of the movable plate. An output shaft of the servo electric cylinder is fixedly connected with the movable plate; the pull head is clamped and fixed through an upper chuck of the universal testing machine; one end of the flexible main pulling plate is located between the first clamping plate and the second clamping plate, and the other end is fixedly connected with the pulling head. According to the utility model, the prepreg can be uniformly heated, the normal pressure is constant, and an ideal environment is provided for experimental tests.

The application provides a controllable simple heating compensation device and a test block pressurization and temperature control experiment method, and relates to the technical field of material mechanics experiment equipment. The device takes a heating gun as a heat source, a temperature sensing magnet as a temperature measuring element, cooperates with a temperature control switch with a temperature interval setting to form a temperature control core, and is wrapped with a heat preservation device made of simple heat preservation materials around the pressurization end of a universal testing machine and a test block. Through temperature measurement feedback, the automatic start and stop of the heating gun is realized, the heat loss of the test block is reduced, and the test block is stably kept in the set temperature interval during the whole pressurization process. The application effectively solves the problems of easy temperature fluctuation of the test block and high cost of the existing temperature control device structure in the test block pressurization experiment of the universal testing machine. The overall structure of the device is extremely simple, convenient to install and low in cost, and can ensure the accuracy and reliability of the test block pressurization mechanics experiment data.

The invention relates to the technical field of soil detection, in particular to a device and method for detecting the adhesive force of soil on the soil touch metal surface of an agricultural machine. The device comprises a mounting shell and a sliding strip slidably connected with the mounting shell in the vertical direction, and the bottom end of the sliding strip is rotationally connected with a lower pressing plate; the rotating center line is perpendicular to the sliding direction of the sliding strip. A locking part used for limiting rotation of the lower pressing plate is arranged between the lower pressing plate and the sliding strip. A driving part for driving the sliding strip to slide is arranged in the mounting shell; the sliding strip is provided with a measuring part used for measuring tension and pressure in the length direction of the sliding strip. The bottom of the mounting shell is detachably and fixedly connected with a plurality of supporting legs in a vertical state. The problems that in the prior art, a universal testing machine is large in size, depends on a fixed power source and is difficult to transport to fields such as farmland for detection, and laboratory simulation soil is greatly different from an actual region are solved.

An embodiment of the present invention provides an optical film which has a stiffness index (STI) of 80 to 190, based on a thickness of 50 μm. The Stiff Index is calculated by expression 1 below: [Expression 1] STI=Shore D hardness×tensile modulus. In expression 1, “STI” denotes a stiffness index, the Shore D hardness is a hardness measured using a Shore D durometer, and the tensile modulus is a tensile modulus measured using a universal testing machine.

The utility model discloses a compression mode clamp structure of a universal testing machine, which comprises an upper connecting column and a lower connecting column, the bottom of the lower connecting column is fixed on the top surface of a base of the universal testing machine, and the top of the upper connecting column is fixed at the bottom of a force sensor mounted in the middle of the bottom surface of a lifting cross beam mounted in the middle of the universal testing machine. An upper pressing head connecting piece is installed at the bottom of the upper connecting column, an inserting hole extending upwards is formed in the middle of the bottom face of the upper pressing head connecting piece, and the pressing head is located under the upper pressing head connecting piece. The upper pressing head connecting piece is directly installed on the upper connecting column, the pressing head can be installed only by screwing the upper locking nut after the vertical rod is inserted into the upper pressing head connecting piece, when the pressing head is disassembled, the pressing head can be lowered and disassembled only by unscrewing the upper locking nut and pulling the two holding parts outwards, assembling and disassembling are convenient, the pressing head is convenient to replace, the replacement efficiency is high, and the cost is low. And test requirements are met.

The clamping device for the universal testing machine comprises a shell, a clamping mechanism, a first driving mechanism and a second driving mechanism, the second driving mechanism is arranged in the shell and connected with the clamping mechanism, the clamping mechanism is located at the top of the shell, the first driving mechanism penetrates through the side face of the shell and is movably connected with the second driving mechanism, and the second driving mechanism is movably connected with the clamping mechanism. The first driving mechanism is used for driving the second driving mechanism to rotate; the clamping mechanism comprises a fixing disc, a positioning ring and a clamping assembly, the fixing disc is installed on the upper surface of the shell, and the upper surface of the fixing disc protrudes to form the positioning ring; the second driving mechanism comprises a rotating column, a second bevel gear, a positioning mechanism and an extrusion assembly, and the rotating column is located in the shell and connected with the center of the fixing disc through the positioning mechanism. The clamping device for the universal testing machine can clamp a thin-walled tube more conveniently, and is simple in structure and convenient to operate.

This application relates to a hydraulic universal testing machine, belonging to the technical field of testing equipment. It includes an operating table with two crossbeams. Each of the two crossbeams has a clamping block on its opposite side. Multiple clamping blocks are arranged in a circle, with an inclined surface on the outer wall of each clamping block from the outside in. A reinforcing device is provided between the clamping block and the crossbeam. A clamping ring is circumferentially arranged around the periphery of each clamping block, sliding along the length of the inclined surface. A moving rod is fixedly connected to the side wall of the clamping ring away from the clamping block. A first cavity is formed on the surface of each crossbeam facing the moving rod. A lead screw is slidably connected within the first cavity. The end of the lead screw away from the first cavity is fixedly connected to the moving rod. A threaded sleeve is threadedly connected to the circumferential side wall of the lead screw, rotating between the threaded sleeve and the side wall of the crossbeam. This application facilitates experiments for operators.

A comprehensive performance testing device for a lattice structure under a heat-flow-force coupling working condition belongs to the field of lattice structure performance testing, and comprises a support frame, a heating workbench, a to-be-tested structure, an adjustable slide rail shell, a port sealer, an external pipeline system and a testing system. The heating workbench comprises a storage plate, an insulation rectangular shell, a heating pipe, an upper heating plate, a lower heating plate, a heat insulation plate, a variable alternating current power supply controller and a bottom frame. The port sealer comprises a cover plate, a spiral puller, an upper sealing block, a lower sealing block, a left sealing block, a right sealing block, a rectangular sealing strip, a square sealing ring, a hydraulic device and a sealing protection shell. The external pipeline system comprises an internal thread pipe joint, a connecting pipe, a vortex shedding flowmeter, a differential pressure meter, a hose and a water pump / fan; the testing system comprises a pressure head of the universal testing machine, a temperature sensing sheet, a thermocouple, a signal transmission line and a computer. An inlet end and an outlet end of a to-be-tested structure are sealed, a to-be-tested area is correctly placed, after a heating workbench heats the to-be-tested structure to a preset temperature, a pressure head of a universal testing machine applies pressure downwards, and liquid / air introduced by an external pipeline system cools the to-be-tested structure; then the comprehensive performance of the to-be-tested structure is obtained through data measured by the test system, then engineers are guided to optimize the structural design, the overall performance is improved, and the experimental device is provided for testing the comprehensive performance of the lattice structure under the multi-physics field coupling working condition.

The utility model relates to the field of plate metal part forming, in particular to an ultralow-temperature plate forming device. The upper top plate and the lower bottom plate which are oppositely arranged in parallel up and down are connected through a guide column, and the pressure sliding plate penetrates through the guide column and is in sliding fit with the guide column; a plate is installed between the female die and the blank holder which are vertically opposite, the female die and the blank holder are mechanically connected and are in clamping fit with a groove in the bottom of the female die base through a boss on the top of the female die, and the refrigerator and the thermal resistor are installed in reserved holes of the female die base respectively. The female die base is installed at the bottom of the female die base cushion plate which is installed at the bottom of the pressure sliding plate, and the force transmission base is installed at the top of the pressure sliding plate. The male die is installed on the top of the male die base, the male die base is fixed to the lower bottom plate through bolts, and the upper portion of the male die corresponds to a plate and the female die. The device is small in size, simple in structure, convenient to assemble and disassemble, high in production efficiency, energy-saving and low in cost, and can be extensively applied to the fields of universal testing machines, thermal simulation testing machines or other press machines and the like.

The invention discloses a thermal flow oxygen salt five-field combined cross-sea-area high-speed flight simulation working condition experimental testing device and method, and belongs to the field of material testing. The device is used in cooperation with a universal testing machine, a fan, an electromagnetic induction heating module, an oxygen supply module, a salt mist generation module, a temperature / deformation field measurement module and an environmental parameter measurement module are arranged inside and outside a high-speed airflow circulation loop, and a sample is loaded through the universal testing machine and placed in an experiment section in the high-speed airflow circulation loop. Wide-temperature-range closed-loop control of the temperature of the sample, construction of a comprehensive stress state and construction of a controllable high-speed airflow, adjustable oxygen concentration and salt mist concentration gas environment are realized, so that a real material application environment is simulated, and acquisition of data of a temperature field, a deformation field and an oxidation corrosion field of the sample can be completed in a reaction process; the problem that a cross-sea-area high-speed aircraft service condition environment full-state simulation test cannot be realized in the prior art is solved.