97 results about "Creep testing" patented technology

The invention discloses a high-temperature tensile creep testing device for a ceramic matrix composite material, and relates to the technical field of composite material performance tests.The technical scheme includes that the high-temperature tensile creep testing device comprises a testboard, a tensile shell is fixedly connected to the upper portion of the testboard, a servo motor is arranged in the tensile shell, and a worm is arranged at the output end of the servo motor; the worm is rotationally connected with the stretching shell, the worm is in meshed connection with a worm gear, the worm gear is rotationally connected with the stretching shell, the worm gear is fixedly connected with a transmission gear, the transmission gear is in meshed connection with a stretching rack, and the upper portion of the stretching rack is rotationally connected with two clamps. Due to the fact that a wedge-shaped structure is formed between the clamp and the clamping groove, the clamp can clamp inwards while moving downwards, the clamping force borne by the two sides of the ceramic matrix composite sample is increased along with increase of the tensile strength, and the slippage phenomenon caused by the fact that the tensile strength of the two sides of the ceramic matrix composite sample is improved is effectively avoided.

The invention belongs to the technical field of battery manufacturing and detection, and particularly relates to a lithium battery module hot-melt double-sided tape performance detection system, which comprises a dynamic hot-pressing bonding module, an environment simulation and isolation cavity, an in-situ microenvironment mechanical loading module, a multi-physics field coupling sensing and acquisition module and a central process control and data processing unit. The dynamic hot-pressing bonding module can accurately reproduce a temperature-pressure-time process curve; the environment simulation cavity realizes in-situ testing in a temperature field of-40 DEG C to 150 DEG C; the in-situ mechanical loading module supports 180-degree stripping, shearing and creep tests; the multi-physics field sensing module synchronously collects interface temperature, pressure distribution, force and displacement signals; and the central control unit realizes full-process automatic control and data analysis. Through the integrated design, the hot-pressing bonding and dynamic service environment can be integrally simulated, in-situ mechanical property characterization is carried out, and the performance of the adhesive tape in the whole life cycle of the lithium battery module is truly reflected.

A device for a creep test and a test system and a method using the device are provided. The device for the creep test includes a device frame, a test piece clamp, a load loading mechanism and linear displacement sensors. A test piece is arranged in a middle of the test piece clamp. A first end of the test piece clamp is a fixed end, a position of the fixed end is unchanged relative to the device frame. A second end of the test piece clamp is a movable end. The load loading mechanism includes a pulley block and a load. A system for a tensile and compressive creep test includes a box body which is sealable. The box body is provided with a box door which is provided with a constant temperature and humidity device. The device for the creep test is arranged in the box body.

The invention provides a high-temperature alloy bolt creep characteristic prediction method based on load fluctuation, and the method comprises the following steps: collecting extension data and tension data of a bolt test piece under target temperature and load, and obtaining a tensile curve and a tension curve; the extension data, the tension data, the tensile curve and the tension curve of the bolt test piece are processed, and load fluctuation and a true value used for calculating loss are determined; the load fluctuation, the cross section area of the test piece and the set load are input into a preset deep learning model, a prediction result is output, the prediction result comprises a prediction curve, and the prediction curve is used for representing the creep characteristic trend of the bolt. According to the method, the load fluctuation can be quickly measured by cheaper equipment, so that the use cost of the model in a prediction stage is remarkably reduced, the required training data is less, the creep curve of the thread test piece can be accurately predicted by training the creep test data of less test pieces, and the method is suitable for popularization and application. And the predicted curve is consistent with a true value in length and trend.

This invention relates to the field of creep testing technology, and discloses a clamping assembly for compression creep testing. The clamping assembly includes a fixed frame, a transmission component vertically slidably connected to the fixed frame, a sliding component connected to the fixed frame, a pressure-resistant shell having a first cavity, a push rod and a compression shaft vertically slidably connected to the pressure-resistant shell, and an abutment fixed to the compression shaft. The first end of the compression shaft passes through the pressure-resistant shell into the pressure-resistant cavity. One end of the push rod extends into the first cavity, and the other end is connected to the transmission component. The sliding component has a first inclined surface and a second inclined surface. The side wall of the transmission component has a third inclined surface that mates with the first inclined surface. The abutment has a fourth inclined surface that mates with the second inclined surface. When the transmission component presses down, it pushes the sliding component to move from a first position to a second position. This clamping assembly can simultaneously simulate a marine hydraulic environment and apply mechanical stress to the test block with a single operation. Furthermore, relying on mechanical limiting, it can achieve long-term stable maintenance of the marine hydraulic environment.

The application provides a cylinder type lifting atmospheric furnace sealing device for creep test and a cylinder type atmospheric furnace, which comprises an upper sealing assembly and a lower sealing assembly; the upper sealing assembly comprises a first high-temperature-resistant sealing piece and a first fixing piece, and the first fixing piece abuts the first high-temperature-resistant sealing piece against the top surface of the cylinder type atmospheric furnace; the lower sealing assembly comprises a second high-temperature-resistant sealing piece and a second fixing piece, the second high-temperature-resistant sealing piece comprises a first high-temperature-resistant sealing block and a second high-temperature-resistant sealing block, the second high-temperature-resistant sealing piece is configured to be sleeved on a lower pull rod and a creep extensometer which can slide, and the second fixing piece fixes the first high-temperature-resistant sealing block and the second high-temperature-resistant sealing block on the bottom surface of the cylinder type atmospheric furnace. The device can reduce the radiation heat dissipation and conduction heat dissipation of the cylinder type atmospheric furnace, avoid sealing failure caused by axial stretching and air flow disturbance during the test, ensure the uniformity of the temperature field in the furnace during the test, reduce energy consumption and burning loss of the test machine, and improve the test quality and efficiency.

The present invention relates to the field of mechanical property testing, and specifically discloses a high-temperature creep test fixture structure for a plate-shaped specimen, including a limit frame assembly, the limit frame assembly including a limit frame member, one side of the limit frame member is fixedly connected to a threaded rod, a limit slot is provided on the limit frame member, and a fixing pin is also fixedly connected to the upper middle position of the limit frame member; the limit slot is used to accommodate one end of the specimen, and the fixing pin is used to fix the specimen; the present invention can effectively prevent the end of the specimen from breaking through the cooperation of the limit slot and the fixing pin, and at the same time, the specimen can be firmly clamped, avoiding test errors caused by movement or deformation of the specimen during the test; the cooperation of the driving assembly and the clamping assembly realizes rapid fixation and release of the specimen, and the staff only needs to simply press the limit ring to release the limit on the specimen, thereby facilitating the placement and removal of the specimen.

The utility model belongs to the field of creep testing of viscoelastic materials, and particularly relates to a viscoelastic creep aging testing machine which comprises a frame body, a workpiece fixing end I and a workpiece fixing end II, the workpiece fixing end I and the workpiece fixing end II are oppositely arranged at the two ends of the frame body, and the workpiece fixing end II is movably arranged on the frame body by pulling a driving device. The workpiece fixing end I and the workpiece fixing end II are driven to be far away from each other, the workpiece fixing end I comprises a baffle and a free chuck, the baffle is arranged on the frame body, a limiting groove is formed in the baffle in the connecting line direction of the workpiece fixing end I and the workpiece fixing end II, and a clamping groove is formed in the free chuck. According to the utility model, the baffle plate and the free clamping head are combined, so that the size and the structure of the free clamping head can be conveniently replaced to adapt to the sizes and the structures of different tested samples, the clamping effect of the free clamping head is stable and reliable in the test process, and meanwhile, the clamping efficiency of the free clamping head is greatly improved. Tension can be further applied through the free chuck.

The utility model discloses a micro sample creep test device, which relates to the creep test field, and comprises a testing machine, the top of the testing machine is provided with an assembling component, the assembling component comprises two chucks, the middle part of the periphery of each chuck is provided with a convex rib, the two chucks are connected with a leading-out rod of the testing machine through the convex ribs, and the two chucks are connected with the leading-out rod of the testing machine through the convex ribs. A plane groove is formed in the top of the chuck, a groove is formed in the position, close to the top end, of one side of the plane groove, a fixing plate is installed on the outer side of the plane groove, two bolts penetrate through the outer side of the fixing plate and are connected and installed between the chuck and the fixing plate, the interior of the groove is used for clamping clamping blocks, and the two clamping blocks are used for being fixed to the two ends of a test piece; the problem that a small sample cannot be tested in an existing high-temperature lasting creep testing machine is solved, the assembling and deformation measuring mode of the small sample is achieved, the minimum size of the sample is remarkably optimized, and the range of raw materials and devices for material taking and sample preparation is greatly widened.

The present invention discloses an asphalt concrete flexural creep test device, which includes a flexural creep testing machine, a displacement sensor, a magnetic base, and a data acquisition system. The flexural creep testing machine includes a main body frame and a loading assembly. The present invention can measure the flexural stress, flexural deflection, flexural strain, creep compliance, creep stiffness, and strain rate of asphalt concrete, and analyze the adaptability of the asphalt concrete impervious panel in actual engineering to the settlement of the foundation or dam under the action of water load.

This invention provides a bidirectional prestressed concrete creep testing device and method, relating to the technical fields of concrete testing technology and long-term structural deformation monitoring. The device includes: a concrete slab specimen; multiple prestressing units, disposed on the concrete slab specimen and bonded integrally with it, orthogonally distributed in the horizontal plane and multi-layered in the thickness direction, for applying bidirectional prestress to the concrete slab specimen; a testing unit for monitoring changes in prestress, temperature, and humidity of the concrete slab specimen; a boundary protection unit disposed on the sidewall of the concrete slab specimen to block lateral heat and moisture exchange, ensuring that temperature and humidity within the concrete slab specimen are transmitted only along the thickness direction; and a support frame on which the concrete slab specimen is mounted for suspended support, allowing ambient air to flow freely across the upper and lower surfaces of the concrete slab specimen.

The invention discloses a set cement mold, a forming method and a temperature and humidity control creep test system, the mold comprises a first workpiece, a second workpiece, an upper cover, a lower cover and a core rod, the first workpiece and the second workpiece are both semicircular, the first workpiece is provided with a groove, the second workpiece is provided with a protrusion, and the upper cover is provided with a groove; the protrusion of the second workpiece is embedded in the groove of the first workpiece to form a hollow cylinder, the upper cover and the lower cover are connected to the upper end and the lower end of the hollow cylinder through threads, through holes are formed in the upper cover and the lower cover in a penetrating mode, the upper cover is provided with an opening used for injection, and the radius of the through holes is the same as that of the core rod. In order to accurately control the temperature and humidity of the environment where the test piece is located in the creep test, the creep test is carried out in the high-precision temperature and humidity control box, and in order to apply a creep load to the test piece in the test box, the small creep frame is designed; uniform and accurate control of the internal temperature and humidity process of the test piece in the macroscopic creep test process is realized.

The invention discloses a seawater environment creep test device and test system, and relates to the technical field of material testing, the seawater environment creep test device comprises a high-pressure environment test chamber and a creep test machine, the inner cavity of the high-pressure environment test chamber contains test liquid and a sample; a fixed part of the creep testing machine is fixed in a high-pressure environment test chamber, a piston part moves along a straight line relative to the fixed part, and a pressure balance cavity between the piston part and the fixed part is communicated with an inner cavity of the high-pressure environment test chamber; the test liquid in the pressure balance cavity applies acting force to the piston part, the test liquid in the inner cavity of the high-pressure environment test chamber applies acting force to the piston part, and the two acting forces are opposite in direction; therefore, when the piston part applies acting force to the sample, the piston part overcomes the liquid pressure in the high-pressure environment test chamber to be reduced or zero, the total pressure required to be applied by the piston part can be reduced, and the pressure applying precision can be improved.

The invention relates to a concrete tensile creep device which is characterized by comprising an upper loading steel plate and a lower loading steel plate, a concrete test piece mounting section is formed between the upper loading steel plate and the lower loading steel plate, and the concrete test piece mounting section is used for mounting a plurality of concrete loading samples; the force transmission supporting piece is connected with the upper loading steel plate and the lower loading steel plate at the same time; the loading connecting piece is arranged on at least one end of the upper loading steel plate and the lower loading steel plate, and a force sensor is arranged on the loading connecting piece; the loading device is used for providing opposite loading forces for the upper loading steel plate and the lower loading steel plate; detachable baffles are arranged at the two ends of the concrete sample mold in the length direction; and the concrete connecting piece is connected with the loading connecting piece and penetrates into the concrete sample. The problems that in the prior art, a concrete tensile creep testing device is inconvenient to install, the efficiency requirements of multiple groups of contrast tests cannot be met, and a sample mold is prone to damage are solved.

This application discloses a creep testing device for a fiber composite-steel interface. The device horizontally supports the specimen using a first support and a second support. A first loading mechanism applies a downward vertical force to the specimen, with the point of application located between the first end and a pre-fabricated crack. A second loading mechanism applies a downward vertical force to the specimen, with the point of application located between the second end and the pre-fabricated crack. The fiber composite-steel beam interface of the specimen primarily bears Type II interfacial shear stress caused by bending deformation, while the Type I peel stress approaches zero. This avoids the combined stress-shear + peel stress generated by direct tension in traditional lap joints, enabling the test results to accurately reflect the interface's durability under pure shear.

The utility model discloses a shear creep test loading device which comprises a supporting bottom plate, two steel stand columns, a steel beam, a test piece fixing rear steel plate, a test piece fixing front steel plate and a loading mechanism, the two steel stand columns are installed on the supporting bottom plate, and the upper ends of the two steel stand columns are connected through the steel beam. The front end face of the steel beam is fixedly connected with a test piece fixing rear steel plate, the front end of the test piece fixing rear steel plate is connected with a test piece, the front end of the test piece is connected with a test piece fixing front steel plate, the test piece fixing front steel plate is connected with a loading mechanism, and the loading mechanism is used for applying shearing force to the test piece. According to the utility model, the shear creep test environment of the sandwich layer of the composite material is simulated, and the loading mechanism is adopted to directly apply shear force on the test surface of the test piece, so that the problems that the shear creep test loading of the sandwich layer is difficult, and shear creep performance data can only be obtained through an indirect way are solved; and the shear creep performance of a plurality of test pieces can be respectively and independently tested at the same time.

The invention discloses a biaxial creep test tensile fixture system and a method for implementing biaxial creep, and relates to the technical field of mechanical property testing of high-temperature materials, the fixture system comprises two groups of fixture assemblies which are oppositely and symmetrically arranged and are used for being connected with a biaxial creep testing machine; each clamp assembly comprises an outer chuck, one end of the outer chuck is provided with an external thread used for being connected with a pull rod of a testing machine, and the outer chuck is provided with a clamping hole used for clamping the outer tube wall of a tubular sample; the inner chuck is partially arranged in the outer chuck, and the inner chuck is provided with a cylindrical clamping surface which abuts against and clamps the inner tube wall of the tubular sample; a gas flow channel penetrating into the tubular sample is arranged in the inner chuck; the sliding ring is arranged outside the inner chuck in a sleeving mode and can freely slide in the axial direction of the sliding ring. According to the invention, a mode of combining threaded connection and cylindrical surface clamping is adopted, so that the clamping reliability is ensured, and the sample is convenient to assemble and disassemble.

The invention provides a large-size coarse particle true triaxial creep test monitoring method and system, and relates to the technical field of triaxial creep tests.The method comprises the steps that a sample is subjected to a creep test; acquiring displacement data, acoustic emission data and ultrasonic data in the creep test process, wherein the displacement data is used for generating an overall deformation diagram of the sample; constructing a sound source objective function based on the sound emission data; performing optimization iteration on the sound source position through the sound source objective function and the sound emission data, and obtaining a crack propagation path in the sample by combining the optimal sound source coordinates at all moments; acquiring the seepage condition in the sample through the ultrasonic data to obtain a seepage path and a seepage speed in the sample; and taking the sample overall deformation diagram, the crack propagation path, the seepage path and the seepage velocity as monitoring results of the sample creep test. The invention solves the problem that the existing monitoring technology is difficult to reflect the real state of the sample in different stages of the creep test.

The utility model discloses a dental diaphragm tensile creep test device, which comprises a support assembly, a tensile force application assembly, a displacement measurement assembly, a sample fixing assembly and an environment simulation assembly, the tensile force application assembly is connected with the sample fixing assembly, and the tensile force application assembly and the sample fixing assembly are installed on the support assembly; the tensile force application assembly is used for applying a constant tensile force to a to-be-tested sample in the same testing process; the sample fixing assembly is fixedly connected with two ends of a sample to be tested, and comprises a fixed end and a movable end connected with the tensile force application assembly; the displacement measurement assembly is used for measuring the displacement of the to-be-tested sample in the stretching direction when the stretching force application assembly applies the tensile force; the environment simulation assembly comprises a containing box used for containing a liquid medium and a temperature control module used for controlling the temperature of the liquid medium, and during testing, a sample to be tested is completely immersed in the liquid medium in the containing box.

The present invention provides a test method for the maximum wall thickness reduction of the heating surface during the safe operation of a power station boiler. For the selected test components, actual operating condition parameters are collected (the main data collected are temperature and pressure), and this data is used as the parameters of the experiment. The temperature and tensile force of the creep testing machine are precisely controlled by a computer to conduct variable parameter creep performance tests. Multiple specimens with different wall thickness reductions are processed for the test. Based on the specimen with a 30% wall thickness reduction, the creep test time is selected as 6 months (4320 hours). After the test, high-temperature tensile tests are conducted on all specimens to obtain the yield strength and tensile strength of each specimen, and a comparison curve is established. The wall thickness reduction at the intersection point between the parameter specimen and the 30% wall thickness reduction specimen is used as the replacement standard to guide the use and replacement of materials.

The present invention discloses a soft rock creep test system and method based on the action of periodic dynamic loads. The system includes a test data acquisition and normalization unit, a downhole formation physical and mechanical property parameter feature extraction unit, a periodic dynamic load action clustering unit, a soft rock creep safety test unit, and a soft rock creep parameter update unit, which can achieve the integration of test data at different temperatures in the downhole formation of a drilling platform, the analysis of the physical and mechanical property parameters and mining difficulty of the downhole formation, so as to complete the test of soft rock creep. The present invention can form a feature extraction scheme for the physical and mechanical property parameters of the downhole formation of a general drilling platform, realize the management of the physical and mechanical property parameters of the downhole formation under the action of periodic dynamic loads at different mining depths, the soft rock creep test and evaluation capabilities of the system, ensure the soft rock creep test efficiency of the high drilling platform downhole formation, and improve the safety of downhole mining of the drilling platform.

This invention provides a compression creep testing apparatus and method for simulating a marine environment. The compression creep testing apparatus includes a testing machine and a marine environment simulation chamber. An upper pressure plate is located at the top of the testing machine, and a lower pressure plate is located at the bottom. The distance between the upper and lower pressure plates is adjustable, forming a compression clamp for the compression creep testing apparatus. The marine environment simulation chamber is located between the upper and lower pressure plates, and contains the test sample and seawater. The upper end of the sample extends beyond and is sealed to the upper surface of the marine environment simulation chamber, and the lower end extends beyond and is sealed to the lower surface. The lower pressure plate is connected to a deformation measuring element. The marine environment simulation chamber provides a seawater immersion environment for the sample, and the sample is positioned between the upper and lower pressure plates. The compression clamp applies force to the sample, thereby better simulating the compression creep conditions of a marine environment.

The invention relates to the technical field of material viscoelasticity testing, and provides an instrument and a method for accurately testing viscoelasticity parameters of an optical glass material. The invention comprises: a frame; the working cavity comprises a closed cavity body, heating pieces arranged at the periphery of the closed cavity body, a sample bracket and a force sensor; the sample bracket and the force sensor are arranged in the closed cavity; the force module comprises a lifting support, an electromagnetic inductor, a lower pressing block and a pressure ejector rod. The lower pressing block is arranged on the side, provided with the electromagnetic inductor, of the lifting support in parallel. The lifting support can lift up and down to drive the pressure ejector rod to make contact with a sample, and the electromagnetic inductor can provide downward step force for the lower pressing block and the pressure ejector rod after being powered on. The displacement detection assembly comprises a displacement sensor used for monitoring axial deformation of the sample after the sample is stressed. According to the invention, ideal step force can be realized, and more ideal creep test load conditions can be met; the acquisition of ideal viscoelastic creep data is ensured, and the test accuracy is improved.

1. Name of the product in this design: Electronic Creep Duration Tester (Integrated Type). 2. Purpose of this design: This design is used to test the creep, durability, and relaxation of metallic and non-metallic materials under high temperature conditions, and to develop and verify the performance of metallic and non-metallic materials under high temperature and high pressure. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to a compression creep test tool and a creep test machine. The compression creep test tool comprises a first tool, a second tool and a fixing piece, the first tool is connected with a first stretching end of the creep testing machine, a compression channel is arranged in the first tool, the compression channel extends in the axial direction of the first tool and penetrates through one end of the first tool, the second tool is connected with a second stretching end of the creep testing machine, a containing cavity is formed in the second tool, and the containing cavity is suitable for containing a metal sample; the fixing piece penetrates through the containing cavity and the compression channel in the first direction, the fixing piece and the first tool are relatively fixed, the second tool is in sliding fit with the compression channel in the axial direction of the first tool, one end of the metal sample abuts against the wall face of the containing cavity, and the other end of the metal sample abuts against the fixing piece. The compression creep test tool disclosed by the utility model can be applied to a tensile creep test machine, can be used for carrying out a compression test on a metal material, and is beneficial to expanding the application range of the test machine.

The invention discloses a three-stage step type nanoindentation creep test indenter and a preparation method thereof. A working part of the pressure head body is composed of three platform-shaped steps which are sequentially distributed in the direction of a central axis, the cross sectional areas of the three platform-shaped steps are increased in a stepped mode, the overall outline of the pressure head body is in a triangular pyramid shape, the surface of the pressure head body is an sp3 hybrid diamond crystal surface subjected to low-temperature catalytic molten salt etching treatment and without an amorphous carbon damage layer, and the curvature radius of the tip of the first step is smaller than 10 nm; the preparation method comprises the following steps: processing a blank by using a focused ion beam; performing pre-passivation to form a tungsten-containing solid precursor film; immersing into low-temperature molten salt containing a vanadium catalyst for reaction; and finally quenching and cleaning. According to the method, through a catalytic cooling and adsorption shielding cooperation mechanism, the sharp point sharpness is effectively kept while an amorphous carbon damaged layer is removed, parasitic creep interference caused by an amorphous layer is eliminated, and cross-scale graded high-precision testing is achieved.

This invention provides a bamboo bending creep testing device, belonging to the technical field of bamboo testing devices. The bamboo bending creep testing device includes a frame assembly, a clamp, and a loading assembly. The frame assembly is configured to support both ends of the bamboo along its extension direction. The clamp is disposed on the outer periphery of the bamboo, and has a clamping groove on its surface near the bamboo. The clamping groove is arranged along the extension direction of the bamboo and is configured to accommodate a portion of the bamboo, thereby increasing the clamping area between the clamp and the bamboo. The loading assembly includes a ring and a gravity member. The gravity member is vertically positioned below the bamboo, and the upper part of the ring is fitted onto the clamp, while the lower part of the ring is fitted onto the gravity member, allowing the loading assembly to apply a load to the bamboo through the clamp. This bamboo bending creep testing device improves the testing accuracy of bamboo bending creep tests.

The utility model provides a temperature control device of a vacuum high-temperature creep testing machine, which relates to the technical field of control devices and comprises a base, a connecting block A is mounted at the top end of the base, a fixing rod is mounted at the top end of the base, a top plate is mounted at the top end of the fixing rod, and a mounting plate is mounted in the middle of the top plate. And a motor is mounted at the top end of the mounting plate, a threaded rod is mounted at the output end of the motor, a rotating rod is arranged on the surface of the threaded rod, and a connecting block B is mounted at the bottom end of the rotating rod. A better using effect is achieved, and the accuracy and stability of temperature adjustment are improved. The motor drives the threaded rod to rotate and drives the rotating rod to move up and down, so that the position of the heating plate is accurately adjusted, and fine control over the sample temperature is achieved. The design of the sliding sleeve and the screw allows a user to flexibly adjust the position of the pressure pad according to experimental requirements, so that the sample is uniformly heated, and the problem of local overheating or non-uniform cooling is avoided.

The present invention discloses a fixture and method for testing the tensile shear creep of adhesives by a cross method, and belongs to the field of adhesive shear creep testing. The present invention uses a U-shaped first clamping plate with two J-shaped hook grooves at one end, and a rectangular second clamping plate with a J-shaped hook groove at one end to form a fixture, and effectively fixes the cross-cross specimen in the fixture. The present invention can fix the cross-cross specimen, use tensile load to perform shear creep testing, eliminate the rotation of the test piece caused by the traction of the adhesive layer, so as to more accurately measure the shear creep performance of the adhesive, and can be applied to test pieces with different adhesive layer thicknesses, without the need to prepare fixtures of different specifications, thereby reducing the test cost and improving the test efficiency.

The invention discloses a biaxial tensile compression creep test device and method in a seawater environment. The device comprises a biaxial base, a power assembly, a seawater environment simulation bin, a seawater circulation system and a strain measurement module, the power assembly comprises a direct-current servo motor, and the end of the direct-current servo motor is connected with a clamp. The seawater environment simulation bin is provided with an observation window and a clamp opening, the clamp penetrates through the clamp opening, and the clamping end of the clamp is located in the seawater environment simulation bin; and the seawater environment simulation cabin is communicated with the seawater circulation system. In order to solve the problem that existing material biaxial mechanical property testing devices are not provided with seawater corrosion environment simulation bins, a seawater environment simulation bin which can be used in cooperation with a biaxial testing machine is additionally arranged, and a three-dimensional DIC system for light path correction is adopted in order to solve the problem that errors are caused to DIC measurement by multiple layers of media such as air, an observation window and seawater.