171 results about "Scientific instrument" patented technology

The invention relates to a material in-situ detection device and method under multi-load multi-physical-field coupling service conditions, and belongs to the field of precise scientific instruments. The material in-situ detection device is composed of a precise six-degrees-of-freedom composite load loading module, a precise torsion module, a precise indentation module, a clamp module and a control module which work together to complete a composite-load multi-physical-field coupling experiment, a digital speckle strain measurement and infrared thermal imaging module and a microscope observation module are integrated, and in-situ observation and quantitative characterization are carried out on material deformation behaviors and damage mechanism phenomena in a composite-load multi-physical-field loading process. The device and the method have the advantages that the composite-load loading can be realized, and a novel loading method such as 'cantilever type pure bending, cantilever type tensile / compression-torsion, and cantilever type bending-torsion' is carried out. Silicon nitride ceramic heating sheets, Peltier tiles and current loading are used for achieving simulation of cold / hot-electricity and other multiple physical fields, and an improvement innovative experimental testing method is provided for material micromechanical property tests close to the serving conditions.

The invention relates to a combined load mode mechanical-electrical and thermal-magnetic coupling material performance in-situ test instrument and method, and belongs to the field of precise scientific instruments. The test instrument comprises three parts: namely a combined load-multi-physical field loading test platform, an in-situ monitoring platform and a vibration-isolating base, wherein the vibration-isolating base is mainly used for supporting the combined load-multi-physical field loading test platform and the in-situ monitoring platform, and provides a positioning service for installation of the platforms and effective vibration isolating treatment for various precise driving loading elements, detecting elements and in-situ monitoring elements; the in-situ monitoring platform realizes real-time dynamic and in-situ monitoring on micro deformation, injury mechanism, microstructure changes and property evolution of a material sample under the combined load condition by precisely adjusting the position and posture of various monitoring modules. The combined load mode mechanical-electrical and thermal-magnetic coupling material performance in-situ test instrument has the following advantages: the structure is miniaturized and lightened in weight, and the instrument body can be placed in an optionally equipped vacuum cavity, so that testing environments like low pressure, vacuum and inert gases can be provided for the material sample to be tested, and the practicability is high.

The invention relates to a nanoindentation / cutting test device and belongs to the field of electromechanical integration precise scientific instruments. The nanoindentation / cutting test device comprises an X / Y precise positioning platform, a Z-axis macro-motion adjusting mechanism, a precise indentation driving unit, a load signal detection unit and a displacement signal detection unit, wherein the X / Y precise positioning platform is connected with a coarse adjustment mechanism III15 through a connection plate I2, the adjustment mechanism III15 is fixed on a base 1, and a loading platform 8 is connected with the X / Y precise positioning platform through a force sensor 8; and the precise indentation driving unit is fixed on a side plate I3 through the Z-axis macro-motion adjusting mechanism, and the side plate I3 is fixed on the base 1; and the displacement signal detection unit is fixed on the base 1 through a side plate II14. The nanoindentation / cutting test device has the technical effects of compact structure and small volume. The nanoindentation / cutting test device can be used for realizing the mechanical property test of the three-dimensional test piece of which the characteristic dimension is above the millimeter level (the maximum dimension is up to 20mm*20mm*10mm); and the displacement loading resolution reaches the nanometer level and the loading force resolution reaches the micro-Newton level.

The invention relates to a material micro-mechanical property biaxial tension-fatigue test system and a test method thereof, and belongs to the field of precise scientific instruments. The test method is characterized in that orthogonal tensile load is applied to a test piece to make two mutually vertical tensions exist in one plane, and fatigue load can also be applied to the test piece on the basis of the tensile load in order to research the micro-mechanical properties of a material under different load forms and load sizes. The system is composed of a precise loading-transmitting unit, a fatigue unit, a mechanics and deformation signal detection unit, and a test piece clamping unit. The test system has the advantages of novel and compact structure, respective realization of uniaxial tension test, biaxial tension test, uniaxial tension-fatigue test and biaxial tension-fatigue test, good compatibility with an optical microscope, and dynamic research of the relationship between the microstructure of the material and the deformation damage mechanism under tension-fatigue load conditions.

The invention relates to an in-situ micro-nano indentation / scratch test platform and a test method, and belongs to the field of electromechanical integrated precision scientific instruments. An X axis precision scratch unit and a Y axis large-stroke stick-slip drive scratch assembly are assembled at the tail of a base, a Z axis macro-movement adjusting mechanism is assembled at the middle of the base, a motor driving unit is assembled at the head of the base, a precision pressing driving and displacement signal detecting unit is installed on the Z axis macro-movement adjusting mechanism, and a precision three-axis force sensor used for detecting an indentation pressing force and a normal force and a tangential force of a scratch is installed on the X axis precision scratch unit. The in-situ micro-nano indentation / scratch test platform has the advantages of compact structure, miniaturization, integration, and capability of better ensuring the assembly precision, effectively improving the overall rigidity and dynamic properties and improving the overall test precision while overcoming the defect that an existing test platform cannot be used for quantitatively detecting the normal force and the tangential force in a scratch process.

The invention relates to a high-temperature double-axis synchronous drawing mechanical property testing instrument and method and belongs to the field of precision scientific instruments. According to the device provided by the invention, three bevel gears, which are mutually orthogonal, are driven by one alternating current servo motor, so that equal-speed synchronous drawing of X axis and Y axis is realized, and non-equal-speed synchronous drawing of the X axis and the Y axis is realized; and single-axis drawing along an X-axis direction also can be realized. A high-temperature heating furnace is provided with an optical window and can be integrated with an optical microscope; and dynamic in-situ monitoring of micro-mechanical behaviors and an injury mechanism in a material temperature-varying drawing testing process is realized. By adopting a novel innovative structure, the difficulty that synchronous loading is difficult to realize through double-axis drawing is effectively overcome; meanwhile, the high-temperature double-axis synchronous drawing mechanical property testing instrument also has functions of the non-equal-speed synchronous drawing, the single-axis drawing and the like, and has the advantages of compact structure, small occupied area, convenience for integration and control and good application prospect; and the high-temperature double-axis synchronous drawing mechanical property testing instrument has very important meanings on testing researches on dynamic properties when the material bears a complicated stress state under a high-temperature condition.

A remote monitoring system is described which enables monitoring of flow meters or other scientific instruments from a remote location using the GSM cellular phone network. The system includes a wireless modem utilizing the GSM cellular phone network, a central processing unit, connection of a scientific instrument to the central processing unit, power supply (e.g. one or more batteries), and an enclosure for housing the components.

The invention relates to a multilevel static-dynamic coupling mechanical loading device for a high-frequency fatigue test, and belongs to the fields of scientific instruments and mechanical property tests of materials. The device comprises a high-frequency fatigue loading unit, a low-frequency fatigue loading unit, a tensile loading and detection unit and a synchronous rotating unit. The device realizes tensile fatigue loading through a servo motor, a piezoelectric stack and an ultrasonic vibrator assembly, and simultaneously realizes detection of load and displacement through a mechanical sensor and an optical fiber displacement sensor. The motor drives a rotating mechanism by a motor to realize real-time dynamic crystal diffraction characterization performed on a sample by a synchronous radiation light source. Moreover, a dual-V gap feature defect sample can realize a composite load test mode of tensile-sheering or tensile-bending and the like close to the actual stress form of a material. The multilevel static-dynamic coupling mechanical loading device provided by the invention is compact in structure, and can integrate multiple test methods, thereby providing an effective test tool for the high-frequency fatigue test of the material.

The invention relates to an in-situ nano-indentation tester based on an adjustable stretching-bending preload, and belongs to the field of electromechanical precision scientific instruments. The in-situ nano-indentation tester comprises an in-situ nano-indentation testing module, a stretching preload loading module and a bending preload loading module, wherein the in-situ nano-indentation testing module consists of a precision displacement / force loading unit and a load / displacement signal detection unit; the stretching preload loading module consists of a precision driving unit A, a precision transmission unit A, a load / displacement signal detection and control unit A and a clamping unit A; the bending preload loading module consists of a precision driving unit B, a precision transmission unit B, and a load / displacement signal detection and control unit B. The in-situ nano-indentation tester has the advantages of small size, compact structure and high testing precision; supplied test contents are rich; the deformation / displacement / load rate can be controlled; the in-situ nano-indentation tester can be arranged on carrying platforms of various main-stream electronic microscopic vacuum cavities and is compatible with imaging equipment; the application range is wide.

A novel software application method, as integrated with various scientific instruments, is introduced herein that allows new capabilities to be added to the language at runtime without, if desired, having to re-compile the application. As part of the software capabilities, the macro programming language presented herein enables automated connection between inputs and outputs of action statements within a script with visual feedback for configuration verification. As another aspect, the macro programming language of the present invention provides for automation of different spectroscopic applications, which if desired, also allows for the automatic generation of a configurable user interface connected to the intent of the macro.

The invention relates to a method and a device for testing continuous thermoregulation high-vacuum low-temperature micro nanoindentation, belonging to the field of precise scientific instruments. An X-direction precision regulating module is used for regulating the position of a press-in point; a Z-direction precise press-in driving module is used for pressing in precisely, and a displacement signal and force signal precision detection module is used for detecting a displacement signal and a force signal precisely; a variable temperature object support and a cryostat are connected so as to achieve contact thermoregulation of a sample. The device is integrated with a customerized vacuum box so as to achieve micro nanoindentation testing of a sample when the temperature is continuously changed at 77K-500K under the vacuum environment; the problems of precise temperature variation, heat insulation, precise detection and the like in low-temperature micro nanoindentation testing are solved; the blank of the indentation testing technique of a traditional micro nanoindentation in a low-temperature environment when the environment temperature is changed is filled up. According to the device, the structure is simple, the process is convenient, the size is small, the response is rapid, the positioning is accurate, the temperature can be changed and controlled precisely, the displacement load signal can be detected precisely, and the micro precision press-in function can be achieved.

The invention discloses a power supply management integrated marine monitoring general data collector which comprises three parts including a power supply module, a master-slave control module and a sensor module, wherein the power supply module is mainly used for supplying energy to the master-slave control module and the sensor module, the master-slave control module is communicated with the sensor module through a field CAN bus and is used for managing and controlling the sensor module, and the sensor module is compatible with standard sensors with different interfaces and is used for transmitting sensor data and managing a power supply. According to the power supply management integrated marine monitoring general data collector, the sensor power supply management is integrated, interface sensors of digital quantity, analog quantity, switching quantity, pulse quantity and frequency quantity (partial low frequency) are effectively compatible, marine scientific instruments of hydrology, meteorology, chemistry and the like can be integrated and carried, and the design requirements of online observation and self-contained monitoring can be satisfied. During extended integration, only corresponding sensor modules need to be increased or reduced, simple application software is configured, and the effects of convenience and flexibility are achieved.

The invention relates to a device and a method for testing the fatigue mechanical property of a material under a tensile-bending composite load, and belongs to the field of precision scientific instruments and material testing. The device comprises a vibration isolation base, a supporting frame, an ultrasonic loading module, a hydraulic loading module, a tensile loading module and an ultrasonic flaw detection module; the supporting frame is connected with the vibration isolation base; the hydraulic loading module is connected with the supporting frame through a connecting flange; the ultrasonic loading module is connected with the hydraulic loading module through a thread; and the tensile loading module and the ultrasonic flaw detection module are arranged on the vibration isolation base.The device has the advantages as follows: high-frequency and high-load cross-range loading can be realized; ultrahigh-frequency bending fatigue loading and tensile-bending static dynamic composite load loading can be realized; and the tensile loading module can ensure accurate centering of tested material samples. The tested material samples made of different materials and having different sizes can be subjected to high-frequency fatigue testing under the static dynamic composite load; and a reliable means is provided for service performance analysis of key materials in aerospace and numerousfields.

The invention discloses a multi-degree-of-freedom water-jet propulsion cable remote underwater robot. The robot comprises a main cavity, a floating body device and two multi-degree-of-freedom water-jet propulsors, wherein the floating body device is fixed on the upper surface outside the main cavity; the two multi-degree-of-freedom water-jet propulsors are fixed on the two sides of the main cavity through circular rods respectively; cylinders of the multi-degree-of-freedom water-jet propulsors are cylindrical cavities; parts of the middle parts of the cylinders are cut to serve as water flow outlets during lateral water jetting of the propulsors; the two sides of the cut parts of the cylinders are provided with a plurality of ball bearings along the circumference respectively; one end in the cylinder is provided with a propeller motor bracket for fixing a propeller motor; the propeller motor is connected with a propeller through a propeller shaft; a lantern ring which is thin-walled and cylindrical is connected with the cylinders through the ball bearings; and the surface on the middle part of the lantern ring in the axial direction is provided with a water jet port for producing lateral water jetting. The robot has the advantages of high attitude stabilization, high autonomous stabilizing capability, wide operating range, multi-degree of freedom, capability of loading more scientific instruments and wide application range.

The invention, which belongs to the field of precise scientific instruments, relates to a material mechanical property in-situ test instrument and method under a high-temperature complex mechanical load. A support frame module of the instrument is used for realizing stable support and effective vibration isolation of each functional module of the instrument. A high-frequency fatigue loading moduleis used for realizing high-frequency fatigue loading of a tested sample. A static and dynamic mechanical load loading module is used for realizing combined loading of static and dynamic stretching / compressing / bending loads of the tested sample. A high / low-temperature loading module is used for realizing variable temperature environment loading on the tested sample from a low temperature to a hightemperature. An in-situ monitoring module can integrate a surface deformation damage measurement assembly, a three-dimensional strain measurement assembly, a microstructure measurement assembly and an internal damage detection assembly according to actual test requirements to realize parallel accurate in-situ measurement of a micromechanics behavior, a deformation damage mode and a performance evolution law of the tested sample. The material mechanical property in-situ test instrument and method have advantages of complex load environment, rich test content, high measurement precision and thelike.

The invention relates to a piezoelectric stack direct driving type macro-micro combined biaxial stretching-fatigue testing system, and belongs to the field of precision scientific instruments. The piezoelectric stack direct driving type macro-micro combined biaxial stretching-fatigue testing system is mainly composed of a precision driving-transmission unit, a CCD (Charge Coupled Device) imaging detection unit, a mechanical and deformation signal detection unit, a test piece clamping unit and a piezoelectric stack driver unit. In a testing process, the CCD imaging detection unit is used for carrying out in-situ observation on a central point of a test piece; once the central point is deviated, real-time deviation compensation can be carried out through the large-rigidity and high-frequency response piezoelectric stack driver unit, and a position of the central point of the test piece in the testing process is relatively fixed. The testing system has a wide application range, and can be used for realizing single-axis / double-axis stretching tests and single-axis / double-axis stretching fatigue tests; the testing system has good compatibility with an optical imaging system, and can be used for carrying out correlation rule researches of a microstructure and a deformation damage mechanism of materials.

The invention relates to a tension-shear preload based in-situ indentation testing device and method and belongs to the field of precision and scientific instruments. The device is characterized in that a mechanical drive module comprises a servo motor, two stages of worms and gears, a screw and screw nuts, rotation of the motor can be converted into rectilinear motion at a quasi-static rate, and a tension process is realized; an any-angle tension-shear combined loading module tightly presses a movable device on a base through friction force of bolts, and the load stress inclination of a test piece can be changed through change of the angle of the movable device; a cantilever indentation module realizes loading through a piezoelectric stack which is mounted above a cantilever beam and parallel to the cantilever beam, and the cantilever beam is extruded and forced to bend to realize indentation when the piezoelectric stack is powered and generates actuation. When a tension-shear combined test is performed, the device is placed under a microscope for in-situ observation. The tension-shear preload based in-situ indentation testing device has reliable principle, compact structure and higher practical value, and can perform tension-shear-indentation multi-load mechanics test of materials as well as in-situ observation accurately.

The invention relates to a precise nanoindentation test device and belongs to the field of precise scientific instruments. The precise nanoindentation test device mainly comprises a precise press-in driving unit, a load signal and displacement signal detection unit and an objective table, wherein the precise press-in driving unit consists of a voice coil motor, a connecting piece, a guide rail and a sliding block; the voice coil motor and the guide rail are arranged on a pedestal; a precise mechanical sensor for detecting pressure of a diamond pressing head pressed into a material is arrangedon the pedestal through a side plate I; a precise displacement sensor for detecting diamond pressing head press-in depth is arranged on the pedestal through a side plate II; the objective table is arranged on the precise mechanical sensor; the diamond pressing head is arranged on the connecting plate; and the connecting plate is assembled on the sliding block through bolts. The precise nanoindentation test device has the advantages of simple structure, convenience for processing, small volume, high positioning precision, quick response and capacity of observing the deformation process and theinjury mechanism of the material in the press-in process in situ under an electron microscope so as to intuitively know the micronano mechanical property of the material.

The invention relates to the field of computer application technologies, and discloses a scientific instrument working status monitoring method based on computer vision, which comprises an image collecting part, an image analyzing part and a status data transmission part. An image sensing device is used for transmitting the collected images of the scientific instrument working status indicator to the embedded processing module for image analysis and processing, acquiring working status of the instrument, and transmitting the working status to a remote server via the Internet. In the image analyzing process, a plurality of ways including characteristic point marking, characterized point positioning based on circle detection, template matching and color matching are jointly used for identifying working status of the instrument. The characterized point positioning is realized through the algorithm of circle detection based on an inscribed right-angle triangle. The circle detection algorithm establishes an array storage space based on effective pixel positions. The invention applies computer visual detection technologies to monitoring of scientific instruments, and realizes reliable and real-time remote monitoring of working status of scientific instruments.

The invention relates to an in-situ micro-nanometer mechanics testing and scoring machining integrated machine, belonging to a mechanical-electrical integration precision scientific instrument. A left side step motor drives a screw nut through a coupler; relative connecting pieces are driven by the screw nut, so that the rough feeding of a flexible hinge and a diamond pressing head can be realized; and a piezoelectric stack drives the flexible hinge to carry out precise feeding. A right side objective table and a precise force sensor are mounted on the flexible hinge, and is connected with a rotor through a screw; thin-sheet-shaped structures at the both sides of the rotor are in clearance fit with the output ends of the two flexible hinges; the rotor is connected with a guide rail sliding block; the two symmetrical flexible hinges and the guide rail are mounted on a tail base; and the tail base is mounted on the base. The in-situ micro-nanometer mechanics testing and scoring machining integrated machine has the advantages of small size and compact structure; and the in-situ micro-nanometer mechanics testing and scoring machining integrated machine can be mounted in a scanning electronic microscope for a micro-nanoindentation and scoring test. The in-situ micro-nanoindentation test of a material can be carried out at first; the scoring machining technique is optimized according to a test result; the scoring machining is realized according to an optimal technique parameter; and finally, the integrated testing and machining process can be finally realized.

The invention relates to a stretching-bending combined-load in-situ nano-indentation test device and a method and belongs to the field of precision scientific instruments and material mechanical testers. The overall structure of the test device is in a crossing distribution form and comprises three parts, namely, a stretching loading module, a bending loading module and an indentation loading module, wherein the stretching loading module is arranged in the middle place; the bending loading module and the indentation loading module are respectively distributed on the two sides of the stretching loading module; each of the stretching loading module, the bending loading module and the indentation loading module comprises a driving component, a transmission component, an executing component and a displacement signal and force signal precise detecting component; the loading force lines of the stretching loading module, the bending loading module and the indentation loading module are in the same plane. The synchronous acquisition for the loading / displacement signals can be realized and the closed-loop control on a servo driving system can be realized. The device is smart in structure, is compatible with a mainstream optical microscope and is capable of realizing the multi-load in-situ test for a macroscopic test piece with the feature size above millimeter level.

The invention belongs to the technical field of in-vivo imaging detection and scientific instruments and discloses a dual-mode coaxial in-vivo imaging method and a dual-mode coaxial in-vivo imaging system. The system comprises an X-ray and optical signal dual-mode imaging detector, a color filter switching device, an optical imaging module, a rotary object stage, an X-ray source, more than one light source, a movement controller, a light source switching controller, a signal acquisition and digitization processor and a microprocessor. The microprocessor is connected with the movement controller, the light source switching controller and the signal acquisition and digitization processor. The X-ray and optical signal dual-mode imaging detector comprises a photoelectric conversion imaging device, an optical fiber taper, a light-permeable X-ray fluorescent conversion fiber faceplate and a detector shell. Compared with other international dual-mode or multimode in-vivo imaging detection instruments for small animals, the dual-mode coaxial in-vivo imaging system has the advantages that dual-mode coaxial parallel real-time imaging is realized, rotating registration in image fusion and reconstruction is avoided, and structural simplicity and compactness, low cost and promising application prospect are realized.

The invention relates to an in-situ tester for a mechanical property of a small-size torsional fatigue material with controllable magnetic field intensity and belongs to the field of a precise scientific instrument. The in-situ tester mainly consists of a precise driving unit, a driving unit, a clamping unit, a magnetic field loading unit, a detection unit and a supporting unit, wherein a motor of the precise driving unit is used for driving a rotating end of the clamping unit to rotate back and forth at a fixed angle through a speed reducer and a crank and rocker mechanism in the driving unit, so as to realize the torsional fatigue loading; the adjustment for the torsional fatigue reciprocating deflecting angle can be realized by changing the lengths of the crank, connecting rod and rocker in the crank and rocker mechanism; the adjustment for magnetic field intensity can be realized by changing the distance of the pole head and the magnetic field loading unit. The tester wholly has a horizontal structure, is simple and compact, is compatible with optical microscope and can be used for in-situ real-time observing the sample. A reliable test method is supplied for disclosing a mechanical property and fatigue damage system of the material under different magnetic field intensities.

The invention discloses a real-time remote monitoring device for analyzing and testing medical instruments working status and using circs. The device comprises: signal detecting, data processing and remote communication. The device has the advantages of realizing monitor working status and using circus of science instruments of different categories of mass spectrum, optical spectrum, wave spectrum, X ray, chromatogram and of being located in different area, and of sending the monitored data to remote server.

The invention relates to a reflection-type roll wear degree on-line detection device. The detection device is provided with a linear guide rail, the upper portion of the linear guide rail is provided with a slide block, an electromagnetic displacement control tube I is in double-point connection with the slide block, an electromagnetic displacement control tube II is in double-point connection with the slide block, the side face of a support II is fixedly provided with a linear step motor I and a linear step motor II, the linear step motor I and the linear step motor II are parallel in the vertical direction, a CCD array is arranged at the front end of the linear step motor I and the front end of the linear step motor II, a triangular locater laser light source is installed in the electromagnetic displacement control tube I, a reflection-type optical fiber probe is installed in the electromagnetic displacement control tube II, the side face of the slide block is fixedly provided with an angular step motor, and the angular step motor drives a conveyor belt to move. The device is high in sensitivity and anti-electromagnet-interference and flexible to operate, an experimenter can quickly master usage of the device, and the device has high practicability and can improve the production technology level of strip steel plates in China and promote development of the scientific instrument industry in China.

The invention relates to a small-size test device for mechanical and electrical coupling characteristics and belongs to a mechanical-electrical integrated precise scientific instrument. The small-size test device mainly comprises a Z axis autoexec adjusting mechanism, an XY autoexec adjusting mechanism, a piezoelectric precise driving pressing unit, a load signal detection unit, a displacement signal detection unit and a current signal detection unit, wherein the Z axis autoexec adjusting mechanism is installed on a base; the XY autoexec adjusting mechanism is installed on an upper supportingplate; the piezoelectric precise driving pressing unit is connected to a micro-slipway; the precise displacement sensor is fixedly connected to the front end side face of the piezoelectric precise driving pressing unit; a strain foil rood beam for detecting a load signal is installed on a worktable of the Z axis autoexec adjusting mechanism; and the change of the electrical characteristic generated by materials in the test process is detected by using the principle of a diamond indenter anvil cell and a PCD (Polycrystalline Diamond) diamond indenter. The small-size test device provided by theinvention has the characteristics of compact structure, small volume and high precision and the like.

The invention discloses a submarine cable laying device suitable for an underwater remote control operation robot. The device is carried at the bottom of an underwater ROV, and accurate cable routingcontrol and recording can be realized by utilizing track control and recording functions of the ROV; the number of turns of rotation is fed back through a tensioning pulley servo motor, the laying length of the cable is accurately measured, calculated and recorded, the tensioning state of the released cable is kept through the servo motor torque for the tensioning pulley driving, and releasing andrecycling of the cable are achieved through cooperation of a cable arranging mechanism and the tensioning pulley. Attitude adjustment is carried out by combining attitude control of the ROV and an electric propulsion system of the cable laying device, and accurate plugging and unplugging of the submarine cable can be realized. The submarine cable laying device is mainly used for plugging connection and laying operation of photoelectric composite cables between main and secondary junction box nodes and between the junction box and a scientific instrument of a submarine scientific observation network, and can also be used for connection and laying of submarine cables and wires used by underwater production equipment and underwater factories.

The invention relates to an apparatus and method for testing in-situ triaxial tension fatigue under multi-field coupling, belonging to the field of precise scientific instruments. The apparatus comprises a triaxial tension, fatigue loading and measuring subsystem, a thermal-field loading subsystem and a cantilever indentation loading and measuring subsystem. Loading of triaxial tension is realized as a motor, after decelerated by a two-grade worm and gear, drives a screw-screw nut pair mechanism to drive an tension platform; fatigue testing is realized via a flexible hinge driven by three piezoelectric ceramics; a thermal field is loaded as a heating system composed of a silicon nitride heating plate and a heating bench carries out heat-radiation heating on a test piece; cantilever indentation is applied as the piezoelectric ceramics drive the flexible hinge to allow a cantilever beam to generate downward displacement; and a main platform is provided with a location hole, a microscope can be integrated on the main platform through an installation platform, so in-situ observation of the test piece in loading is realized. The apparatus is reliable in principle and compact in structure and can accurately characterize micro-nano mechanical properties of a material under multi-field coupling like triaxial tension.

The invention relates to an instrument and method for in-situ testing of material properties under a force-electricity-heat-vertical magnetic field coupling condition, and belongs to the field of precise scientific instrument. The instrument comprises an axial force loading platform, a silicone oil tank assembly component and a controllable electromagnet component, wherein the axial force loading platform is composed of a fixed end assembly component and a movable end assembly component. The axial force loading platform provides support or applies an axial compression load to a tested material sample in the testing process according to experimental conditions, the force load and displacement are precisely detected while the compression load is applied, and a detection means of the compressive mechanical properties of the tested material sample is effectively provided. The silicone oil tank assembly component is used cooperatively with insulation fixtures at two ends, is integrated with a resistance-type heating block, a thermocouple, a controllable electromagnet, a Hall probe and other test devices, and provides a corresponding electricity-heat-magnetism multi-physical field loading test environment for testing the tested material sample. The instrument has the advantages of miniaturized and light-weight structure, high function integration degree and high practicability.

The invention relates to a high-temperature ultrasonic fatigue in-situ test instrument and a test method, and belongs to the field of a precise scientific instrument. The instrument consists of an integrated frame module, a mechanical loading module, a high temperature loading module and an in-situ monitoring module, wherein the integrated frame module is used for accurately positioning each functional module and simultaneously providing stable support and effective vibration isolation; the mechanical loading module is used for synchronously exerting static stretching or compression load on two ends of a tested sample and exerting an ultrasonic fatigue load according to test needs and is capable of realizing axial precise positioning; the high temperature loading module is used for exerting a high temperature load on the tested sample; and the in-situ monitoring module is used for performing in-situ monitoring on the surface deformation damage and the internal damage defect of the tested sample. The synchronous representation and three-dimensional reconstruction for the defect information of the tested sample can be implemented from inside to outside and from the exterior to the interior. The high-temperature ultrasonic fatigue in-situ test instrument has the characteristics that the load environment is complex, the test precision is high and meanwhile the material mechanical behavior and deformation damage mechanism can be dynamically monitored.