19 results about "Creep testing" patented technology

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.

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.

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.

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.

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.

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.

1. Name of the product in this design: Electronic Creep Testing Machine. 2. Purpose of this design: This design is used for material performance testing. 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.

This utility model relates to the field of materials testing technology and discloses a constant temperature heating furnace for a high-temperature tensile creep testing machine. It includes a base cover, a rubber pad fixedly connected to the top of the base cover, a protective shell fixedly connected to the top of the rubber pad, a base plate fixedly connected to the inner wall of the protective shell, a fixed shell fixedly connected to the top of the base plate, a central crossbeam slidably connected to the front side of the fixed shell, a clamping seat fixedly connected to the front side of the central crossbeam, a force-applying rod slidably connected to the top of the clamping seat, a force-applying block fixedly connected to the bottom of the force-applying rod, two rotating plates rotatably connected to the bottom of the force-applying block, and limit plates rotatably connected to adjacent sides of the two rotating plates. Limit blocks are slidably connected to the bottom of the clamping seat. In this utility model, moving the force-applying rod moves the force-applying block, causing the rotating plates at the bottom to rotate, disengaging the limit plates on both sides of the rotating plates from the limit blocks, thus enabling rapid mold replacement.

This invention discloses a dual-posture motor creep testing device and method. The device includes an environmental control unit, a dual-posture testing fixture unit, a high-precision measurement unit, and a data acquisition control unit. The dual-posture fixture is interchangeable between vertical and horizontal configurations to adapt to the actual installation posture of the motor. Thermal expansion interference is eliminated through a 60℃ / 72h heat pretreatment. Displacement is measured non-contactly using a laser displacement sensor, and temperature is measured by thermocouples. The actual creep is obtained based on the reading after thermal equilibrium. The method includes clamping, heat pretreatment, calibration, loading, and automatic data acquisition. This invention provides accurate posture, high precision, unattended operation, and reliable data, making it suitable for long-term creep reliability testing of motors in various household appliances.

This invention discloses a creep testing device and method for simulating real-world conditions in boiler steam pipelines, relating to the field of creep testing. It includes a tensile testing mechanism and an environmental temperature simulation mechanism. The tensile testing mechanism comprises a testing frame, a tooling base, and a testing beam. The testing beam is slidably mounted on the testing frame and has the freedom to move along the height of the testing frame. A force sensor is installed at the bottom of the testing beam, and the test shaft of the force sensor is connected to a tensile testing head. An upper tooling plate and a lower tooling plate are respectively provided on the tensile testing head and the tooling base. The test piece is made into a tubular shape, with flanges formed at both ends to ensure that the shape and size of the test piece closely resemble the shape and size of the steam pipeline. The flanges at both ends of the test piece are respectively flanged to the upper and lower tooling plates. The environmental temperature simulation mechanism is used to supply steam into the test piece, simulating the actual working conditions of the steam pipeline, thus making the test results more accurate.

This invention relates to a small punch test apparatus for studying the axial and circumferential creep of nuclear fuel cladding tubes. The apparatus, used to hold a sample of a nuclear fuel cladding tube, includes a lower die, a small punch, and an upper die. The lower die has a punched hole, and the upper die has a guide groove. The sample is located between the upper and lower dies, with the upper die pressing the sample against the lower die. The small punch passes through the guide groove and slides relative to it. The center of the sample is located between the small punch and the punched hole, and the position of the punch matches the movement path of the small punch. This invention also relates to a small punch test method for studying the axial and circumferential creep of nuclear fuel cladding tubes. By designing a small punch test apparatus for holding nuclear fuel cladding tubes, this invention accurately calculates the equivalent creep stress and equivalent creep strain of the nuclear fuel cladding tube, establishes a creep constitutive model, and achieves efficient and convenient research on the axial and circumferential creep behavior of nuclear fuel cladding tubes, belonging to the field of nuclear fuel cladding tube creep testing technology.

The utility model discloses a kind of multi-station creep testing machines, belong to the technical field of creep test, including bottom box, the bottom box top is fixedly connected with crossbeam, the crossbeam bottom is installed with multiple groups of upper pull rod;Multiple groups of driving assemblies are installed in the bottom box, the number of driving assembly is same with upper pull rod, and the output end of each group of driving assembly is fixedly connected with lower pull rod;The end of upper pull rod and lower pull rod mutually close, and all are fixedly connected with fixture;Through multiple independent driving assemblies, and the design of corresponding upper pull rod and lower pull rod, can simultaneously aim at multiple groups of different material sample piece, test, then compare test result, overcome only one sample piece is tested, and then test efficiency, greatly improve.

The utility model relates to the technical field of test equipment, and discloses a creep test device which comprises a high-low temperature test box, a sample library, a clamping tool, a first manipulator and a second manipulator, the high-low temperature test box is provided with a test cavity; the sample library is used for loading to-be-tested and tested samples, and the sample library is connected into the test cavity; the plurality of clamping tools are arranged in the test cavity at intervals and are used for clamping a sample; the first manipulator is connected to the inner wall of the upper side of the high-low temperature test box and is used for enabling the clamping tool to clamp and loosen the sample; the second manipulator is connected to the inner wall of the lower side of the high-low temperature test box, and is used for transferring a to-be-tested sample in the sample library to the clamping tool and transferring the tested sample on the clamping tool to the sample library. The device does not need to manually load the sample onto a clamping tool, can save the operation time, has small influence on the temperature in the test box, further reduces the influence on other samples, and has the characteristic of high test precision.

This utility model relates to the field of concrete creep testing technology, and in particular to a specimen forming device with an embedded sensor for concrete creep testing. It includes a molding die, with a partition bracket fixedly connected to the inner side of the molding die. The front and rear ends of the molding die are each provided with a first groove and a second groove. A first electric push rod is fixedly installed on the right side of the first groove. In this utility model, the inclusion of a first electric push rod, a second electric push rod, a first slider, a long vertical plate, a second slider, a short vertical plate, a first scraping plate, a third slider, and a guide post facilitates the use of an automatic scraping structure to quickly remove excess slurry when the sensor is embedded and the excess slurry needs to be scraped and removed. This allows the device to quickly complete the scraping and removal work within a short timeframe.

This invention discloses a hydrothermal coupled direct shear creep testing device and method for frozen soil. The hydrothermal coupled direct shear creep testing device for frozen soil includes: a test cylinder with a top cover; a liquid-isolating chamber located inside the test cylinder; a shear box located inside the liquid-isolating chamber, with its bottom connected to the bottom of the test cylinder, and a sample placed inside the shear box; a cooling plate located inside the shear box, positioned at both ends of the sample; a water replenishment plate located inside the shear box and connected to the cooling plate; a pressure load assembly that passes through the top cover and the liquid-isolating chamber sequentially and connects to the top of the shear box; a tensile load assembly connected to the outer wall of the shear box; and a variable speed motor connected to the tensile load assembly. The hydrothermal coupled direct shear creep testing device for frozen soil of this invention is easy to operate and can perform multiple tests, including direct shear creep of frozen soil under hydrothermal coupling.

This invention discloses a cell module creep testing platform with visual inspection, comprising: a moving module mounted on a frame; a fixed plate mounted on the frame; two first end plates fixed to the fixed plate; two second end plates slidably mounted on the fixed plate; a first X-axis clamping module mounted on the fixed plate; a second X-axis clamping module slidably mounted on the fixed plate and sliding synchronously with the two second end plates; a pushing mechanism mounted on the frame, the output end of which is connected to the second X-axis clamping module; a Y-axis clamping module mounted on the frame; and a visual inspection module mounted on the frame. This invention can perform performance testing on the structural adhesive in the width and length directions of the cell, rejecting defective products and ensuring that all cell modules installed in the battery casing are qualified.

This invention discloses a rapid testing method for the temperature sensitivity of creep properties of metallic materials, comprising the following steps: selecting a creep specimen and conducting a creep test at a certain temperature to be investigated on a creep testing machine that meets the testing conditions; the creep time is usually not less than a set time; after the creep time is reached, keeping the creep stress constant, adjusting the test temperature to another temperature to be investigated and conducting a creep test, the creep time of which is usually not less than a set time; obtaining creep-time data at different temperatures and plotting creep-time curves; determining the temperature sensitivity of the material's creep properties at the tested creep stress and temperature based on the creep-time curves. This invention proposes a rapid testing method for the temperature sensitivity of creep properties of metallic materials. This method uses only one specimen, eliminating differences between specimens, greatly improving testing efficiency, and saving testing costs.

The application provides a split atmospheric furnace sealing device for creep test and a split 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 which is bound to the first high-temperature-resistant sealing piece along the height of the first high-temperature-resistant sealing piece, and the first high-temperature-resistant sealing piece is configured to be sleeved on an upper pull rod; the lower sealing assembly comprises a second high-temperature-resistant sealing piece and a second fixing piece, the second high-temperature-resistant sealing piece is configured to be sleeved on a slidable lower pull rod and a creep extensometer, the second high-temperature-resistant sealing piece comprises two second high-temperature-resistant sealing blocks, and the second fixing piece is bound to the second high-temperature-resistant sealing piece along the opposite direction of the two second high-temperature-resistant sealing blocks. The device can reduce the radiation heat dissipation and conduction heat dissipation of the furnace mouth of the split atmospheric furnace, avoid sealing failure in the test caused by axial stretching and air flow disturbance, ensure the uniformity of the temperature field in the furnace in the test, reduce energy consumption and burning loss of test machine parts, and improve test quality and efficiency.

The application discloses a high-throughput high-temperature creep testing machine for fiber bundles and fiber bundle composites, and belongs to the technical field of creep equipment. The testing machine comprises a shell, a plurality of upper fixing assemblies, a high-temperature heating system, a plurality of lower fixing assemblies, a strain measurement system, a plurality of weight systems and a loading system. The plurality of upper fixing assemblies and the plurality of lower fixing assemblies are arranged in one-to-one correspondence and are used for simultaneously suspending a plurality of creep samples. The high-temperature heating system adopts a high-temperature furnace with a double-door structure to ensure that the temperature in the furnace is uniform. The strain measurement system comprises a plurality of high-precision displacement sensors and is used for independently measuring the creep strain of each sample. The plurality of weight systems independently apply test loads through the loading system, and a plurality of groups of creep tests under the same temperature and the same or different stresses can be realized. The application has the advantages of simple structure, convenient operation, efficient and accurate high-temperature creep performance testing of fiber bundles and their composites, significantly shortened test period and reduced test cost.