19 results about "Physical performance testing" patented technology

The invention discloses a temperature difference-deformation decoupling method for thermal expansion coefficient in-situ monitoring, and belongs to the technical field of material physical property testing, and the method comprises the following steps: obtaining high spatial resolution temperature distribution data and full-field deformation data; performing three-dimensional reconstruction on the high-spatial-resolution temperature distribution data to generate dynamic temperature field data; theoretical thermal stress is calculated based on the dynamic temperature field data and the material mechanical parameters, and interference deformation data is generated; a dynamic correction coefficient is introduced to decouple full-field deformation data, and a real thermal expansion deformation field is output; calculating a thermal expansion coefficient based on the real thermal expansion deformation field and the temperature change trend data; and monitoring a uniformity index of a real thermal expansion deformation field, and adjusting a dynamic correction coefficient and a material mechanical parameter on line. According to the method, the temperature field and the deformation field are synchronously collected, thermal stress interference deformation caused by temperature difference is theoretically calculated and eliminated, and a closed-loop feedback optimization mode is combined, so that high-precision dynamic monitoring of the thermal expansion coefficient of the material under the non-uniform temperature condition can be realized.

The utility model relates to the field of material physical property testing, and discloses a hydraulic horizontal pushing clamp used in a normal temperature environment, which comprises a clamp body, the top end of the clamp body is in threaded connection with a connecting rod, the side wall of the clamp body is fixedly connected with a hydraulic cylinder through a hexagon socket cap screw, and the inner wall of the hydraulic cylinder is provided with a piston rod. A clamping mechanism is arranged on the side wall of the right end of the piston rod, a hydraulic hard pipeline is arranged on the outer wall of the clamp body, a right-angle connector is detachably installed at the lower end of the hydraulic hard pipeline, and a centering piece is arranged at the bottom end of the clamp body. According to the utility model, hydraulic oil is accurately conveyed to the hydraulic cylinder through the hydraulic hard pipeline and the right-angle joint, the hydraulic oil can be accurately controlled to enter and exit according to test requirements, the piston rods are pushed to stably reciprocate, and the upper rack, the lower rack and the gear shaft are matched to guarantee the synchronous movement of the piston rods on the two sides; and the clamping accuracy and stability of the clamping blocks are effectively improved.

This utility model discloses a door and window physical performance testing device that facilitates the fastening of doors and windows in the field of door and window testing equipment technology. It includes a support frame, with physical testing components arranged on the top and sides of the support frame. Door and window panels are placed on one side of each physical testing component. The physical testing component includes a stamping testing part installed on the top of the support frame. Placement adjustment parts are arranged on both sides of the support frame. This door and window testing device, through the coordinated work of the support frame and the physical testing components (which include identically constructed stamping testing parts and placement adjustment parts), utilizes a hydraulic cylinder to adjust the distance between two sets of stamping positioners. This allows for flexible adaptation to door and window panels of different lengths and specifications. This flexible adjustment mechanism not only meets diverse testing needs and reduces time and labor costs associated with frequent parts replacement, but also achieves high efficiency and convenience in the testing process.

The invention discloses a computer hardware mainboard physical performance detection system, which comprises a base, vibration springs are fixedly connected to four corners of the top of the base, a protective shell is fixedly connected to the tops of the vibration springs, and a vibration motor is fixedly connected to the bottom of the protective shell, and belongs to the technical field of hardware physical performance testing. According to the physical performance detection system for the computer hardware mainboard, after detection is finished, an electric telescopic rod is controlled to drive a detection table to move upwards, in the process, a push rod on a movable rod is extruded by an inclined baffle, the push rod drives the movable rod to move, and then the movable rod drives a third limiting rod to move downwards through an inclined groove and a third sliding rod; and in the process that a third limiting rod drives a second self-locking gasket to be separated from a first self-locking gasket, a rotating disc loses limiting, and a main board is clamped, the pulling force of a pulled first spring can drive a movable plate to reset, so that a clamping block in the clamping mechanism is automatically separated from the main board, and the purpose of automatically releasing clamping is achieved.

The invention relates to the technical field of physical performance testing, in particular to a motor controller detection device which comprises a testing frame, the output end of a motor body is connected with a testing shaft through a coupler, a friction disc is arranged on the testing shaft, a load disc is installed on the testing frame, the load disc and the friction disc are oppositely arranged, and when the motor body rotates at a low speed, the friction disc is driven to rotate. The detection device further comprises a power-off unit, a relay is connected between the power-off unit and the controller body, the power-off unit is used for automatically cutting off power supply of the controller body when it is detected that the motor body is continuously in a low-speed on-load state, and the power-off unit based on optical and thermal mechanical linkage works cooperatively through the load disc with the switchable friction face. An intelligent sensor concept is fused, the device can simulate on-load starting working conditions of motors with different power levels, and can cut off power supply of a controller in a delayed manner through a bimetallic strip without an external power supply when abnormal states such as continuous low-speed stalling are detected, so that the test safety is improved, and the application range is widened.

The invention discloses a building material physical performance testing device for building engineering, and relates to the technical field of building engineering material detection.The building material physical performance testing device comprises a testing platform, an experiment shell is fixedly installed on the top face of the testing platform, a stretching assembly is installed in the experiment shell and comprises a movable support, and a fixed support is fixedly installed on the top face of the testing platform; according to the steel bar tensile testing device, an impact plate is impacted when the steel bar is broken, so that a trigger striker ejects a second ball valve open, and high-pressure hydraulic oil in a lifting cylinder is guided into a pressure relief cylinder and a corrugated sleeve through a pressure relief pipe; meanwhile, a plurality of second springs are used for driving a movable piston, a lifting ring and an inner wedge-shaped sleeve to reset, and a plurality of sliding clamping jaws automatically loosen at the moment of breakage, so that reverse impact force is prevented from interfering sensor signals, and the judgment precision of breakage points and the stability of test data are improved.

The present invention relates to the technical field of physical property testing of complex structural materials, and specifically to a method for testing the physical properties of a triangular arm profile, comprising: responding to a physical property testing instruction of the triangular arm profile, reading physical property test parameters fed back by a performance testing device; photographing the triangular arm profile with a camera to obtain a profile detection pattern; calculating the physical deformation of the triangular arm profile based on the profile detection pattern, and generating a physical property evaluation report of the triangular arm profile in combination with the corresponding physical property test parameters; constructing a deformation triangle for characterizing the overall deformation of the triangular arm and an auxiliary triangle for characterizing the deformation of the strip-shaped weight-reducing hole through the deformation pattern in combination with an image algorithm, thereby realizing deformation tracking of multiple parts of the triangular arm profile from the overall to the local, and then inputting the deformation amount, a cyclic force fluctuation curve, a test duration and other parameters into an optimized neural network model to automatically generate a physical property evaluation report including elastic modulus and yield strength.

The present invention belongs to the technical field of coupler physical performance testing equipment, and in particular to a locomotive coupler physical performance testing platform, comprising a base plate, a mounting frame fixedly mounted on the upper end surface of the base plate, a threaded rod rotatably connected between the two mounting frames via a bearing, a guide rod fixedly connected between the two mounting frames, a movable seat 1 and a movable seat 2 are slidably sleeved on the periphery of the guide rod, a threaded sleeve is threadedly sleeved on the periphery of the threaded rod, and the threaded sleeve is fixedly mounted on the movable seat 1, and a mounting plate 1 and a mounting plate 2 are fixedly mounted on the upper end surfaces of the movable seat 1 and the movable seat 2 respectively; the present invention enables the movable seat 2 to be slowly reset under the action of the reset component 1, which not only facilitates reuse in the later period, but also utilizes the principle of compressed air to replace traditional reset components such as springs through the cooperation of the piston cylinder and the piston block, thereby achieving a more gentle reset effect.

The invention relates to the technical field of physical performance testing of high polymer materials, and particularly discloses a method and a system for testing lubricant to improve melt flowability, and the method comprises the following steps: acquiring motion state parameters and microstructure image data of a melt under the superposition action of rotary shearing and axial oscillation in real time; a sequence polarization image is collected, a synchronous data pair is generated through time alignment, and structural evolution parameters such as the molecular orientation relaxation rate and the interface slip layer thickness are quantized; a polarization intensity attenuation curve is fitted based on a single exponential attenuation model, and the effect of improving the internal friction of the melt body by the lubricant is directly represented; the difference between the apparent shear rate and the real shear rate is combined to deduce the thickness of an interface slip layer, and the efficiency of the lubricant for reducing external friction is quantified; and finally, a fluidity prediction report containing a multi-dimensional improvement degree index is generated, the efficiency change of the lubricant under different process parameters is revealed, and a scientific basis is provided for new material research and development and processing technology optimization.

The invention discloses a sample cutting device of a sample for textile detection, which comprises a pressing frame and a control panel, and the pressing frame and the control panel are detachably connected; the pressing frame comprises a rectangular frame formed by connecting a plurality of pressing plates end to end, and is used for delineating a cutting area and pressing a textile to be cut; the control panel is used for fixing the position in the pressing frame so as to cut a sample with a set size. According to the sample cutting device for the textile detection, the textile is pressed by the pressing frame, the cutting direction and the size of the sample are controlled by the control panel, the sample cutting device can be used for partial physical performance test sample cutting and partial chemical performance test sample cutting, the problem of non-uniform size of the textile detection sample cutting is solved, the accuracy of a detection result is improved, and the production efficiency is improved. The method is low in cost, convenient, fast and efficient.

The invention discloses a method and system for testing ice resistance of a super-hydrophobic surface structure of energy equipment, and belongs to the field of material physical performance tests.The method comprises the steps that a working electrode pattern is prepared on a super-hydrophobic surface test piece, and a physical connection loop is established; cooling control is executed, spraying is started to form an ice layer, alternating-current potential disturbance is applied, and a complex impedance data sequence is calculated; performing iterative fitting on the complex impedance data sequence to extract characteristic values of the electric double layer capacitance and the charge transfer resistance; the centrifugal rotating table is driven to perform uniform acceleration rotation, and the ice layer stripping critical rotating speed and the icing area are captured; three-dimensional point cloud data are collected to calculate structural damage characteristic values, and a multi-dimensional coupling attenuation model is established. According to the technical scheme, electrochemical impedance spectroscopy on-line monitoring, centrifugal mechanical stripping and laser confocal microscope morphology characterization are combined, and multi-dimensional, dynamic and quantitative coupling analysis of the ice resistance of the super-hydrophobic surface from a microscopic interface to macromechanics can be achieved.

The invention relates to the technical field of material physical performance testing equipment, and discloses a material science and engineering sample physical performance testing device which comprises a base, a detection box is arranged on one side of the top of the base, a moving mechanism is arranged on the upper surface of the base, and the moving mechanism penetrates through the interior of the detection box. A fixing mechanism is arranged at the top of the moving mechanism, a material frame and a cleaning mechanism are arranged on the other side of the base and located on the left side and the right side of the fixing mechanism, a portal frame is arranged on the front side of the detection box, and an impact mechanism is arranged on the side wall of the portal frame. Through cooperative work of the moving mechanism, the fixing mechanism and the cleaning mechanism, automation of the whole process from sample clamping, surface cleaning, transferring to a testing station, impact testing and finally feeding into a detection box is achieved, the single-time testing period is greatly shortened, and the overall testing efficiency is improved.

The present application relates to the technical field of material physical performance testing, and discloses a kind of injectable hydrogel wound dressing tensile strength test method, comprising: establishing the correlation model of the mass of standard sample at different temperatures and maximum breaking load, and initial stiffness and temperature;For the sample to be measured, measure its mass and actual maximum breaking load, and determine its actual initial stiffness;The equivalent temperature of the test is converted using the actual initial stiffness, and the standard theoretical maximum breaking load is calculated by combining the sample mass and the corresponding model, and the performance is determined by comparing the two, the present application avoids the measurement of the geometric size of irregular samples by constructing the correlation of mass and mechanical properties, solves the quality control problem of in-situ forming materials, and the integrated temperature self-adaptive calibration mechanism further ensures the reliability of the determination result in the industrial environment using the mechanical response data of the same test.

The utility model belongs to the technical field of performance testing, and particularly relates to a multi-angle physical performance testing device which comprises a testing console, a testing fixing assembly is installed at the top of the testing console, a testing control assembly is arranged at the top of the testing fixing assembly, and a testing recording assembly is connected to the side of the testing console. The test control assembly comprises a first sliding seat, the top of the first sliding seat is fixedly connected with a supporting frame, the side of the supporting frame is fixedly connected with a control frame, a control groove is formed in the control frame, an adjusting block is slidably connected into the control groove, and a threaded rod is in threaded connection with the interior of the adjusting block. The top of the threaded rod is fixedly connected with a control handle, and a top block is installed at the bottom of the threaded rod. According to the utility model, the plate can be firmly fixed, the anti-deformation capability and the elastic performance of different positions of the plate can be tested, and the test data can be conveniently recorded.

The invention relates to the technical field of textile physical performance testing, and discloses a textile physical performance testing method based on a sensor, and the method comprises the following steps: S1, processing before inspection, S2, preliminary information collection, S3, washing, and S4, low-tension extraction. S5, drying; S6, data processing; and S7, calculating the shrinkage rate. According to the technical scheme, the sample is lifted out of water in a horizontal lifting mode through the tray with the plane, the problem that after the sample is just washed, due to the fact that the self weight of the sample with water is large, the sample is prone to being pulled, and then irreversible deformation is generated is effectively solved, the operation mode is optimized, and the testing precision is effectively improved. By means of the tray with the pressure sensor matrix, whether the position of the sample is correct or not can be tested in the preliminary sample information collection process, it is guaranteed that the initial spreading state of the sample is qualified from the source, and follow-up test errors caused by improper sample spreading are avoided.

This invention discloses a production line for processing wood-plastic composite sound-absorbing panels, comprising: a raw material pretreatment system, a plasticizing extrusion system, a cooling and shaping system, a cutting system, and a testing system, sequentially connected and controlled by a central control system. The testing system includes: an appearance inspection module, a size inspection module, a physical performance testing module, an automatic rejection device, and a data traceability system. The friction and wear testing device includes: a base shell, a cover shell, a sub-controller, a friction testing mechanism, a first vision sensor, a handling robotic arm, a mounting groove, and a scratch testing mechanism. This production line for processing wood-plastic composite sound-absorbing panels, through optimized collaboration between production and testing, enables long-term continuous batch production and solves the problems of low accuracy, strong subjectivity, and low efficiency in testing the physical performance of wood-plastic composite sound-absorbing panels. It can accurately capture the wear rate, scratch resistance durability, and coating peeling of samples.

The application discloses a temperature difference-deformation decoupling method for in-situ monitoring of thermal expansion coefficient, and belongs to the technical field of material physical performance testing. The method comprises the following steps: acquiring high spatial resolution temperature distribution data and full-field deformation data; performing three-dimensional reconstruction on the high spatial resolution temperature distribution data to generate dynamic temperature field data; calculating theoretical thermal stress based on the dynamic temperature field data and material mechanics parameters to generate interference deformation data; introducing a dynamic correction coefficient to decouple the full-field deformation data and output a real thermal expansion deformation field; calculating the thermal expansion coefficient based on the real thermal expansion deformation field and temperature change trend data; monitoring the uniformity index of the real thermal expansion deformation field, and adjusting the dynamic correction coefficient and the material mechanics parameters online. The application can realize high-precision dynamic monitoring of the thermal expansion coefficient of a material under non-uniform temperature conditions by synchronously collecting a temperature field and a deformation field, theoretically calculating and removing thermal stress interference deformation caused by temperature difference, and combining a closed-loop feedback optimization mode.

This invention discloses a packaging box printing surface defect detection device, belonging to the field of printing surface physical performance testing technology. It includes a gantry inspection frame, with bidirectional centering reset units fixedly installed at the middle positions of both sides of the inner wall of the open end of the gantry inspection frame. A first detection unit and a second detection unit, positioned one above the other, are assembled through these bidirectional centering reset units. The bidirectional centering reset units ensure that the first and second detection units always maintain a centered, close-fitting movement to clamp the packaging box panel. Through dynamic torsion detection, the physical integrity of the packaging box printing surface coating is detected online under simulated bending conditions. This differs from existing technologies that rely on static optical measurements and cannot capture cracking defects in the coating during subsequent molding processes. The device uses a detection camera and lightbox inside a high-transparency cylinder to observe the coating in real time during the torsion process.

The invention relates to a grinding tool performance detection device, and belongs to the technical field of material physical performance testing. Comprising a first linear guide rail, two groups of force detection assemblies, a sample cleaning assembly, a sample friction assembly, a sample transfer assembly and a sample conveying assembly. The sample friction assembly is used for applying pressure to a sample and rubbing the surface of the sample through a rotating abrasion wheel, the sample cleaning assembly is used for cleaning a friction area of the sample, the sample transfer assembly is used for shifting the sample, and the sample conveying assembly is used for transferring the sample to be detected. According to the invention, the sample wear resistance testing steps of pre-weighing, friction, cleaning and post-weighing of the sample are all automatically controlled, manual intervention is not needed, whole-process automation is realized, the test efficiency is improved, errors caused by human factors are avoided, and the accuracy of a test result is improved.