1449 results about "Tensile testing" patented technology

The invention provides a tension testing device for an automobile fastener wire material, and relates to the field of tension testing devices.The tension testing device comprises an indicating assembly, the indicating assembly is composed of a conversion mechanism and a displacement sensor, the testing assembly can achieve tension testing of the automobile fastener wire material, and the displacement sensor can detect the tension of the automobile fastener wire material while the tension of the material is tested; the indicating assembly can monitor the deformation degree of the material in real time, test data are comprehensive and efficient, the indicating assembly can automatically control starting and stopping of the deformation monitoring function according to the test state, and the problems that an existing tension test device for the automobile fastener wire material is single in test effect, and the tensile strength of the automobile fastener wire material is poor due to ductility of the automobile fastener wire material are solved. The problems that an existing tension testing device cannot record and monitor deformation generated by a material during testing, and testing data are not comprehensive enough are solved.

The invention discloses a scanning electrochemical microscope in-situ stress corrosion testing device and method, and belongs to the technical field of material stress corrosion testing, and the device comprises a base, a power transmission module, a clamping module, a corrosion module, a signal acquisition module and a scanning electrochemical microscope module. Slow strain rate stretching of a sample is achieved through a servo motor, a planetary gear speed reducer and a transmission mechanism, the clamping module is integrated with a force sensor to monitor loads in real time, the corrosion module provides a temperature-controllable corrosion environment, and the scanning electrochemical microscope module achieves electrochemical scanning of the surface of the sample. The device can synchronously obtain a load-deformation curve, corrosion morphology and microcell electrochemical information under stress-corrosion-temperature multi-field coupling, and provides an effective technical means for deeply researching a stress corrosion mechanism of a material. The method comprises the steps of sample installation, corrosion solution preparation, electrode arrangement, tensile test, electrochemical scanning and the like, and has the advantages of simplicity and convenience in operation, comprehensive data, high precision and the like.

The invention relates to the technical field of textile yarn performance detection, in particular to textile yarn tensile property detection equipment and a method thereof.The textile yarn tensile property detection equipment comprises a tensile test board, a first clamping jaw installed on one side of the bottom of the tensile test board and an electric telescopic rod installed on the top of the tensile test board; therefore, when the device is used, the surface of the yarn to be stretched can be automatically cleaned in a reciprocating manner, so that a plurality of floating wool fibers and other types of impurities remaining on the surface of the yarn are automatically cleaned, the apparent diameter of the yarn is ensured, and the accuracy of measured key parameters such as elongation at break or breaking strength is ensured; the device is simple in structure and convenient to operate, accuracy and reliability of detection data are guaranteed, meanwhile, by arranging the adjusting assembly, the device can be adjusted according to the diameter of yarn, and by means of cooperative operation of the driving assembly and the collecting assembly, cleaned floating wool fibers and other types of impurities can be sucked and collected.

The invention relates to the technical field of testing devices, and discloses a tension testing device for composite rope production, which comprises a workbench, the top of the workbench is fixedly connected with a fixed rope clamp, the top of the workbench is fixedly provided with a telescopic hydraulic cylinder, and the output end of the telescopic hydraulic cylinder is fixedly connected to a moving plate. The movable plate is fixedly provided with a tension sensor, the other end of the tension sensor is connected with the movable rope clamps, the top of the workbench is fixedly connected with the frame bodies, the number of the fixed rope clamps is three, the number of the movable rope clamps is three, and the three frame bodies are arranged on the top of the workbench in a front-and-back mode. By arranging the three fixed rope clamps and the movable rope clamp, tension detection can be carried out on the three composite ropes at the same time, by comparing tension data of the three composite ropes in different environments, errors of a single test can be effectively reduced, the test result is more representative and reliable, and therefore the accuracy of the tension test is improved.

The invention discloses a metal material biaxial load testing device and method, and relates to the field of metal sample tensile testing, the metal material biaxial load testing device comprises a cross fixed slide rail, a temperature control box, a metal sample, a fixed assembly, a tensile assembly and a transmission assembly; wherein the cross-shaped fixed sliding rail comprises two track plates, the temperature control box is arranged at the intersection of the two track plates, and avoiding openings are formed in the surfaces, in the vertical direction, of the temperature control box; the metal sample is arranged in the temperature control box, the ends of the metal sample extend out of the corresponding receding openings respectively, the fixing assembly is connected with the end, extending out of the receding openings, of the metal sample and slides on the cross-shaped fixing sliding rail, and the stretching assembly is connected with the side, away from the metal sample, of the fixing assembly and is arranged on the cross-shaped fixing sliding rail. The stretching assembly has sliding freedom in the length direction of the track plate, the transmission assembly comprises a pressure plate and a telescopic rod, one end of the telescopic rod is hinged to the face, away from the track plate, of the stretching assembly, and the other end of the telescopic rod is hinged to one face of the pressure plate. The scheme has the effect of reducing the biaxial loading cost.

The invention relates to the technical field of tension testing, and discloses an EVA adhesive film tension testing device which comprises a driving motor and a driving lead screw, a supporting plate is arranged between the tops of two stand columns, the driving lead screw is used for driving a cross beam to slide up and down, the driving motor is used for driving the driving lead screw to rotate, a testing cover is arranged on a base, and the testing cover is arranged on the base. The test cover is located below the cross beam, a connecting assembly is arranged at the bottom of the cross beam, the test cover is telescopic, the top of the test cover is detachably connected with the cross beam through the connecting assembly, the test cover is made of a high-temperature-resistant fireproof cloth material, and the test cover is communicated with a heater and an air conditioning unit through pipelines. According to the high-low-temperature tensile testing machine, the gauge length between the upper clamp and the lower clamp can be conveniently observed and adjusted before an EVA adhesive film sample is clamped, so that the testing efficiency is improved, meanwhile, tensile testing can be performed on samples with different lengths in high-temperature and low-temperature environments, and the application range of the high-low-temperature tensile testing machine is expanded.

The invention relates to the technical field of new energy automobile tension spring testing, and discloses a new energy automobile tension spring stability detection device, which comprises a mounting bracket arranged at the top of a supporting bottom plate, a tensile test mechanism arranged on one side of the mounting bracket, and a compression test mechanism arranged on the other side of the mounting bracket. According to the new energy automobile tension spring stability detection device, a transmission gear drives a transmission rack to perform lifting adjustment, a tension spring is conveniently and stably stretched, the tensile strength of the tension spring is further tested, and a hand and a forward and backward lead screw conveniently drive four spring clamping plates to perform telescopic movement through a nut seat; the clamping diameter of a spring clamping plate is flexibly adjusted, an electric air cylinder drives a spring top plate to press downwards, the spring top plate is connected with a spring sleeve rod through a limiting round hole, the tensioning spring is conveniently limited in the spring clamping plate to be compressed, the compression deformation degree of the tensioning spring is conveniently observed, and the compression strength of the tensioning spring is conveniently tested.

The invention relates to the technical field of material mechanical property testing, in particular to a modularized rubber stress relaxation testing device and method.The modularized rubber stress relaxation testing device comprises a base, a stretching assembly, a compression assembly and a force sensor, and the stretching assembly and the base are detachably connected to form a stretching testing module; according to the invention, the common base and the detachable and replaceable stretching assembly and compression assembly are adopted, so that the same set of device can be flexibly assembled into a stretching test module or a compression test module according to test requirements, and therefore, the test efficiency is improved, and the test cost is reduced. Compared with the prior art that special equipment needs to be prepared for different test modes respectively, the universality and the use flexibility of the device are improved, and the scientific research and test cost is effectively reduced.

The invention discloses a protective film tensile strength detection device and method, and relates to the technical field of protective film strength detection, the protective film tensile strength detection device comprises a transverse moving mechanism and a vertical moving mechanism; an outer side mounting seat is mounted on one side of the vertical moving mechanism in a matched manner, and a laser cutter is arranged in the outer side mounting seat; according to the laser cutting device, when a cylinder rod of the double-rod air cylinder contracts, the lifting base drives the laser cutter to move upwards, in the upward moving process, an ejector rod can eject a ball in a U-shaped groove to roll, the ball generates downward pressing force on a downward pressing rod, and a transverse pressing rod arranged at the end of the downward pressing rod is pressed on a pressing cam; due to the arrangement of the rubber plate, a certain deflection allowance is formed when the buckle and the clamping column are clamped and fixed, so that the clamping of the protective film can be ensured, and the protective film is prevented from falling off during a tensile test; after the tensile test is finished, the clamping column is manually pulled towards one side, so that the clamping between the buckle and the clamping column can be released, the broken protective film can be detached, the structure is simple, and the operation is convenient.

The invention discloses a broken sample anti-adhesion and waste taking device and method under an automatic mode of a tensile testing machine, and relates to the technical field of tensile testing machines. The clamp comprises a clamp body, a horizontal pushing type driving mechanism, a clearance, a gas spring ejection mechanism, a manipulator and a control system. A gap (delta = 30mm) is reserved to form a manipulator operation window, so that the problem of failure in grabbing of the fractured sample is solved; the gas spring ejection mechanism pushes the ejection head to extend out by 3mm with the thrust of 20N, and the adhered sample is forcibly separated; the clamping force of the horizontal pushing type driving mechanism reaches 30 MPa, and the maximum opening stroke exceeds 100 mm. All the components are coordinated through a PLC, the processes of sample feeding, tensile sample breaking treatment and separation and recovery are completed, the clamping face state is detected in real time through a laser obstacle avoidance sensor, and operation safety is guaranteed. Manual intervention is eliminated, the automatic compatible defect is overcome, and the automatic testing efficiency of the tensile testing machine is improved.

The invention belongs to the technical field of concrete testing, and particularly provides mechanical property testing equipment and a detection method for recycled aggregate concrete. The mechanical property testing equipment for the recycled aggregate concrete comprises a machine body, a reversing unit, a pressure testing unit and two tension testing units, the pressure testing unit is arranged in the vertical direction, and the two tension testing units are arranged in the horizontal direction and do not interfere with each other in spatial position. The reversing unit can clamp a test piece and drive the test piece to move between the vertical direction and the horizontal direction, the placement state of the recycled aggregate concrete test piece is switched and changed in real time, and the flexibility of the equipment during mechanical property testing is improved; the recycled aggregate concrete test piece can meet the requirements of two different test items of compressive strength test and tensile strength test.

The invention relates to the technical field of nickel-based superalloy grain segmentation and extraction, in particular to a nickel-based superalloy grain segmentation and extraction method based on a VGG and U-Net fusion model. The method comprises the following steps: preparing an Inconel 740H high-temperature alloy sample; carrying out an in-situ tensile experiment according to the manufactured sample, and observing the microstructure by using a scanning electron microscope in the experiment process; acquiring image data according to different stages of the experiment; performing data enhancement on the acquired image according to the brightness contrast; marking according to the characteristics of the crystal grains to be segmented; obtaining a reference image data set according to the annotation file; performing normalization processing according to the reference image data set to obtain a data set; designing a feature extraction module according to the VGG network model; designing a feature fusion module according to the U-Net network model; carrying out fusion according to the two designed modules to obtain a V-Unet fusion model; designing a loss function according to gray information and structural information of the grain boundary area of the reference image grain relative to other areas, and obtaining a loss function weight of the grain boundary area of the reference image grain; calculating according to the weight of the loss function to obtain model feedback; training according to the V-Unet fusion model to obtain a model; carrying out grain segmentation extraction on an Inconel 740H high-temperature alloy scanning electron microscope image according to the model; performing morphological post-processing according to a segmentation extraction result to obtain a grain image result; and performing statistics and data analysis according to a grain image result. The method can be used for segmenting, extracting and counting the same type of grains at different positions of the nickel-based superalloy and refining the grains to improve the mechanical property of the superalloy, and has great significance.

The invention provides an intelligent evaluation method for mechanical properties of a carbon fiber composite material, and relates to the technical field of material performance analysis, and the method comprises the following steps: evaluating the performance dispersion of a current batch of samples according to a fiber agglomeration area proportion and a carbon fiber monofilament diameter, and comparing the performance dispersion with a preset dispersion threshold, identifying a non-manufacturability discrete risk level; determining the tensile strength value of each sample through a tensile test, performing statistics to obtain a strength mean value and a strength standard deviation, performing matching analysis on the performance dispersion, the strength mean value and the strength standard deviation, and extracting the fiber reinforcement efficiency; performing weighted fusion processing on the fiber reinforcement efficiency and the fiber agglomeration area proportion to obtain a current batch fiber form comprehensive index, comparing the current batch fiber form comprehensive index with a historical batch, and identifying a fiber form change amplitude; and evaluating the quality consistency degree among the batches according to the strength deviation value and the dispersion difference among the batches, and identifying the non-manufacturability discrete source.

The present invention relates to the technical field of spinning processing, and specifically discloses a tensile strength detection device for gauze in spinning processing, which includes a bottom plate. A first fixing plate and two second fixing plates are installed on the top of the bottom plate. Clamping mechanisms are arranged above the two second fixing plates, and an automatic feeding mechanism is arranged above the first fixing plate. Columns are installed at the four corners of the top of the bottom plate. A third fixing plate is jointly installed at the tops of two cooperating columns. An installation plate is arranged at the bottom of the two third fixing plates, and a cutting mechanism is arranged at the bottom of the installation plate. In this invention, during the process of detecting the tensile strength of the gauze, with the aid of the cutting mechanism and the cooperation of multiple components of the automatic feeding mechanism, different situations in the actual use process can be simulated for the gauze to be detected, so that the tensile strength of the gauze can be detected more comprehensively, and the credibility and authenticity of the tensile strength detection of the gauze can be improved.

The utility model discloses a film tensile strength detection stationary fixture, relates to film stationary fixture technical field, including tensile testing machine, moving plate and clamping subassembly, the clamping subassembly includes crossbeam and two chuck, the opposite side of two chuck is equipped with the groove, the bottom end center of crossbeam is fixedly equipped with the magnet block A, the magnet block A is equipped with the magnet block B, and the magnet block B is equipped with the magnet block B; a magnetic attraction block B is attracted to the bottom end of the magnetic attraction block A through magnetic force, and the bottom end of the magnetic attraction block B is fixedly connected with a fixing frame. The clamping positions of the upper end and the lower end of the thin film are fixed and aligned, the accuracy and repeatability of tensile strength detection are improved, the next thin film is rapidly fixed when multiple groups of thin films are tested, the operation convenience is improved, and the time for replacing thin film samples when the multiple groups of thin films are tested is shortened. The problems that the centering performance is poor when the thin film samples are clamped, and the accuracy and repeatability of sample inspection are poor due to the fact that clamping positions possibly have deviation when multiple thin film samples are detected are solved.

The invention discloses a printed matter binding quality monitoring control method and system, a medium and a product. According to the method, binding defect data are collected through page turning equipment, a binding quality distribution diagram is generated by combining a tension test, whether the firmness of the book reaches the standard or not is judged, partial enhancement processing is conducted on insufficient sections, and it is ensured that the binding quality reaches the standard. According to the method, a real use scene is simulated by means of automatic page turning equipment, binding defect data at different turning angles are obtained, the tensile strength data obtained by tension testing equipment is combined, the phenomena of loosening and falling of binding parts caused by repeated turning in subsequent use are simulated, and dynamic evaluation of binding quality is achieved. And the binding part is divided into a plurality of stress sections, so that the binding part can be finely divided, and a basis is provided for subsequent local enhancement treatment. According to the multi-dimensional data acquisition and analysis mode, the defects of a traditional static detection method are overcome, and the comprehensiveness of a detection result is improved.

The invention discloses a battery adhesive testing method, system and equipment, and the method comprises the steps: constructing a multi-layer composite test sample containing a to-be-tested adhesive based on the structure position of the to-be-tested adhesive in a battery, and carrying out the tensile test and shear test of the multi-layer composite test sample, obtaining a tensile test force-displacement curve and a shear test force-displacement curve; obtaining a tensile property parameter of the adhesive to be tested according to the tensile test force-displacement curve, and obtaining a shear property parameter of the adhesive to be tested according to the shear test force-displacement curve; constructing a cohesive force model corresponding to the to-be-tested adhesive according to the tensile property parameters and the shear property parameters, and performing failure simulation on the to-be-tested adhesive according to the cohesive force model; the rigidity damage coefficient and the fracture energy of the to-be-tested adhesive are calculated according to the failure simulation, the failure test result of the to-be-tested adhesive is obtained according to the rigidity damage coefficient and the fracture energy, and the failure test accuracy is improved.

The invention discloses a quality detection device for a steel structure frame, and belongs to the technical field of quality detection, the quality detection device comprises a tension testing machine, and also comprises a support plate arranged on the tension testing machine; the feeding mechanism is arranged above the supporting plate and is used for feeding the sample; the moving mechanism is connected with the supporting plate, and a locking mechanism is connected to the moving mechanism; the moving mechanism is used for driving the locking mechanism and the sample to horizontally move, and the locking mechanism is used for clamping or loosening the sample under the moving cooperation of the moving mechanism; according to the scheme, only the sample needs to be placed in the feeding mechanism, the sample is automatically clamped and fixed and is subsequently released and unloaded in the process of driving the locking mechanism to move through the moving mechanism, the automation degree is high, manual active operation is not needed, the operation difficulty is reduced, a large amount of labor force and time are saved, and the working efficiency is improved. The detection efficiency is obviously improved, the subsequent detection work is facilitated, and the practicability is relatively high.

The invention relates to a method for evaluating the influence of hydrogen and anode dissolution coupling on stress corrosion fracture of pipeline steel, which comprises the following steps: (1) respectively carrying out slow strain rate tensile tests in an acid environment and a nitrogen environment, and determining the damage degree of the acid environment on the mechanical property of a pipeline steel sample; (2) carrying out potentiodynamic polarization curve test on the pipeline steel sample by respectively adopting slow-rate scanning and fast-rate scanning, and determining the potential range of a stress corrosion sensitive area; (3) respectively carrying out constant potential slow tensile test on the pipeline steel sample in an acid environment under the anode dissolution independent action starting potential and the hydrogen induced cracking independent action starting potential, and determining the damage degree of the anode dissolution and the hydrogen induced cracking to the mechanical property of the pipeline steel; and (4) determining the influence degree of the anode dissolution and hydrogen coupling effect on the stress corrosion fracture of the pipeline steel sample in the acid environment and the stress corrosion fracture contribution ratio. The method can accurately and quickly evaluate the stress corrosion resistance of the pipeline steel.

The invention discloses a tight-lock coupler intelligent tensile testing machine and a testing method thereof, and belongs to the technical field of tight-lock coupler test.The tight-lock coupler intelligent tensile testing machine comprises a mounting bottom plate and an electric control cabinet, and a support for supporting a tight-lock coupler to be detected is mounted on the surface of the mounting bottom plate; a tensile connecting frame for connecting the tight-lock coupler is mounted on the surface of the bottom plate on one side of the support, an integrated design of'tensile force detection and visual detection 'is innovatively adopted, mechanical parameter acquisition and visual deformation observation are combined, traditional mechanical data such as tensile force and displacement are obtained, and visual characteristics such as fine deformation and crack initiation are captured; precise synchronization of pulling force application, displacement collection and camera shooting is achieved through the synchronous controller, the real-time corresponding relation of pulling force-displacement-visual deformation is established, the problems that an existing device is single in detection dimension and poor in data relevance are solved, and the potential quality hazard checking capacity and the persuasion of a detection result are improved.

The invention discloses a method and device for detecting the tensile property of a fastener, and the method comprises the steps: obtaining the attribute parameters of a to-be-detected fastener, and installing the to-be-detected fastener in a clamping mechanism of the tensile property detection device; starting the tensile property detection device, carrying out stress stretching on the fastener to be tested according to a preset stretching rate, carrying out synchronous processing on collected stretching stress data and deformation image data, then carrying out noise removal and data smoothing processing on the stress data, and carrying out image preprocessing on the deformation image data; the method comprises the following steps of: analyzing deformation image data, extracting key deformation characteristics, constructing a stress-deformation model, analyzing to obtain a critical deformation point, judging an abnormal deformation point in a tensile test process, calculating to obtain a maximum stress value through the critical deformation point, and correcting the maximum stress value by adopting the abnormal deformation point, so as to obtain a tensile test result. The tensile property index of the fastener is obtained; and the accuracy and the reliability of the tensile property detection of the fastener are greatly improved.

The present invention relates to the field of pressure testing technology, and in particular to a protective film performance testing device and a testing method thereof. The device comprises: two side panels respectively arranged on both sides of a frame; a partition clamping mechanism, arranged on the side panels, for partition clamping of the test film body; a puncture mechanism, arranged on an assembly plate, and the puncture mechanism comprises a straight rack symmetrically arranged on the front side of the two movable plates. By setting up a partition clamping mechanism and a puncture mechanism, the partition clamping of the test film body is achieved, so that the device can synchronously perform a performance test combining stretching and puncture on the film body, so as to simplify the test process and shorten the test cycle; during the stretching test, the puncture mechanism will be synchronously turned on to perform a real-time puncture test on the film body, and the puncture rods with an upper and lower staggered layout will be used to perform progressive multi-point puncture, so as to perform continuous and accurate puncture tests on different positions of the same section of protective film, thereby enhancing the comprehensiveness and reliability of the test data.

The invention discloses a belt conveyor belt detection device and a using method thereof, and relates to the technical field of belt detection.The belt conveyor belt detection device comprises a tensile testing machine body, a detection mechanism is arranged on the tensile testing machine body and comprises a detection control box, and the detection control box is fixedly connected to one side of the tensile testing machine body; the movable cross beam is located in the middle of the tensile testing machine body, the fixed cross beam is fixedly connected to the bottom of the tensile testing machine body, the bottom of the movable cross beam and the top of the fixed cross beam are both connected with driving assemblies, and tension sensors are arranged between the movable cross beam and the corresponding driving assemblies and between the fixed cross beam and the corresponding driving assemblies. The clamping mechanism is fixedly connected to one side of the driving assembly. According to the rotatable clamping assembly, a proper clamp assembly can be conveniently selected according to the outline of a belt, so that better clamping and fixing are facilitated, and meanwhile, the clamp assembly can be conveniently replaced after being abraded or damaged.

The utility model aims to provide the tensile testing device, so that the fracture times of an object to be tested under different stress amplitudes can be quickly tested; in order to achieve the purpose, the tensile testing device comprises a frame, a fixed pulley is rotatably mounted at the top of the frame, a rope matched with the fixed pulley is arranged on the fixed pulley, and the rope bypasses the top of the fixed pulley; the two ends of the rope extend downwards along the two sides of the fixed pulley respectively, so that one end of the rope is connected with a sliding block, a driving device controls the sliding block to reciprocate in the sliding rail in the direction of the rope, and the other end of the rope is connected with an object to be detected through a clamp. The rope is provided with an elastic section and a force measuring device, the frame-shaped frame is provided with a distance measuring device and a counter, the distance measuring device is used for monitoring the deformation quantity of the object to be measured, and the counter is used for recording the repeated movement times of the sliding block.

The invention provides constructional engineering reinforcing steel bar quality detection equipment, and relates to the technical field of reinforcing steel bar quality detection.The constructional engineering reinforcing steel bar quality detection equipment comprises a detection table, clamping assemblies are arranged at the two ends of the top of the detection table, each clamping assembly comprises a vertical plate, the vertical plates are fixed to the two ends of the top of the detection table, and shaft rods are rotationally installed on the inner side surfaces of the vertical plates through bearings; a driving motor is fixed to the outer end of a vertical plate on one side of the detection table, the output end of the driving motor is fixedly connected with the shaft rod, two limiting assemblies are symmetrically arranged on the surface of the middle of the detection table, each limiting assembly comprises a base, and the bases are fixed to the detection table. Two steel bars of the same specification can be fixed at the same time through the clamping assembly and the limiting assembly on the detection table and are used for bending resistance detection and tensile test respectively, independent tests of the two steel bars do not affect each other, the time for replacing the steel bars is saved, and the quality detection efficiency of the steel bars of the same specification is higher.

The invention discloses a hose quick connector testing device which comprises a U-shaped frame, a supporting frame, a pipeline rotating mechanism, a downward pressing pipeline mechanism, a left side pipeline clamping mechanism, a right side pipeline clamping mechanism, a left side compression and tensile testing mechanism and a right side compression and tensile testing mechanism. The U-shaped frame is arranged above the pipeline rotating mechanism, the pipeline pressing mechanisms are distributed on the U-shaped frame in a bilateral symmetry mode, and the left side compression and tensile testing mechanism, the left side pipeline clamping mechanism, the right side pipeline clamping mechanism and the right side compression and tensile testing mechanism are distributed in a bilateral symmetry mode with the U-shaped frame as the center. According to the invention, the downward pressing angle can be adjusted, so that the quick joint and the test pipeline bear pressure or bending from different angles, the comprehensiveness of a test result is ensured, the performance of the joint in a real use scene is conveniently and accurately evaluated, and the universality and flexibility of equipment are enhanced.

The utility model belongs to the technical field of wire harness testing devices, and discloses an automobile wire harness stretching testing tool which comprises a rack, a fixing seat is fixedly installed at the lower end of the rack, and a clamping mechanism is fixedly installed on the upper surface of the fixing seat. The automobile wire harness stretching test tool comprises a machine frame, a first air cylinder fixedly installed at the top of the machine frame, a movable plate fixedly installed at the end of an output shaft of the first air cylinder, and a second air cylinder fixedly installed on the left side and the right side of the middle of the machine frame. In the one-way test process, the middle of the wire harness is stretched towards the two sides through simultaneous contraction of the two second air cylinders, the wire harness cable part is fixed through the clamping mechanism, the moving plate is driven to move upwards through contraction of the first air cylinders, the wire harness is stretched through the mounting block in the process, and therefore the stretching test of the wire harness is achieved; therefore, a multi-direction tensile test is performed on the wire harness, and the test accuracy of the wire harness is improved.

The invention provides a composite bag tensile strength quality inspection platform convenient to fix, and relates to the technical field of composite bag quality inspection, the composite bag tensile strength quality inspection platform comprises a movable positioning frame and a temperature adjusting water tank, the middle positions of the two ends of the movable positioning frame are provided with driving cylinders, and the movable positioning frame is movably located in the temperature adjusting water tank; the front side and the rear side of the movable positioning frame are provided with top and side face penetrating type guide sliding grooves. A support is installed on the outer side of the guide block, a driving cylinder is installed on the outer side of the guide block through the support, the output end of the driving cylinder penetrates through the interior of the guide block, and a fixing rod is installed on the top of the guide block. The bag opening, the bag bottom and the two side edges are fixed through the storage pipes and the deformation fixing blocks in the non-deformation state of the composite bag, the tensile strength of the composite bag is comprehensively subjected to quality inspection, the testing process is smoother and more efficient, and the problem that it is difficult to comprehensively evaluate the tensile strength of the composite bag through a result obtained through one-way tensile testing is solved.

The application provides a kind of automobile fastener wire material tension testing device, it is related to tension testing device field, comprising: indicating component, the indicating component is by conversion mechanism and displacement sensor composition, test component can realize the tension testing of automobile fastener wire material, material is in the tension testing simultaneously, indicating component can real-time monitoring the deformation degree of material, test data is comprehensive and efficient, and indicating component can automatically control the opening and closing of deformation monitoring function according to test state, solve the single test effect of the tension testing device of existing automobile fastener wire material, since automobile fastener wire material has ductility, existing tension testing device can not record monitoring the deformation of material when testing, test data is not comprehensive enough.

The invention provides a stress and temperature detection method based on a multi-angle Lamb wave acoustic elastic effect, and belongs to the technical field of nondestructive detection.The method comprises the steps that a Lamb wave group velocity variation approximate model is built based on the influence of loading stress and temperature on the sample size; based on the acoustic elastic effect, a Lamb wave group velocity variation detection model is constructed; the method comprises the following steps: arranging a preset multi-angle piezoelectric patch based on a preset experimental sample, fixing the experimental sample on a tensile testing machine to obtain a stress experimental system, combining a Lamb wave group velocity variation approximation model to obtain a parameter change condition, verifying a detection model, and performing formula parameter inversion to obtain a stress test result. Solving unknown stress and temperature by using a verified Lamb wave group velocity variation detection model; the method solves the problems that the detection result of the existing stress detection method is greatly fluctuated along with the temperature change, the precision is low, the influence of the stress direction is difficult to accurately calculate, and the temperature influence is neglected.