46 results about "Material Stretched" patented technology

The invention belongs to the technical field of material tensile tests, and particularly relates to a building material tensile strength testing device which comprises a testing device body, a shell is arranged above a supporting frame, a conveying mechanism is arranged on the rear side of the shell, and a partition mechanism is arranged at the tail end of the conveying mechanism. A partition mechanism is arranged in the shell, a material taking and placing mechanism is arranged on one side of the partition mechanism, stretching detection mechanisms are arranged in the positions, located on the two sides of the partition mechanism, of the shell, a mounting assembly is arranged on one side of the driving assembly, a clamping mechanism capable of being transversely adjusted in a sliding mode is arranged on the front side of the mounting assembly, and a pressing mechanism is arranged on one side of the clamping mechanism. According to the invention, stretching detection and strength detection functions are integrated, the use functionality of the device is improved, smooth proceeding of different detection work is ensured, the automation degree of the device is improved, the investment of labor cost is reduced, the labor intensity is reduced, the working progress is improved, and the use requirements are met.

The invention discloses a composite material tensile sample reinforcing sheet bonding tool and a bonding method thereof. The bonding tool comprises a clamping plate, an upper top plate and a lower top plate, a plurality of screw holes are formed in the edge and the center of the clamping plate, and square cushion blocks with through holes in the centers are arranged at the positions of the screw holes in the two sides of the clamping plate; a plurality of sample grooves are formed in the clamping plate and penetrate through the clamping plate, and the sample grooves are matched with samples in shape; screw holes are formed in the edges and the centers of the upper top plate and the lower top plate; a plurality of reinforcing sheet grooves are symmetrically distributed in the upper sections and the lower sections of the upper ejection plate and the lower ejection plate along the vertical center line respectively, the reinforcing sheet grooves are matched with the sample grooves, a reverse ejection hole is formed in the center of each reinforcing sheet groove, and a glue overflow hole is formed in the corner of each reinforcing sheet groove. By controlling the position between the sample and the reinforcing sheet, fixing the bonding position between the sample and the reinforcing sheet and adopting pressurized demolding, the reinforcing sheet in the obtained composite material tensile sample is precise in bonding and excellent in bonding performance.

The present invention discloses a method, device, medium, and product for testing the tensile mechanical properties of metal materials, relating to the technical field of material mechanical property testing. The method comprises: obtaining a force-deflection curve of a target metal material; determining a first area and a second area based on a first deflection point, a second deflection point, and a third deflection point and the force-deflection curve; calculating the yield strength and tensile strength of the target metal material based on the first area and the second area; calculating material parameters based on the yield strength and tensile strength of the target metal material; and obtaining a true stress-strain curve of the target metal material based on the material parameters and the Hollomon formula. The present invention only requires simple processing of the force-deflection curve of a small punch test to quickly obtain the material's yield strength, tensile strength, and true stress-strain curve. The obtained results are highly accurate and the principle is simple, making them convenient for engineering applications.

The invention relates to the technical field of composite material testing, in particular to a recycling method and device for composite material tensile fragments, and the method comprises the steps that the bottom of a protective cover is adjusted to a preset inclination angle through an angle adjusting mechanism; covering a protective cover outside a clamping block for clamping the composite material in the tensile test device, so as to collect fragments generated in the tensile process of the composite material through the protective cover; the fragments in the protective cover are blown to the bottom of the protective cover through a plurality of air injection assemblies; and the fragments at the bottom of the protective cover are adsorbed through the movable suction cup and transferred to a preset recycling area outside the protective cover. According to the technical scheme, splashing fragments can be blocked through the protective cover, the fragments are guided to fall to the bottom of the protective cover in a concentrated mode, meanwhile, the fragments attached to the side wall of the protective cover and clamped in the grooves of the clamping blocks are blown through the air injection assemblies, and the collection efficiency of the composite material tensile fragments is improved.

The utility model discloses mechanical stretching stamping equipment for an aluminum extrusion part, which relates to the technical field of aluminum extrusion part production and comprises a fixed mounting base plate, a stamping die plate is detachably mounted at the top end of one side of the fixed mounting base plate, and a stretching plate is fixedly connected to the top end of the side surface of the fixed mounting base plate. The stamping die disc is directly mounted on the fixed mounting base plate in a buckled mode, the aluminum materials stretch into the fixing frame through the feeding arrangement groove, the position, in the fixing frame, of the threaded extrusion rod is rotated by rotating the top disc, and the aluminum materials are extruded and fixed through the extrusion disc; the two sides clamp and fix aluminum materials at the same time, the stretching driving motor controls rotation of the threaded driving rod, so that the sliding adjusting base plates are directly controlled to slide at the top end in the stretching disc to adjust the positions, and the distance between the sliding adjusting base plates on the two sides is adjusted, so that stretching operation of the aluminum materials can be achieved.

The invention provides a metal material tensile mechanical testing device, and belongs to the technical field of mechanical testing. The problems that an existing clamping structure is complex, and the sample clamping process is tedious in operation are solved. According to the metal material tensile mechanical testing device, tensile testing assemblies slidably arranged on guide columns are arranged above and below a workbench, a rectangular groove is formed in the front side wall of the middle of the workbench in the width direction of the workbench, and scales are arranged on the portion, located on one side of the rectangular groove, of the upper surface of the workbench in the length direction of the rectangular groove; a front pressing block and a rear stopping block which can slide front and back are arranged in the rectangular groove, and the front pressing block can move out of the rectangular groove from a front end opening of the rectangular groove. The stretching test assembly comprises a stretching body, a containing groove is formed in the middle of the end, facing the workbench, of the stretching body, and clamping limiting blocks capable of sliding in the left-right direction are arranged at the end and located on the left side and the right side of the containing groove. The structure solves the problems that the clamping structure in the device is complex and the sample clamping process is tedious to operate.

The invention discloses a method for constructing a digital twinborn model in a tensile damage process of a titanium-clad steel material, which is characterized by comprising the following steps of: S1, performing geometric modeling and grid division on a titanium-clad steel sample to be analyzed, setting boundary constraint, defining titanium steel contact and optimizing load distribution so as to establish a finite element model of a titanium-clad steel composite structure; s2, performing titanium-clad steel tensile test finite element analysis according to the titanium-clad steel composite structure finite element model, and establishing a titanium-clad steel sample tensile damage simulation model; s3, parameterizing an input quantity and an output quantity in the titanium-clad steel sample tensile damage simulation model by adopting an ANSYS Workbench platform, and then carrying out experimental design; s4, performing order reduction on the titanium-clad steel sample tensile damage simulation model subjected to experimental design by adopting a Response Surface Method response surface method to generate an order reduction model FMU file, and importing the order reduction model FMU file into ANSYS Twin Builder to construct a titanium-clad steel tensile damage model digital twin model; and S5, evaluating the digital twin model of the titanium-clad steel tensile damage model, and then carrying out titanium-clad steel tensile damage analysis. According to the method, the mechanical property data of the titanium-clad steel sample is obtained in the virtual space mapping model, and the entity operation state and the virtual space mapping result are comprehensively analyzed, so that the deep research on the tensile damage of the titanium-clad steel sample is finally realized, and the stability and the safety of the titanium-clad steel material in ocean engineering equipment are ensured.

The present invention discloses a pressure processing device, comprising a lower die set and an upper die set. The lower die set is used to place a circulation tooling on which a component to be processed is placed. The upper die set is arranged above the lower die set. The upper die set and the lower die set can move relative to each other in the vertical direction. The upper die set includes a pressing structure. The pressing structure can stretch the flexible material in the component to be processed during the relative movement of the upper die set and the lower die set, and make the flexible material in the component to be processed fit with a shell part with an open upper end when the upper die set and the lower die set are combined. Through this pressure processing device, the flexible material is first stretched as a whole before the mold is closed, and then the flexible material stretched to a shape close to the final stretched shape is fit with the inner surface of the shell part when the mold is closed.

The utility model discloses a face guard leather material positioning fixture structure relates to face guard production technical field, including the first frame edge and second frame edge of symmetrical setting, and the second frame edge is installed in the both sides of first frame edge. First frame edge contains pedestal, and the upper portion slidingly connected slider of pedestal, and first frame edge and slider top all are equipped with the positioning boss column, for fixed face guard leather material. The top of pedestal is equipped with the limit boss and limit passage, and the passage is embedded with the dowel, and the dowel is connected with slider and is externally equipped with spring, and the both ends of spring respectively abut the dowel and the step protruding in the passage, realizes the buffer. The slider slides in the slide, and its tail end is equipped with second stop lug, and the first stop lug of the top of pedestal cooperates and restricts the sliding range. The cavity in the middle part of slider and slide jointly promote the sliding stability. This structure when face guard leather material forming, through the slider displacement relief leather material stretch, reduce the wrinkle, the leakage, promote face guard finished product quality and production efficiency.

A kind of anti-wave floating structure and the breakwater, protection system and offshore platform comprising it, the floating structure includes floating structure unit and connecting unit, the floating structure unit includes a plurality of anti-wave floating thick plate combination, it is a columnar structure in length direction, columnar structure cross section shape is triangle, trapezoidal, rectangular, H, Y etc., the anti-wave floating thick plate includes thick plate body, reinforcing rib and protrusion;Two sides of the thick plate body are equipped with water-permeable hole, the protrusion is stretched or bent by the HDPE material of water-permeable hole position Forming;The reinforcing rib is the long strip structure made of HDPE thick plate, the reinforcing rib is fixedly connected with hollow fixing hole in the protrusion;By the arrangement and combination of multiple groups of the floating structure unit in the water surface needing protection and the connection anchoring, the problems of poor anti-wave performance, low overall structural strength, high construction, installation and operation and maintenance cost of traditional offshore floating structure are solved.

The invention relates to the technical field of composite material detection, and provides a composite material tensile strength detection device and method.The composite material tensile strength detection device comprises an assembly frame, a partition plate is transversely and fixedly connected to the middle of the interior of the assembly frame, and the interior of the assembly frame is divided into a detection cavity A and a detection cavity B through the partition plate; and a sealing door for sealing the detection cavity A and the detection cavity B is assembled on one side of the assembly frame. The invention also provides a method for detecting the tensile strength of the composite material, which comprises the following steps of: 1, assembling the positioning clamping plate with the corresponding shape on the carrying shaft rod according to the shape of the composite material; secondly, the two composite materials are arranged in the detection cavity A and the detection cavity B respectively, and the ends of the composite materials are positioned through positioning clamping plates. By means of the technical scheme, the technical problem that in the prior art, there is no effective environment simulation measure, and deviation occurs between measured data and specifically applied data very easily is solved.

The invention belongs to a plastic processing technology, and relates to a forming method for improving the cementing property of a titanium alloy paddle wrapping piece. The method is suitable for forming the non-uniform-section inverted-V-shaped narrow-cavity integrated titanium alloy wrapping piece with the torsion angle, and solves the problems that in the prior art, the requirement for the bonding condition of the titanium alloy blade wrapping piece is high, the roughness uniformity and deformation are difficult to guarantee through sand blasting after the narrow-cavity characteristic is formed, and the like; on the premise of meeting the material deformation amount required by hot forming, control over the roughness of material stretching in the hot forming process, material corrosion in the acid pickling process and the like is guaranteed, the roughness uniformity of the bonding face of the blade wrapping piece is improved, and the bonding success rate and bonding uniformity of the blade wrapping piece are improved.

The application provides a method for evaluating the cold-rolling workability of high-silicon non-oriented silicon steel and a production method of high-silicon non-oriented silicon steel. The evaluation method is as follows: after normalizing, rectangular tensile samples are taken from the edge and middle of the steel coil along the plate width; the samples are processed into samples with a width of b and a length of l0; the edge and middle rectangular tensile samples are respectively placed on a material tensile testing machine for tensile testing until the samples are broken, and the actual length of the samples when broken is recorded as l 边 and l 中 , and i=(l 边 -l0) / (l 中 -l0)×100% is calculated; the cold-rolling workability of the high-silicon non-oriented silicon steel is evaluated according to the calculated i value. When i is greater than or equal to 75%, the high-silicon non-oriented silicon steel can be smoothly produced by cold rolling; when 75%>i≥60%, the cold-rolling process needs to be optimized and the auxiliary cold-rolling process is used; when i is less than 60%, the cold-rolling production cannot be directly and smoothly completed, and the edge needs to be trimmed.

The present invention relates to a test assembly for material tensile shear performance testing, the test assembly comprising: a loading disc; and a clamp, the clamp comprising an upper end clamp and a lower end clamp, the upper end clamp and the lower end clamp clamping an edge portion of the loading disc from above and below respectively via respective clamping slots, the clamping slots of the clamp being shaped to fit the edge portion of the loading disc such that relative movement of the clamping slots and the edge portion is prevented when the clamp is clamped and the edge portion is allowed to slide along the clamping slots and the loading disc is allowed to rotate when the clamp is unclamped.

The utility model provides a tensile strength testing device for a high-temperature pipeline material, which is characterized in that a moving structure, a fixed structure and a driving structure are respectively arranged on a base, the moving structure is arranged on one side of the base and can slide relative to the base, and the fixed structure is arranged on the base. The fixing structure and the moving structure are arranged on the same side of the base, the fixing structure is connected with the base, the moving structure is pushed by the driving structure to move to achieve stretching, in addition, a fixing assembly is further arranged, the fixing assembly comprises an inclined press-fit module, and the inclined press-fit module is connected with the fixing structure. The inclined pressing module is used for gradually increasing the pressing force during stretching, the moving structure and the fixed structure are provided with the fixing assembly used for fixing a pipeline sample, and in the stretching process, due to the fact that the inclined pressing module gradually increases the pressing force on the pipeline sample, the pipeline sample is prevented from falling off; the problem that a pipeline sample is prone to falling off in the stretching process is solved, and the beneficial effects of being safe and stable are achieved.

The invention belongs to the technical field of material stretching testing, and particularly relates to an axial stretching device for a workpiece with internal pressure and a testing method. The axial stretching device for the workpiece with the internal pressure comprises a test tool used for clamping the workpiece, wherein the test tool comprises a baffle guide rail; the first baffle is fixedly arranged on the baffle guide rail; the second baffle plate is movably arranged on the baffle plate guide rail, a workpiece to be tested is arranged between the first baffle plate and the second baffle plate, and the workpiece to be tested is connected with a pressure supply system; a tension sensor is arranged between the first baffle plate and the second baffle plate, and after the second baffle plate moves relative to the first baffle plate until the workpiece to be tested can be pre-tightened, the tension sensor is zeroed.

The invention relates to the technical field of tensile tests, in particular to a metal material tensile property detection device which comprises a detection chamber, and the temperature in the detection chamber can be adjusted; the stretching mechanism is arranged in the detection chamber and used for stretching the sample in the transverse direction, the stretching mechanism comprises two clamps and a driving part, and the two clamps are movably arranged in the transverse direction; the material receiving groove is formed in the inner bottom of the detection chamber and is positioned below the clamp; the material pushing mechanism comprises a driving module and two material pushing parts, the two material pushing parts are located in the material receiving groove and can move relative to the material receiving groove in the transverse direction, and the driving module is used for driving the two material pushing parts to be close to or away from each other in the transverse direction; the detection unit is configured as follows: when the two material pushing parts push the end parts of the two sections of samples falling into the material receiving groove to abut against each other, the driving module stops acting immediately; therefore, hands can be prevented from being scalded, and the problem of inaccurate measurement caused by shortening of the sample after the sample is taken out for measurement can be avoided.

The application provides a biaxial stretching device for material stretching experiment, and relates to the field of load test benches, which comprises a base, a solid propellant arranged on the base and used for bearing the solid propellant, a plurality of sliding rails fixed on the base and arranged radially around the solid propellant, a plurality of sliding blocks respectively slidably connected to the sliding rails, a plurality of push rods, the top end of each push rod is movably connected to a bearing table, the bearing table is used for bearing downward pressure load, the other end of each push rod is respectively pivotally connected to each sliding block, and each stretching assembly has a chuck, each chuck is used for clamping the solid propellant from different directions. Through the limiting effect of the first speed limiting device and the second speed limiting device, the moving speed of the first chuck and the second chuck is different from the moving speed of the third chuck and the fourth chuck, that is, four different stretching loads can be applied to the solid propellant from four directions, so that the demand of stretching test can be met.

The utility model discloses an air suction structure for a wear-resistant fabric cutting device, and belongs to the technical field of fabric cutting. An air suction structure for a wear-resistant fabric cutting device comprises a working panel, a plurality of air suction holes, a plurality of air suction holes, a plurality of air suction holes, a plurality of air suction holes and a plurality of air suction holes, and is characterized in that the working panel is constructed into a hollow plate-shaped structure; one end of the first conduit is communicated with the working panel, and the other end is communicated with the vacuum pump; the material stretching pipes are arranged above the working panel, the two material stretching pipes are oppositely arranged, a plurality of material stretching openings are formed in the surfaces of the material stretching pipes, and the material stretching pipes communicate with the first guide pipe; the driving assembly is movably connected with the material stretching pipe so as to drive the material stretching pipe to move and rotate; in the material receiving state, the two material stretching pipes move in the direction close to each other and rotate; in the material stretching state, the two material stretching pipes move in the direction away from each other. The air suction structure for the wear-resistant fabric cutting device has the beneficial effect that the air suction structure for the wear-resistant fabric cutting device can stretch and flatten the fabric.

This invention belongs to the field of material mechanical property testing technology, and relates to a SiC f A high-throughput testing fixture and method for tensile proportional limit of SiC composite materials is presented. For small-sized Y-shaped end specimens, a corresponding fixture is designed to connect multiple specimens end-to-end, and the self-locking mechanism between the specimens and the fixture effectively transfers the testing machine load to the gauge length of each specimen. The tensile stress on each specimen's gauge length is determined through stress analysis, considering the fixture's self-weight. The tensile strain of each specimen is determined based on the average value of strain gauges attached to the front and rear surfaces of the specimen's gauge length during loading. Multiple SiC composites can be tested simultaneously in a single tensile loading operation. f The tensile stress-strain curve of SiC composite specimens is tested to determine the tensile proportional limit and tensile modulus. This greatly improves experimental efficiency and enables the determination of SiC... f High-throughput testing of the tensile proportional limit of SiC composite materials can ensure precise alignment of the specimen with the loading line of the testing machine and eliminate data dispersion sources related to specimen loading.

The invention provides an engineering material tensile experiment strain measurement method and a related device, and belongs to the technical field of engineering experiments. The method comprises the steps of obtaining an image in an engineering material stretching process; performing image segmentation on the image in the stretching process of the engineering material to obtain contour information of the engineering material; performing feature point matching on the contour information of the engineering material to obtain displacement change information of feature points on the surface of the engineering material in the stretching process; and obtaining a local strain measurement result of the engineering material based on the displacement change information of the feature points on the surface of the engineering material in the stretching process. The problem that the accuracy of strain measurement of the tensile experiment of the engineering material is not high is solved.

The utility model discloses material tensile property testing equipment, which relates to the technical field of material tensile property testing, and comprises a support frame, a hydraulic cylinder is fixedly arranged in the middle of the top surface of the support frame, two fixing seats are symmetrically arranged on the inner bottom surface of the support frame, and the two fixing seats are symmetrically arranged on the top surface of the support frame. Mounting discs are fixedly mounted at the output end of the hydraulic cylinder and the top ends of the two fixing seats correspondingly, the clamping assemblies and the mounting discs are connected through cooperation of the positioning discs of the clamping assemblies and the two positioning sleeves, and the two positioning sleeves are fixedly arranged on the surfaces of the mounting discs and the surfaces of the positioning discs in a sleeving mode through cooperation of the positioning assemblies and limiting pieces. Positioning bolts of the positioning assemblies are taken out of the corresponding limiting pieces, two positioning sleeves are taken down from the surfaces of the mounting disc and the positioning disc, and then the clamping assemblies can be disassembled, so that the disassembling and assembling efficiency of the clamping assemblies is improved, and under the cooperation of a supporting base, the clamping assemblies are clamped and fixed through the clamping assemblies; and the stability of the supporting frame during working and placing is improved.

The invention relates to the technical field of material tensile detection auxiliary devices, in particular to a tensile detection auxiliary device for a new butyl rubber material, which comprises a C-shaped frame and a fixing rod, the fixing rod is fixedly connected to the inner side wall of the C-shaped frame, and two shells are slidably connected to the fixing rod. Through cooperation of the correction blocks, the cylinder, the fixing block and other structures, the two correction blocks extrude the rubber test standard sheet, so that the rubber test standard sheet slides in along the end face of the shell, the fixing block and the cylinder are matched, when the rubber test standard sheet is placed, the bottom end of the standard sheet is fixed, and the bottom end of the standard sheet is fixed through the fixing block and the cylinder. The stress direction of the standard sheet and the direction of a tensile machine are completely kept consistent without any deviation through side surface and longitudinal three-point limiting, so that errors caused by sectional area change of the standard sheet due to inclined placement of personnel are avoided, and the accuracy of detection data is ensured.

The application discloses a simulation analysis method, device and equipment of stretching and shearing of ionomer material and a medium, relates to the technical field of molecular dynamics, and under a canonical ensemble, an interaction force and a mechanical model are introduced to optimize an initial box of an ionomer model; an electrostatic interaction potential is introduced, and under an NPT ensemble, a change in a size of the optimized box is monitored; when the change is within a preset change range, the size of the box is determined; whether the optimized box under the size of the box is in an equilibrium state is monitored; if the box is in the equilibrium state, the canonical ensemble is changed to continue simulation, and an ionomer equilibrium melt is obtained; the ionomer equilibrium melt is subjected to non-equilibrium stretching and non-equilibrium shearing, and a stress tensor, coordinates in a stress tensor and a strain process and coordinates in the stress tensor and the strain process are obtained; the coordinates are processed, and a change of the ionomer equilibrium melt is obtained, a coarse-grained molecular dynamics simulation of the ionomer material under stretching and shearing is realized, and the simulation analysis accuracy of the ionomer material under stretching and shearing is improved.

Compositions, systems, and methods for use in the manufacturing process of foamed sheets. Such processes generally involve extruding a composition and stretching the extruded material on a molding mandrel. The ratio of the diameter of the molding mandrel to the diameter of the extruder die is called the "blow-up ratio" (BUR). The compositions, systems, and methods according to the embodiments relate to blow-up ratios in the manufacture of cellulose ester foamed sheets, with the aim of providing maximum sheet yield without rupturing the extruded material.

The present application relates to the technical fields of aluminum alloy manufacturing, and particularly relates to a kind of aluminum material tensile forming equipment.It includes chassis, the chassis is slidably connected with two clamps of symmetrical distribution, the chassis is equipped with lifting platform below, the chassis is equipped with the electromagnetic slide rail of symmetrical distribution, the electromagnetic slide rail of symmetrical distribution on the chassis is slidably connected with two electric sliding frames of symmetrical distribution, the electric sliding frame is fixedly connected with the first connecting frame of symmetrical distribution, the first connecting frame is slidably connected with the first sliding frame.The present application is reciprocated straightening to aluminum material by the first sliding frame, and it is stretched to aluminum material by two clamps, the first sliding frame is straightened to aluminum material from the middle to both ends of aluminum material, the uniformity of deformation amount in the process of aluminum material stretching is guaranteed, the probability that aluminum material is damaged due to the fact that excessive tension needs to be applied to both ends of aluminum material caused by the bending of the middle of aluminum material is reduced, and then the quality of aluminum material after stretching is guaranteed.

The utility model relates to stretching equipment technical field especially a titanium -aluminium composite material stretching device, including frame, be equipped with a pair of the support of sliding setting on the frame, be equipped with the wedge groove on the support, be equipped with a pair of wedge clamp block in the wedge groove, the support body on the far end of two support is equipped with the drawing traction spare of removal respectively, the one end of drawing traction spare close to wedge clamp block has annular groove, the one end close to drawing traction spare on every wedge clamp block passes through a connecting piece and is connected with drawing traction spare, for a kind of stretching device, can realize to titanium -aluminium composite material and stretch, remove the stress generated in the composite process of titanium -aluminium composite material, after stretching, the crystal direction of titanium -aluminium composite material, material is consistent, can eliminate partial stress, improve the mechanical property of composite material, reduce the deformation of subsequent mechanical processing.

The invention relates to the technical field of tension measurement, in particular to a high-precision tension measuring device and method.The tension measuring device is provided with an adjusting assembly, the adjusting assembly comprises a protection cabinet, two sets of circulating pipelines are fixedly installed in the protection cabinet, and one ends of the two sets of circulating pipelines are both communicated with a protection box; and one side of the protection box communicates with a collection box, auxiliary assemblies are installed on the two sets of adjusting assemblies correspondingly, and the two sets of auxiliary assemblies comprise fans rotating in the protection box. The two groups of friction plates rub the cylindrical elastic plastic material in a reciprocating manner to promote the material to plastically flow, and the material flows to fill the sunken part due to stress concentration at the sunken part, so that the situation that the local stress of the cylindrical elastic plastic material is far higher than the average stress due to the sunken part on the surface of the cylindrical elastic plastic material is prevented; the deformation uniformity during the material stretching detection is influenced.

To solve the problems that, although a temperature measurement cable used to measure a temperature of a stored object in a silo is covered with a coating material to prevent the cable from coming into direct contact with the stored object, the coating material can expand due to friction force or the like when the stored object is removed, causing the vicinity of an expanded lower end to break and fragments to be mixed into the stored object, and that when expansion of the coating material is detected, the temperature measurement cable itself needs to be replaced.MEANS FOR SOLVING THE PROBLEM: By providing a coating material fall prevention part at a tip of a temperature measurement cable for a stored object in a silo to receive a lower end of the coating material, it is possible to prevent the coating material from expanding when it comes into contact with the stored object when the stored object in the silo is discharged. As a result, it is possible to prevent the tip part of the coating material from falling, reduce a frequency with which the temperature measurement cable needs to be replaced, and save the effort and cost of replacement.SELECTED DRAWING: Figure 2

The utility model discloses a composite material tensile test clamping device which comprises a workbench and a connecting plate, the outer side wall of the connecting plate is fixedly connected with a motor, and the output end of the motor is fixedly connected with a threaded rod. In the actual use process, after the motor on the connecting plate is started, the threaded rod is driven to rotate, the rotation of the threaded rod drives the connecting sleeve to start to move and drives one end of the first connecting rod and one end of the second connecting rod on the two sides to move upwards, and the first connecting rod is limited on the positioning column through the rotating rod, so that when the connecting sleeve moves upwards, the second connecting rod is driven to move upwards. The other end of the first connecting rod rotates towards the middle, and in the process that the other end of the first connecting rod rotates towards the middle, the clamping plate is driven to move towards the middle, so that the clamping effect on the composite material is achieved, and a first anti-skid pad on the clamping plate can effectively prevent the composite material from being disengaged; by means of the matching mode, the problems that in an existing device, clamping of the composite materials is not firm, and slipping is prone to occurring are solved, and effective clamping and fixing of the different composite materials are achieved.