128 results about "Test material" patented technology

The invention discloses a building material mechanical testing system based on multi-algorithm fusion, and belongs to the technical field of building material testing, and the system comprises an initial damage quantification module which is used for obtaining detection information of a tested material test piece before mechanical loading and generating a quantitative evaluation result; the loading and information acquisition module is used for applying a mechanical load to the tested material test piece with the generated quantitative evaluation result and acquiring a mechanical response signal and a microscopic state signal of the tested material test piece; the damage analysis module is used for calling a preset second data processing algorithm and analyzing and generating a dominant damage path; and the diagnosis and prediction module is used for integrating the associated data atlas and the dominant damage path information, generating a material performance diagnosis report and constructing a prediction model through a preset third data processing algorithm. According to the method, the initial damage of the tested material test piece is quantified, so that systematic deviation of a test result caused by neglecting the initial damage is corrected.

The invention provides a ground simulation test method and device based on ground irradiation source combination parameter optimization. The method comprises the steps that an in-orbit space irradiation environment is simulated, an orbit environment particle energy spectrum of a to-be-tested space orbit is obtained through calculation, and an in-orbit PKA distribution spectrum in a to-be-tested material is calculated based on the orbit environment particle energy spectrum; based on the obtained on-orbit PKA distribution spectrum, determining optimal combination parameters of one or more groups of ground irradiation sources through a specified optimization algorithm and fitting calculation, so that a PKA energy spectrum generated by the ground irradiation sources in the to-be-measured space material is matched with the on-orbit PKA distribution spectrum, and an optimal fitting energy spectrum is obtained; and calculating and determining a critical dose rate, and calculating to obtain an acceleration fluence and a maximum acceleration multiplying power for guiding a ground acceleration test so as to carry out a ground simulation test of the to-be-tested space material. According to the application, the combined parameters of the ground irradiation source are optimized, and a more accurate ground simulation test is realized.

The invention discloses a high-precision SMD MELF thermistor function testing machine. The high-precision SMD MELF thermistor function testing machine comprises a rack; the constant-temperature oil tank is arranged on the rack, and a temperature equalizing pump is arranged on the constant-temperature oil tank; the material distributing mechanism comprises a magnetic groove and a material distributing disc, the magnetic groove is formed in the rack, the material distributing disc is located at one end of the magnetic groove, the material distributing disc is rotationally connected to the rack, a plurality of first material grooves are formed in the material distributing disc at equal intervals in the circumferential direction of the material distributing disc, and a first magnetic block is arranged at one end of each first material groove; the test material distribution disc is rotationally connected to the rack, a plurality of second material grooves are formed in the test material distribution disc at equal intervals in the circumferential direction of the test material distribution disc, a second magnetic block is arranged at one end of each second material groove, the second material grooves are right opposite to the first material grooves at the transfer points of the material distribution disc and the test material distribution disc, and the partial area of the bottom of the test material distribution disc is located in the constant-temperature oil groove. Compared with the prior art, the MELF thermistor resistance testing device can solve the problems that an existing MELF thermistor resistance testing device is low in efficiency and poor in precision.

The utility model discloses a magnetic suspension type pipeline fluid viscosity detection device, which relates to the field of liquid detection, and comprises a material conveying pipe and a rotary viscometer body, the side wall of the material conveying pipe is communicated with a material taking pipe, the upper surface of the material conveying pipe is fixedly connected with a detection box, and the lower side of the detection box is communicated with the material taking pipe through an L-shaped pipe. The piston is driven by the two shifting plates to move in the material taking pipe, then the threaded rod is rotated, the threaded rod is in threaded connection with the threaded sleeve to drive the plug cover and the piston to move together till the end opening connecting position of the material taking pipe is completely plugged by the plug cover, at the moment, part of flowing liquid enters the material taking pipe, and then through pushing and extracting, the material taking pipe is opened. The whole operation process is rapid and convenient, outward sampling is not needed, the sampling time of a traditional testing method is saved, normal conveying of materials is not affected, more importantly, waste of the tested materials is avoided, and practicability is improved.

This invention belongs to the field of testing materials technology, specifically relating to a non-destructive testing device and method based on radiation. It includes a base and an XY-axis displacement mechanism connected to each other, and further includes: an X-ray tube and a filter collimation channel, vertically connected sequentially to the XY-axis displacement mechanism; a heat dissipation assembly disposed inside the X-ray tube; and a heat insulation locking assembly disposed inside the filter collimation channel and communicating with the heat dissipation assembly. The heat dissipation assembly contains multiple heat-conducting media distributed at designated locations within the X-ray tube, with one type of heat-conducting medium flowing sequentially from the heat insulation locking assembly, the X-ray tube, to the heat dissipation assembly. This invention improves the temperature uniformity of the X-ray base environment required for testing materials, solving the problem of radiation filter plates deviating from design values ​​due to accelerated oxidation at high temperatures, thereby improving the flaw detection accuracy during material testing.

The invention relates to an online diagnosis and early warning method for performance degradation of a multi-layer thermal insulation material in a liquid hydrogen temperature zone, and belongs to the technical field of extremely low temperature thermal insulation material testing. According to the method, an acoustic sensing module and a controllable micro excitation module are integrated on a traditional heat leakage testing system; the method comprises the following steps: collecting acoustic emission signals generated by a material under thermal cycle and active micro-excitation, extracting multi-dimensional characteristic parameters, and establishing a correlation diagnosis model of acoustic emission characteristics and the internal pre-tightening force state and macroscopic thermal performance of the material in combination with standard sample data in a known state; by utilizing the model, the internal mechanical contact state of the to-be-tested material can be evaluated in an online, lossless and real-time manner, and early warning can be performed on the degradation trend of the heat insulation performance of the to-be-tested material. According to the method, the defects of lagging and destructiveness of a traditional testing method are overcome, the root cause of performance degradation is monitored, and a guarantee is provided for reliability evaluation and service life prediction of the material.

The application discloses an accessory list generation method and device, equipment and medium, and relates to the technical field of computers, which comprises the following steps: obtaining an accessory bar code and a production task sheet, determining accessory information from the production task sheet, and comparing the accessory bar code with the accessory information; if the information comparison is passed, generating a serial number based on the accessory bar code, and saving the accessory bar code and the serial number to a local device; judging the accessory material type based on the serial number, if the accessory material type is non-test material, checking the serial number, if the checking is passed, generating an accessory list according to the accessory bar code and the serial number. Through the above technical scheme of the application, the material loss in the production process can be avoided, and the accuracy and traceability of the accessory list generation are improved.

The utility model discloses a temperature control device suitable for an ultra-fast cold and hot impact test box, and relates to the technical field of impact test boxes. Comprising a sleeve, and one side of the top of the sleeve fixedly communicates with an air inlet pipe; a vertical pipe is fixed on one side of the sleeve, and a plurality of vent holes are formed in a pipe body of the vertical pipe positioned in the sleeve; a supporting plate is fixed in the vertical pipe, and a plurality of air inlets are formed in a plate body of the supporting plate. When the cold and hot impact testing device is used, a material to be tested is placed in the cold and hot impact testing box and is positioned at the bottom of the temperature control device, the controller controls the heating wire to heat, outside air enters the sleeve through the air inlet pipe by virtue of air flow which is refrigerated by the compressor through the air pump, and then enters the vertical pipe through the vent hole; after the heating wire heats outside air, the outside air is directly discharged through the first air outlet hole so as to be in contact with the to-be-tested material, due to control over cold and hot air flows, the to-be-tested material is cooled and heated at ultra-fast speed, and the experiment efficiency is improved.

The invention relates to the technical field of oil and gas drilling, in particular to a trapping efficiency testing device for an explosion-proof engine. The device is characterized in that a set of testing device is provided for implementation of an explosion-proof engine trapping efficiency test, a testing material bin is of a detachable structure, the bin wall is transparent and visible, a set of testing particle flow sensor is arranged at a discharging port of the testing material bin and matched with a control system to control the gas amount of a gas inlet of the testing material bin, and the set discharging amount of the testing material bin is kept; the trapping net of the trapping box is of a detachable structure, and the requirement for installation of trapping nets of different test particle specifications is met. The device mainly comprises a gas flow controller, a test material cabin, a base, a charging hopper, a stop valve, a test particle flow sensor, a feeding pipeline and a trapping box. The device has the characteristics of safety, reliability, constant test particle flow and convenience in maintenance and cleaning.

The utility model relates to the technical field of material mechanics impact resistance experiments, in particular to a material mechanics impact resistance experiment device which comprises an experiment box, a base is connected to the lower surface of the inner wall of the experiment box in a sliding mode, and a splash-proof box is fixedly connected to the upper surface of the base. Four sliding blocks a and four clamping plates are driven by four air cylinders a to get close to each other to clamp and fix an iron ball, a servo motor a drives a screw a to rotate, the screw a rotates to drive a threaded sleeve a, a movable frame a and a movable frame b to move upwards, the height of the iron ball is adjusted according to experimental design, an electromagnet is powered off, and the iron ball is fixed. The iron ball falls onto the surface of an experimental material under the action of self weight to carry out an impact resistance experiment, and meanwhile, fragments generated by material crushing are blocked by the splash-proof box, so that the problems that when an existing material is smashed, the material is likely to shake and collide with other parts, the test result is inaccurate, and fragments are likely to fly out when the material is damaged to hurt experimenters are solved.

The present application belongs to the field of furniture production and manufacturing, and provides a wood material cutting tool wear and machining precision online monitoring method, which comprises: sharpness determination and wear amount calculation and analysis of handle milling cutter and drill bit; preparing test materials and tools, determining numerical control milling machine and measuring instrument equipment; based on the tool edge retreat amount on the tool wedge angle diagonal, as the cutting tool edge wear evaluation value; tool wear test; multi-source signal synchronous acquisition and signal preprocessing and noise reduction; multi-domain feature extraction and fusion; optimization algorithm suitable for tool wear prediction model establishment: constructing LF-SMA-RELM tool state monitoring and prediction hybrid model for predicting tool edge retreat amount; online monitoring and intelligent early warning; the present application realizes full-process monitoring and prediction of cutting tool wear state and machining precision change.

The application discloses an electronic product temperature cycle life test system based on data analysis and relates to the technical field of electronic product testing, solves the technical problem that the prior art cannot extract a harsh scene and integrate it into a temperature cycle scheme for temperature cycle test in combination with the use scene of an electronic product, and specifically relates to a use scene joint analysis unit which performs life test analysis on an electronic product in combination with the use scene of the electronic product, extracts a harsh scene and integrates it into a temperature cycle scheme for temperature cycle test, and tests the electronic product under a simulated use scene; a material failure analysis unit which performs material failure analysis on the electronic product; a material welding failure risk determination unit which determines the material welding failure risk of the electronic product and controls the material connection of the electronic product in a timely manner; and a micro deformation analysis unit which performs micro deformation analysis on the electronic product and ensures the usability of the connection of the overall material.

The utility model discloses a device for testing the performance strength of a refractory material, which comprises a box body, and an air purification component is fixedly arranged at the top in the box body. The motor drives the threaded sleeve to rotate, the threaded sleeve drives the threaded rod to move leftwards, the threaded rod drives the flame projector to move leftwards, the flame projector drives the sliding block to move leftwards on the surface of the sliding rod, the flame projector drives the gas conveying pipe to move leftwards, the gas conveying pipe stretches the telescopic hose, and the flame projector can only move leftwards and rightwards. The threaded sleeve can drive the screw rod with the fixed angle to move in the rotating process of the threaded sleeve, the threaded sleeve and the first gear can only rotate in situ through limiting of the clamping positioning plate, the first gear and the threaded sleeve cannot move left and right, and the advantage that various data can be tested is achieved; the distance between the flamethrower and the tested material is adjustable, and the material can be tested by flames of different distances in the testing process, so that the material testing effect is improved.

The application discloses a kind of heat insulation testing devices of heat insulation material, it is related to heat insulation testing device technical field, wherein, including support plate, the top of the support plate is fixedly installed hydraulic push rod, the bottom of the hydraulic push rod is fixedly installed connecting plate, the bottom of the connecting plate is fixedly installed first telescopic component near the position of four corners.The first motor is set in the application, the driving gear and the driven gear are engaged to rotate by the first motor work, and then the first rotating shaft is rotated, four fixed seats are rotated by the aid of connecting rod, four test benches are driven to position conversion, the effect that the material sample to be tested in test bench is position converted is realized, the effect that testing and material loading and unloading are carried out simultaneously is achieved, the purpose of multi-station testing and material loading and unloading integration is realized, so as to solve the problem that most heat insulation testing devices can only carry out single-station work at present, thus the problem that test efficiency is reduced to some extent is solved, and test efficiency is improved.

The utility model relates to a highway engineering inorganic binder stable material scouring test device, which belongs to the technical field of highway engineering and comprises a main body box, a partition plate is fixedly mounted in the main body box and divides the space of the main body box into a driving cavity and a test cavity, and a sliding plate mechanism is fixedly mounted in the test cavity. A test cylinder is placed at the top of the sliding plate mechanism, a compaction assembly is arranged at the top of the partition plate and in the driving cavity, and a control cabinet is installed on the left side of the main body box. According to the highway engineering inorganic binder stable material scouring test device, a box door of a test cavity is opened, a placement table is moved to the right side through a sliding rail, a detachable cover plate is arranged on a main body box, so that a test material is conveniently added into a test barrel on the placement table by opening the cover plate, and after addition is completed, the test material is taken out; and the placing table slides to the lower part of the compaction assembly, and then the compaction assembly is controlled to test the test cylinder. And the effects of being convenient to use and improving the working efficiency are achieved.

The utility model relates to the technical field of particulate matter detection, in particular to a particulate matter filtering material performance testing device which comprises a first round pipe and a second round pipe, a connecting cylinder is fixedly connected to one side of the first round pipe, a wind speed measuring probe is fixedly connected to the surface of the first round pipe, a filtering structure is arranged in the first round pipe, and a wind speed measuring probe is fixedly connected to the surface of the second round pipe. A wind pressure measuring probe is fixedly connected to the surface of the second round pipe, a fan is arranged on one side of the interior of the second round pipe, and a fixing structure is arranged on the other side of the interior of the second round pipe. The wind speed measuring probe, the filtering structure, the wind pressure measuring probe, the fan and the fixing structure are arranged and integrated in one set of device, the matching error caused by independently adjusting various parameters is solved, the operation difficulty is greatly reduced, the size of the device is effectively controlled, and the filtering structure and the fixing structure are arranged, so that the device is convenient to use. The service life of the filter screen is prolonged, and the to-be-tested material is more convenient to clamp.

The application relates to the technical field of material testing, and particularly relates to a digital twin management method and system based on multi-source data fusion. A test material is placed in a test environment with specified test conditions to collect multi-source monitoring data of the test material in the test environment. The multi-source monitoring data is fed back to a pre-established digital twin, and simulation data corresponding to various test conditions of the digital twin is recorded. The simulation data corresponding to various test conditions is arranged in a test time sequence to obtain test performance information flow of the digital twin. The material properties of the test material are analyzed based on the test performance information flow, and life cycle information flow of the test material in various working environments is constructed according to the analysis result.

The invention discloses a powder static elimination method based on a static sequence, and belongs to the technical field of powder static elimination, a corresponding sample static accumulation characteristic determination method is adopted, the static accumulation amount of target powder in sliding grooves made of different materials is measured under the same environment humidity, and therefore the static sequence of the target powder is constructed; selecting two chute materials which enable the powder to accumulate positive electricity and negative electricity from the electrostatic sequence, determining the length of each material section according to the product relation of the electrostatic accumulation amounts of the two chute materials, and alternately arranging the material sections at intervals along the direction vertical to the powder sliding direction to construct a pipeline; finally, the static electricity accumulation amount of the powder of the alternate material pipeline is tested through the test material static electricity accumulation characteristic determination method, and the static electricity elimination effect of the alternate material pipeline is verified. The method can effectively reduce the static accumulation level in the powder conveying process, and is suitable for static safety control of powder processing and conveying scenes.

The invention relates to the technical field of agriculture, and discloses a feed oat lodging resistance identification and evaluation method which comprises preparation work before identification, key identification steps and lodging resistance evaluation standards. The method is characterized in that the preparation work before identification comprises test material selection, test material screening and processing, field design, environment control, test field planning and planting, and instrument and tool preparation. According to the identification and evaluation method for the lodging resistance of the feeding oat, through systematic design of interference reduction in a preparation stage, full dimension in an identification stage and scientific quantification in an evaluation stage, the accuracy and comprehensiveness of an identification result are ensured, and extremely high industrial application guidance is achieved; the method can effectively support breeding of lodging-resistant varieties of the feeding oats, optimization of planting layout and upgrading of a cultivation technology, and has important practical value for promoting high-quality development of the oat industry.

The application relates to the field of material testing, in particular to a small punch test device for testing hydrogen-induced performance damage of materials under a hydrogen environment, which comprises an upper clamp, a lower clamp, a positioning cylindrical shell and a punch; the upper clamp and the lower clamp are screw-connected, the positioning cylindrical shell is arranged in a cavity of the upper clamp, and the punch is arranged in the positioning cylindrical shell; the upper clamp comprises upper and lower series-connected upper and lower cylindrical shells, and the upper clamp comprises, from top to bottom, a first cavity, a second cavity and a third cavity in sequence; electrolyte and a platinum sheet electrode are arranged in the upper cylindrical shell, a sample groove and a sealing ring groove are arranged on the top surface of the third cavity, the positioning cylindrical shell is arranged in the third cavity of the upper clamp, the positioning cylindrical shell protrudes from the upper clamp after being arranged in the upper clamp, and a disc is arranged on the lower part of the punch. The small punch test device for testing hydrogen-induced performance damage of materials under a hydrogen environment is easy to manufacture, install, use and maintain, and can quickly evaluate the hydrogen-induced mechanical performance damage degree of materials.

A heated drying type moisture meter capable of diagnosing the state of the device also considering factors other than the quality measuring section is provided. The moisture meter (100) comprises: a quality measuring section (2) that measures the quality of a test material; a heating section (3) that heats the test material; a control operation section (5) that controls the heating section (3) to heat until the quality change of the test material becomes below a prescribed threshold value, and calculates the moisture rate of the test material based on the quality change before and after heating; a clock (4) that measures the heating time; and a storage section (8); the control operation section (5) comprises: a standard material measuring section (52) that measures the moisture rate of a standard material for inspection as the test material, and measures the heating time; and an abnormality diagnosing section (53) that evaluates the measured moisture rate with reference to the theoretical moisture rate of the standard material, and diagnoses the presence or absence of an abnormality of the quality measuring section (2), and compares the measured heating time with a prescribed time stored in advance in the storage section (8) as a set heating time, and diagnoses the presence or absence of an abnormality of the heating section (3).

This utility model relates to the field of building material testing technology, specifically to a building load-bearing capacity testing device, including a box, a panel, and a material to be tested. The panel is located inside the box, and the material to be tested is placed on the surface of the panel. A U-shaped frame is provided outside the material to be tested. A first cylinder is installed on both sides of the U-shaped frame, and the piston rod of each first cylinder passes through the U-shaped frame and is fitted with a housing. A clamping plate is provided inside each housing, and the opposite surfaces of the clamping plates are in contact with the outer wall surface of the material to be tested. A second cylinder is installed between the panel and the box to drive the panel to move up and down. This utility model has a simple structure. An electric slide table can drive the U-shaped frame and the material to be tested to move laterally to adjust the testing position. After the panel is lowered, the material to be tested can rotate around the clamping plate, allowing for rapid flipping and further increasing the testing range.

The present application belongs to the technical field of titanium alloy processing, and relates to a heat treatment method for improving the strength and toughness matching of WSTi6421 titanium alloy. The heat treatment method determines the heat treatment holding time of the test material by measuring and drawing the temperature rising curves of different thickness positions of the test material; at the same time, three-stage segmented temperature rising and uniform temperature holding treatment are adopted to reduce the organizational differences; the test material is also subjected to aging heat treatment when being returned to the furnace to control the size of the lamellar alpha phase, so that the high strength, high plasticity and high toughness matching of the WSTi6421 titanium alloy is realized, and the heat treatment process of the titanium alloy with toughness index requirements can be popularized.

The application discloses a kind of intelligent test methods of bonding function of high-temperature bonding machine for connecting pipe, which relates to bonding performance test technical field.The intelligent test methods of bonding function of high-temperature bonding machine for connecting pipe, comprising: machine bonding test;Material bonding test;Performance test;Establish reliability evaluation model.The application obtains first test data by machine bonding test to preset bonding machine under preset first condition, obtains corresponding second test data of material bonding test by simulating actual production process to bonding machine by preset connecting pipe material;Corresponding performance index is obtained by performance test under second condition;Reliability evaluation model is established according to first test data, second test data and performance index, and the bonding performance of bonding machine is analyzed by reliability evaluation model, reaches the effect of the improvement of reliability in test process, solves the problem of low reliability in test process in prior art.

The utility model belongs to the technical field of material mechanics testing equipment, and particularly relates to a biaxial tensile fixture which comprises a fixture body. The clamping plate is detachably arranged on the bottom plate and is matched with the bottom plate to form a clamping head for clamping a test material; the two sides, close to each other, of the bottom plate and the clamping plate are provided with anti-skid textures used for limiting the test material. The device is simple and ingenious in overall structure, convenient to operate, favorable for improving the test efficiency, good in clamping stability and uniform in stress of a test material, and compared with a fishhook puncture fixing mode, the surface damage of the test material can be greatly reduced, and the situation that the test material is torn is prevented.

The invention provides an experimental method for digitally quantizing the appearance color of whole corn silage and application of the experimental method, and belongs to the technical field of corn silage evaluation.The method comprises the following steps of test material collection and test equipment preparation, single-factor test, single-factor analysis and quantitative analysis. The method comprises the following steps: taking the color of a base plate for color measurement, the aperture of a lens of used equipment, homogenizing time, exposure time and the thickness of a measured sample as standby elements for influencing the color measurement of the silage whole-plant corn, carrying out a single-factor test to determine the effectiveness and basic range of factors, and then carrying out design and development of an orthogonal test. Through variance analysis of an orthogonal test result, optimal process parameters for determining the color of the whole corn are determined, and test verification is carried out. Finally, the method for measuring the appearance color of the whole corn silage through digital quantification is established. In practical application, the method can provide core data support for standardized quality evaluation of the whole corn and promote the industry to establish a unified color grading standard.

The invention relates to the field of material dynamic performance evaluation, in particular to a device and a method for a material impact loading test, the device comprises a bearing table, a test platform, a laser speed measurement mechanism and an X-ray detection assembly, the laser speed measurement mechanism provides a high-sampling-rate speed signal through non-contact measurement, and the X-ray detection assembly is connected with the bearing table; the speed change process of the impact moment is accurately captured; the X-ray detection assembly is used for carrying out nondestructive detection on a test material by utilizing an X-ray in-situ detection technology, observing and analyzing change data of an internal structure of the material in real time by utilizing the penetrating power of high-energy X-rays, and carrying out real-time observation on the internal structure under the condition of not damaging a sample; the method provides more accurate measurement data; more accurate measurement data of the falling speed of the impact component are obtained, and time correlation analysis can be performed on the mechanical response of the test material and the X-ray image frame, so that a more accurate impact resistance detection result of the test material is obtained.

1. The name of the design product: video optical thermal expansion coefficient analyzer. 2. The use of the design product: the design product is used for testing the thermal expansion coefficient of materials. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses an asphalt segregation performance testing device. The asphalt segregation performance testing device comprises an accommodating pipe, a first plug, a second plug and the like, the containing pipe is formed by sequentially connecting a plurality of hollow pipes in series. The first plug and the second plug are arranged at the two ends of the containing pipe respectively. According to the utility model, the design of the split type accommodating pipe is adopted, so that the segmentation uniformity of an asphalt sample in the segregation test process is improved, and the accuracy of a test result is improved; meanwhile, the device can be repeatedly used, so that the consumption of test materials is greatly reduced, and the test cost is saved. Furthermore, a connecting pipe with a screen is adopted as a connecting piece of the hollow pipe, so that the device can be suitable for asphalt without fibers and asphalt containing fibers, and is wide in application range and high in practicability. In addition, the device also has the advantages of simple structure, low preparation cost, easiness in operation, difficulty in loss, universal parts, independent replacement and the like.

The utility model belongs to the field of building material detection, and discloses a building material bending strength detection device which comprises a detection table, a placing plate and a fixing mechanism, the fixing mechanism comprises a fixing frame, a rotating shaft, a guide rod and a reset spring, a sliding hole is formed in the side wall of the fixing frame, the guide rod is fixed in the sliding hole, and the rotating shaft is rotationally installed on the placing plate. The placing plate is located on the inner side of the fixing frame, the end of the rotating shaft extends into the sliding hole, the guide rod is slidably inserted into the rotating shaft, and the guide rod is sleeved with the reset spring; and the pressure mechanism is mounted on the detection table. Through the insertion of the rotating shaft and the guide rod, the rotating shaft can slide relative to the guide rod, that is, the fixing frame can press and limit to-be-tested building materials with different thicknesses, and the rotating shaft is rotatably connected with the placing plate, so that when the to-be-tested materials are pressed to be bent, the to-be-tested materials can be fixed. The end part of the to-be-detected material can drive the fixing frame to rotate synchronously and the fixing frame is far away from the placing plate by compressing the reset spring, so that the deformation of the to-be-detected material is abdicated, and the detection result is more accurate.