147results about How to "The test results are accurate" patented technology

The invention relates to a method for forecasting rock blasting damage depth of nuclear power projects. The method comprises the following steps of performing the blasting vibration testing to determine a site vibration attenuation rule; performing the sound wave testing to primarily determine the rock damage depth; performing the finite element numerical simulation, and calculating the rock particle vibration speed and rock blasting damage depth; respectively establishing the change rules of the particle peak vibration speed (1m away from a blasting source R) along with the rock blasting damage depth under the step blasting and pre-fracturing blasting types; substituting the explosive charging quantity Q0 of an actual section into the site blasting vibration attenuation rule and the change rules of the particle peak vibration speed along with the rock blasting damage depth, so as to forecast the blasting damage depth caused by the explosive charging quantity. The method has the characteristics that one part of site sound wave testing can be replaced with the numerical simulation, the site testing frequency is reduced, the field workload is reduced, and the construction efficiency is improved; the site blasting group hole effect is comprehensively considered, the forecasting is accurate, and the operation is convenient and rapid.

The invention discloses a test device and a test method for testing kinetic shear characteristics between pipe piles and grouting soil bodies. The test device comprises a vibration platform, a pipe pile model test box, a loading mechanism and a monitoring system, wherein the pipe pile model test box comprises a steel bottom plate, stacked steel frames, a limiting mechanism, pipe piles arranged in the steel frames, and a sandy oil body; guide chutes are formed between the steel frames; balls are arranged on the guide chutes; hard soil is spread on the steel bottom plate; the part between the pipe piles and the sandy oil body is filled with cement paste; sealing films are arranged on the inner walls of the steel frames; and the monitoring system comprises a displacement sensor, a strain rosette group arranged on the outer surfaces of the pipe piles, and a pressure box arranged in the sandy oil body. According to the device and the method disclosed by the invention, the box wall boundary influence can be well eliminated, the problem that a scale effect and a test model similarity ratio relationship are difficult to determine is solved, the test results are accurate, reasonable and reliable, and reliable basic data is provided for theoretical analysis and engineering practice.

The invention discloses a test system of a mobile phone antenna. The test system comprises a test rotary table, a loudspeaker antenna, an integrative tester, a frequency spectrum tester, a signal distributor, a radiofrequency signal attenuator, a data acquisition apparatus and a display. The test rotary table and the loudspeaker antenna are positioned in a microwave darkroom. The integrative tester, the frequency spectrum tester, the signal distributor, the radiofrequency signal attenuator, the data acquisition apparatus and the display are positioned outside the microwave darkroom. A mobile phone is placed on the test rotary table and is connected with the signal distributor. The loudspeaker antenna and the integrative tester are connected with the frequency spectrum tester. The integrative tester is connected with the display through the data collector, and is connected with the signal distributor through the radiofrequency signal attenuator. The signal distributor is connected with the frequency spectrum tester. According to the invention, through forming a set of closed loop test system with the loudspeaker antenna, the integrative tester, the frequency spectrum tester, the radiofrequency signal attenuator and the signal distributor, influence of signal attenuation and radiation on a test is reduced, and a test result is accurate.

The invention relates to a temperature controlling base for testing semi-conductive illuminant device, which is provided with temperature controlling function and avoids condensation of moisture. The invention comprises a temperature controlling device and a seal closure which is matched with the temperature controlling device, wherein testing specimens can be arranged into the seal closure and matched with the temperature controlling device. The distinguishing progresses of the invention are that the testing specimens is located in a comparative constant temperature status through an arrangement of the temperature controlling device, testing results are accurate, the testing specimens are separated form around circumstance through the arrangement of the seal closure, thereby effects of the around circumstance can be avoided, sealing effects of the seal closure is better through the arrangement of seal components, the arrangement of an extraction opening enables that a vacuum machine is connected with the seal closure through the extraction opening, air inside the seal closure can be extracted, vapor can be decreased, the vapor can be avoided to condense on the testing specimens.

The invention discloses a fine sand settling velocity detection method based on image grey. The fine sand settling velocity detection method comprises the following steps of: a, acquiring a detection device consisting of a settling container, a light source, a camera and a computer; b, performing grey-concentration calibration; c, performing image acquisition; d, performing concentration conversion; and e, calculating the settling velocity. The method is special for detecting the settling velocity of the group settlement silt in fine particle wash load type, the instantaneous settling velocity and the mean settling velocity of the sand in a sand river can be detected, and the method has the advantages that operation is easy and testing precision is reliable.

The invention provides a test bench for mechanical performance testing of a tire. The test bench comprises a test bench support frame, a lift transmission mechanism, a rotary transmission mechanism, a first support plate, and a pressure sensor. The lift transmission mechanism consists of a portal frame, two guide rails, and a hydraulic cylinder; the two guide rails are arranged on the support plate vertically; chutes are formed in the side support walls of the portal frame; sliding blocks are arranged at the side walls of the two guide rails; and on the basis of cooperation of the chutes and the sliding blocks, the rotary transmission mechanism can move to be lifted to drive the portal frame to make lifting reciprocating motion at the guide rails. The rotary transmission mechanism consists of a drive shaft, a drive motor, and a hub fixation unit; the hub fixation unit includes a first fixed plate and a second fixed plate that sleeve the drive shaft for fixing the hub; a protruding limiting part is arranged at the drive shaft; the first fixed plate is provided with a recessed limiting part cooperating with the protruding limiting part for limiting; and the drive shaft includes a first rotation shaft and a second rotation shaft that are in reverse threaded connection.

The invention discloses a fault location method for vibration and noise abnormality of a GIS combined electrical appliance in a substation. A GIS combined electrical appliance, a vibration test analyzer and a noise test analyzer are arranged. The GIS combined electrical appliance includes a circuit breaker, a bus, a disconnecting switch, a voltage transformer, a current transformer, and a lightning arrester. The invention provides a method for testing the vibration and noise of the GIS combined electrical appliance in a substation, thereby realizing accurate and comprehensive test result and providing the systematic and scientific test results for the production, debugging, operation and maintenance personnel. A method for vibration and noise fault analysis and location is also put forwardby combining the test method, so that the vibration and noise faults can be analyzed according to the test results to find out coherence of the key factors causing the problems and thus the fault location is realized. The fault location method has the high innovation; the blank in the field related with the vibration and noise of the current GIS combined electrical equipment is filed; and the safe and stable operation of the 110-kV substation equipment is guaranteed effectively and the high-efficiency maintenance is realized.

The invention discloses a method for determining refrigerant quantity of a refrigerating system. The method comprises the following steps: 1, pre-storing a correspondence table of opening degree data of a specific electronic expansion valve and the temperature of a winding in the refrigerating system, and meanwhile, pre-storing a relation table of air exhausting temperature and winding temperature in the refrigerating system; 2, picking an opening degree of the special electronic expansion valve, and determining whether the air exhausting temperature is within the preset range, and entering step 3 if the air exhausting temperature is within the preset range; and 3, determining whether the motor winding temperature is within the preset range; if so, determining that refrigerants meet the system requirement; and if not so, determining that the refrigerants are insufficient, and prompting that the refrigerants are insufficient by the system. The invention also discloses a device for determining the refrigerant quantity of the refrigerating system. With the adoption of the method and the device, the fault determining is replaced by the refrigerating system refrigerant quantity determining; and the method and the device are of practical significance on repair and the system reliability improvement.

The invention discloses a method and a device for testing the characteristics of a thin film transistor on an array substrate, and relates to the field of liquid crystal displays. The method and the device aim to improve the accuracy of test results. The method for testing the characteristics of the thin film transistor on the array substrate comprises the following steps of: determining the period of a gate test voltage signal and a drain-source test voltage signal which correspond to the characteristic to be tested of the thin film transistor and signal amplitude in each period, wherein both the gate test voltage signal and the drain-source test voltage signal are alternating current voltage signals; applying the gate test voltage signal to the gate of the thin film transistor, and applying the drain-source test voltage signal between the source and drain of the thin film transistor; and acquiring an output signal, which corresponds to the characteristic to be tested, of the thin film transistor. The method and the device can be used for the design verification and quality verification processes of a thin film transistor liquid crystal display.

The invention relates to a test apparatus and test method of the stiffness of a glass fiber mat and cloth. The test apparatus comprises a pedestal, a support, an up-and-down movement platform, a sample stage and a slide rail. The test method comprises the following steps: 1, cutting the glass fiber mat and cloth to be tested according to a prescribed dimension to form a sample to be tested, and carrying out standardized pretreatment on the sample to be tested; 2, tiling the pretreated sample to be tested on the sample stage, pushing the sample to be tested to forward move for a certain distance, and upward moving the up-and-down movement platform to make the upper surface of a horizontal scale just touch the falling edge of the sample to be tested; and 3, measuring the horizontal distance of the sample to be tested through the horizontal scale, measuring the falling distance of the sample to be tested through a height scale, and calculating the stiffness coefficient of the glass fiber mat and cloth sample to be tested, which is a ratio of the horizontal distance of the sample to be tested to the falling distance of the sample to be tested. The test method has the advantages of simple and effective process, scientific test principle and high test precision, and the test apparatus has the advantages of simplicity, durability, accurate test effect, convenience, and high practicality.

The invention relates to an arc light protection unit on-line test method, (1) installs the arc light sensor in the switch cabinet, and around the arc sensor fixed the simulation light source of which light intensity is adjustable; (2) under the electric system normal operation condition, through the change-over switch temporarily relieves the arc light protection unit and the electric system electrical connection, and connect with the test unit; (3) the test unit contrl the simulation fault current and simulation light intensity which brought to arc protection unit, the movement performance of test arc protection unit under the certain intensity light and current effect; (4) the test unit automatic logging the arc protection unit test result under the certain intensity light and current effect, judge the arc protection unit operating whether or not normal. The invention can on-line test and log the precise movement parameter of the arc protection unit under the different current and light intensity effect, and supplies a precise test means for guaranting the arc protection unit unitreliable movement.

The present invention relates to the electronic industry technology field, and discloses a fingerprint identification device test system. The fingerprint identification device test system is configured to test a fingerprint identification device, and comprises a mechanical arm, a plurality of simulation fingers, a simulation finger placement station and a test station. The fingerprint identification device is arranged in the test position, and the simulation finger is arranged in the simulation finger placement station. The mechanical arm is configured to pick up simulation fingers in the simulation finger placement station to move the simulation finger to the upper portion of the test station and control the simulation finger to perform test of the portion to be tested of the finger identification device. The finger identification device test system has high efficiency and accurate in test result, and can perform quantity production.

The invention relates to a grid access simulation test technology for an inverter, and discloses a grid access simulation test system for an inverter. The grid access simulation test system for an inverter comprises a host computer simulation subsystem, a digital simulation subsystem, a physical simulation subsystem, an inverter and an interface subsystem, wherein the host computer simulation subsystem is connected with the digital simulation subsystem; the digital simulation subsystem is connected with the inverter through the interface subsystem; the inverter is also connected with the physical simulation subsystem; the host computer simulation subsystem is used for monitoring an on-line monitoring simulation test process; the digital simulation subsystem is used for performing digital real time simulation of a power grid according to a power grid model; the physical simulation subsystem is used for performing physical simulation of power generation equipment according to a model for the power generation equipment; and the interface subsystem is used for performing power conversion of interactive signals between the digital simulation subsystem and the inverter. Therefore, the inverter can be tested more comprehensively, and at the same time the test environment gets closer to the actual environment and the test result is more accurate.

The invention discloses a test bench of a full automatic valve electric device, the output end of the valve electric device is connected with a gear transmission case, the test bench of the electric device is provided with an industrial computer, and the industrial computer is an information processing unit and is respectively connected with the valve electric device and a motor through signal circuits. In addition, the invention further discloses a test method of the test bench. The adoption of the technical scheme can use the computer to realize the comprehensive testing of various mechanical and electrical parameters of the valve electric device, reflect the real-time dynamic data, automatically test a variety of items, such as the torque data of the valve electric device under full stroke and various states, obtain accurate test results, realize the regulation and the control of the testing process, simulate the various actual states of the operation of a valve, further obtain the efficiency of the motor, the transmission total efficiency of an electric fitting and other data, and provide an important basis for design, manufacture and operation of the valve.

The invention discloses a shale gas content measurement device and a shale gas content measurement method. The measurement device comprises a fixed base, a driving mechanism, a sealed sample crushing cylinder, a crushing combined tool and a seal cover, wherein the driving mechanism is connected to the fixed base; a cylinder body of the seal sample crushing cylinder is connected with the fixed base and is internally provided with a stirring shaft connected with the driving mechanism; the stirring shaft rotates under the driving of the driving mechanism; the crushing combined tool is connected to the stirring shaft of the sealed sample crushing cylinder and is matched for sample rough crushing and fine crushing; the seal cover is arranged at the opening of the seal sample crushing cylinder above the crushing combined tool and is connected with the sealed sample crushing cylinder in a sealed mode. The testing device cam seal, crush and degas the whole rock core or rock sample in an exploration field or a laboratory, so that the sample gas content can be obtained rapidly and accurately.

The invention belongs to the technical field of medical instruments, and relates to a disposable soft connecting band collection container and an anti-freezing vacuum blood taking needle of a bleeding opening. The disposable soft connecting band collection container is formed in the following mode that: a biological product anticoagulant coating layer is arranged on an inner cavity wall of a circular connector; one end of the connector is provided with a blood taking plastic duct; a vacuum valve is placed on the plastic duct; the other end of the plastic duct is provided with the circular connector; the inner cavity wall of the circular connector is provided with the biological product anticoagulant coating layer; one end of the connector is provided with a venous blood taking needle, while the other end is provided with a blood collection sample bottle needle; the blood collection sample bottle needle is connected with a blood collection sample bottle cap; the blood collection sample bottle cap is connected with a rubber plug; the rubber plug is connected with a blood collection sample bottle; and one side on the blood collection sample bottle close to the blood collection sample bottle cap is provided with a secondary bleeding opening. The disposable soft connecting band collection container and the anti-freezing vacuum blood taking needle of the bleeding opening can ensure that a blood sample generates no cruor and hemolysis so as to ensure the accuracy of the test result. The blood dosage during the test can be controlled flexibly so as to ensure repeated tests at any time or the addition of new testing items.

The invention discloses a method and device for testing the load of a linear telescoping mechanism, including a method and a device which are used for testing the pull / push force load capacity of a tested product (2). A connecting rod (3), of which the two ends can be connected with the tested product (2), is arranged on the device, a pull force load test can be carried out when the tested product (2) is connected with one end of the connecting rod (3), and a push force load test can be carried out when the tested product (2) is connected with the other end of the connecting rod (3). According to the method and the device, a force which is inconveniently applied is subjected to direction change by using a pulley, a two-way-movement slide frame assembly which is supported by linear bearings is adopted, and the stress situation of the tested product is determined through the relative displacement between the slide frame assembly and supporting seats fixed on a test platform, so that the push / pull force test can be achieved by only simply changing a mounting position of the tested product, the test results are accurate, and the test process is convenient and fast.

The invention relates to an oil level monitoring and warning device for an oil conservator special for a transformer. The oil level monitoring and warning device is mainly characterized by comprising a light source emitter, a light source receiver, a photovoltaic conversion unit and a warning unit, wherein the light source emitter and the light source receiver are arranged in the oil conservator special for the transformer, the photovoltaic conversion unit is connected with the light source receiver, and the warning unit is connected with the photovoltaic conversion unit; the light source emitter is installed on the inner wall of the oil conservator and located above the oil level in the oil conservator; the light source receiver is installed on the inner wall, opposite to the light source emitter, of the oil conservator and located below the oil level in the oil conservator; the light source emitter irradiates a light beam of an emitting point to the light source receiver on the other side of the oil conservator at a certain angle. The oil level monitoring and warning device is reasonable in design; according to the refraction principle of light on an interface between gas and oil in the transformer, the oil level of the oil conservator in the transformer is reflected; meanwhile, according to the photovoltaic conversion principle, optical signals are converted into electric signals, and then the electric signals are output, so that the warning function is achieved; the oil level monitoring and warning device has the advantages of being safe and reliable in detection, accurate in testing result, easy and convenient to operate, high in anti-interference capacity and the like.

The invention discloses a vibration-control testing system of an unsaturated soil column. The vibration-control testing system comprises a seepage-flow and pollutant injection mechanism, an unsaturated soil column mechanism, a vibrating mechanism, a liquid discharging pipe, a confining-pressure applying and measuring device, a data acquisition system, an acceleration and excitation generating and recording device, a pressure chamber mechanism and a computer and the like. The vibration-control testing system disclosed by the invention has the advantages that a fixed-free type system is used for applying axial excitation and torsional excitation on the soil column, so that the defect that the existing conventional seepage-flow testing equipment can not consider the vibrational excitation and the saturability is overcome, the test for the transfer characteristic of seepage flow and pollutants under different vibrational excitation and soil-column saturability can be carried out, the confining pressure can be adjusted, and the vibration attenuating frequency and the soil-column deformation and the like can be accurately controlled and measured.

The invention discloses a system and a method for automatically and quantitatively analyzing a coal rock ray plate fracture, relates to the technical field of development of coal energy sources and aims at providing a system and a method for automatically and quantitatively analyzing the coal rock ray plate fracture which is simple to operate, quick in analysis and accurate in test result. The system comprises a microscope automatic platform control system and a microscopic image analyzing system. The method comprises the steps of connecting the microscope automatic platform control system and the microscopic image analyzing system to a fluorescence microscope; adjusting the fluorescence microscope; setting calibration; panoramically scanning and collecting images; setting image parameters and performing statistical processing and analysis on the coal rock ray plate fracture. According to the system and the method for automatically and quantitatively analyzing the coal rock ray plate fracture, the microscope automatic platform control system and the microscopic image analyzing system are connected to the fluorescence microscope, so that the testing results are more accurate; the situation of recounting the fracture is avoided. The method is simple to operate and quick in analysis, manual time consumption is reduced, analysis projects are increased, personal errors are eliminated and the test results are abundant and accurate.

The invention discloses a testing method of a plugging rate of a repeated fracturing plugging agent. The testing method comprises the following steps: (a) preparing the repeated fracturing plugging agent for future use; (b) cutting a selected rock core and making an artificial crack; (c) paving one layer of particle substances on a crack surface and simulating a fracturing crack; (d) injecting the repeated fracturing plugging agent into the simulated fracturing crack and standing for a period of time; and (e) injecting liquid, determining the permeation rate and calculating the plugging rate. According to the testing method disclosed by the invention, the plugging rate of the repeated fracturing plugging agent can be rapidly detected; and the testing process is simple, the tested result is accurate, and the testing method provides data support to the utilization of the repeated fracturing plugging agent.

The invention discloses a method and a device for precisely measuring volume of a volume metering pipe. A step motor of the device is in rigid connection with a piston of an injector through a lead screw, the injector is provided with a motor initial-position optocoupler, and an outlet of the injector is connected with a second electromagnetic valve. The second electromagnetic valve is connected with a reagent barrel and one end of a first T-shaped joint, the other end of the first T-shaped joint is connected with the volume metering pipe, a straight-angle end of the first T-shaped joint is connected with an inlet end of a first electromagnetic valve, and an outlet end of the first electromagnetic valve is connected with an air filter; a first liquid-level detection optocoupler and a second liquid-level detection optocoupler are arranged at the top end and the bottom end of the volume metering pipe respectively, the bottom end of the volume metering pipe is connected with a public end of a third electromagnetic valve, the third electromagnetic valve is connected with a second T-shaped joint and connected with a high-level end of a negative-pressure chamber, a low-level end of the negative-pressure chamber is connected with a liquid pump, the liquid pump is connected with the second T-shaped joint, and the second T-shaped joint is connected with a waste liquid barrel. By the method and the device for precisely measuring volume, precise and reliable measurement can be realized.

The invention discloses a fuel battery pack with a testing function. The fuel battery pack comprises an anode end plate, a cathode end plate and at least two fuel batteries which are independent from each other, wherein anode insulating plate is laid on the inner side wall of the anode end plate; a cathode insulating plate is laid on the inner side wall of the cathode end plate; each fuel battery is arranged between the anode insulating plate and the cathode insulating plate in a clamped manner. By adopting the fuel battery pack of a combined structure, a plurality of fuel batteries to be tested can share the anode end plate and the cathode end plate, when key materials of the fuel batteries are tested and studied, key materials such as a plurality of different membrane electrodes or conduction electrode plates can be respectively assembled into different independent fuel batteries, different tested materials can be tested in one same temperature environment, and the fuel battery pack has the advantages of precise testing result, high testing material utilization rate, and the like.

The invention relates to a thermally-stimulated current tester, which comprises a vacuum chamber, a micro galvanometer and a temperature control device, wherein the vacuum chamber comprises an upper electrode capable of being adjusted up and down, a lower electrode with a sample reservoir, a liquid nitrogen container and a heater; the sample reservoir is arranged above the lower electrode; the liquid nitrogen container is arranged at the periphery of the lower electrode; the heater is arranged in the center inside the lower electrode; the lower electrode is arranged on an insulated seat; the upper electrode and the lower electrode are connected to the micro galvanometer; a temperature sensor is arranged at the sample reservoir; and the heater and the temperature sensor are respectively connected to the temperature control device. The thermally-stimulated current tester is high in sensitivity and accurate in test result, effectively solves the problem that a self-assembled device cannot meet search and test requirements and the like of new materials, perfects experimental methods and measures of a thermally-stimulated current technology and has wide application prospects in the fields of researches on dielectric materials, insulation materials, semiconductor photoelectric materials and electret materials and measurement of micro-current.

The invention discloses a test method for the comprehensive transmission efficiency of an automotive automatic transmission. The test method includes the following steps that (1) the automatic transmission is installed on an experiment platform, a power output device, a first torque and rotation speed sensor, the automatic transmission, a second torque and rotation speed sensor and a load are sequentially connected, and the automatic transmission is engaged at an advancing gear; (2) a data collecting and control system controls the power output device to operate and output the torque, and collects the rotation speed and torque data; (3) the common driving conditions of an automobile are simulated, and the data of the first rotation speed, the first torque, the second rotation speed and the second torque are obtained through measurement; (4) the comprehensive transmission efficiency of the automotive automatic transmission is worked out according to a formula. By means of the test method, the more actual and accurate transmission efficiency of the automotive automatic transmission is obtained, and a basis is provided for evaluation of the performance of the automatic transmission.

The invention discloses a network traffic simulation method, device and equipment and a network equipment test system, and the method comprises the steps: receiving a scene simulation requirement, thescene simulation requirement carrying a scene identifier and a target value of each simulation parameter; acquiring a scene association rule which has a corresponding relationship with the scene identifier and can meet the target value of each simulation parameter; wherein the scene association rule comprises an application layer protocol with a preset sequence relation; simulating each application layer protocol in the scene association rule according to the preset sequence relationship to obtain a network data packet; and sending the network data packet through a first network card. According to the method, the real traffic scene is defined by utilizing the scene association rule, and the real traffic scene can be restored by simulating the scene association rule.

The invention relates to the technical field of road engineering quality detection, in particular to a tunnel lining non-destructive testing method based on audio frequency analysis, which aims to provide an efficient and accurate non-destructive testing method for tunnel linings. The technical solution adopted is as follows: the following steps are included: acquiring a tunnel lining tapping audio signal at a given sampling frequency by using a mobile terminal with a recording function; trimming the tapping audio signal to retain an effective signal; calculating a calibration threshold according to the effective signal parameters; calculating a test point void index according to the effective signal parameters; comparing the void index with the calibration threshold; and determining the tunnel lining quality according to the comparison result. The invention can carry out non-destructive testing on the surface defects of the lining, and has the characteristics of convenience, high efficiency and accuracy.

The invention discloses a testing method for lip synchronization, which relates to the testing technology of lip synchronization, and is proposed to solve the inaccurate testing results of the current lip synchronization. clock, the method comprises the following steps: A. start the capture command when receiving the sound test end prompt, and capture the current test image; B. determine the transmission delay between the image and the sound according to the clock information in the captured image quantity. The present invention also discloses a device for realizing the above method at the same time. The test result is quite accurate by using the method and the device of the present invention, which is very beneficial to the synchronous debugging of the system for labial sounds.

The invention discloses an auxiliary device and a method of fragile material tension and torsion test. The auxiliary device comprises a clamping protective sleeve and a protective sleeve centering device. The clamping protective sleeve is a cylindrical sleeve. the protective sleeve centering device comprises a support frame, an upper centering block, a threaded rod and a handle. The support frame comprises a pedestal and a column erected on the pedestal. A threaded hole penetrating the upper centering block is disposed on the upper centering block; the threaded rod passes through the threaded hole on the upper centering block, and also passes through a threaded hole on the column of the support frame. The handle is mounted at the upper end part of the threaded rod. A V-shaped long groove is disposed on the upper surface of the pedestal of the support frame and extends across the upper surface of the pedestal, and a V-shaped long groove is disposed at a corresponding position on the lower surface of the upper centering block. The auxiliary device and the test method effectively prevent a tension and torsion sample made of a fragile material from directly contacting antiskid teeth of a chuck of a testing machine, and thus prevent the sample from being crushed by the antiskid teeth. The device is simple in structure; the test method is easy to perform; no additional reconstruction of the testing machine is needed; and the cost is low.