24 results about "Comparative test" patented technology

The invention relates to a reference block group for ultrasonic detection of a brazing type copper-aluminum transition equipment wire clamp and a calibration method of the reference block group, and belongs to the technical field of nondestructive detection. The test block group comprises three independent test blocks, each test block is formed by connecting an aluminum plate layer and a copper plate layer through a brazing process, the area of the copper plate layer is smaller than that of the aluminum plate layer, one test block is provided with four through holes with different diameters on the aluminum plate layer, and the other test block is provided with corresponding through holes on the copper plate layer. The third test block is pre-embedded with an air domain at the copper-aluminum bonding surface to simulate an incomplete fusion defect, and a standard reflection signal database is established by accurately controlling the size of the test block and the position and form of the defect and combining ultrasonic detection, so that the accuracy, the reliability and the repeatability of ultrasonic detection can be effectively improved, and the test efficiency is improved. And a technical support is provided for quality control and safety evaluation of the brazing type copper-aluminum transition equipment wire clamp.

This disclosure provides a method, apparatus, device, and storage medium for A / B testing, relating to the field of computer technology, and particularly to the field of computer testing technology. The specific implementation scheme is as follows: Traffic is randomly divided into group A and group B, with group A and group B having equal amounts of traffic; group A is randomly and equally divided into at least two subgroups of traffic; group B is also randomly and equally divided into at least two subgroups of traffic, with each subgroup of group B having equal amounts of traffic to each subgroup of group A; the subgroups of traffic are then permuted and combined to obtain at least four pairs of subgroups; multiple comparative tests are performed using at least four pairs of subgroups of traffic to obtain the A / B test results. The A / B test results obtained using the above method are more stable and reliable compared to the test results obtained using only one pair of traffic groups.

The invention relates to the technical field of stress simulation, and discloses a movable fire resistance test furnace with a stress simulation device, which comprises a test furnace, a first test tank and a second test tank, a tension test rod and a torsion test rod are symmetrically arranged in each of the first test groove and the second test groove, a driving assembly and a clamping assembly are arranged in the test furnace, and the driving assembly comprises eight positioning blocks; through the design of the double independent test grooves, different temperatures or the same tensile force can be synchronously applied, a contrast test can be carried out on two samples, and contrast data of fire resistance and stress performance can be rapidly obtained. Self-adaptive adjustment is achieved through cooperation of the helical tooth transmission rod and the arc-shaped helical rack set, even if one side of the special-shaped sample is clamped firstly, the clamping plate on the other side can still be driven to continuously move till the special-shaped sample is stably fixed, the clamping universality and stability are greatly improved, and it is guaranteed that the special-shaped sample is stressed in a balanced mode in the testing process.

The present invention relates to the field of underground engineering technology, and discloses a method, device, equipment and storage medium for advanced prediction of rock mass quality. The method comprises: conducting a geophysical detection comparative test on a known target body to determine the noise critical value and optimize the inversion algorithm; obtaining multi-point geophysical detection results on the tunnel face facing the intended excavation direction, performing three-dimensional modeling and slicing processing on the multi-point geophysical detection results, and generating a two-dimensional map of the geophysical detection results; obtaining engineering geological survey parameters of multiple field survey points in the two-dimensional map of the geophysical detection results, and calculating the rock mass quality pre-evaluation value of each field survey point; obtaining the geophysical detection value of each field survey point, establishing a large model for advanced prediction of rock mass quality, drawing a rock mass quality fitting curve, and determining the advanced prediction value of the rock mass quality of the point to be predicted based on the geophysical detection results of the point to be predicted. The present application realizes the advanced quantitative evaluation of the rock mass quality in the area where the shaft and tunnel are to be excavated, effectively ensuring the safety of shaft and tunnel engineering construction in advance, and improving construction efficiency.

The invention discloses an experimental method and system for verifying multi-scene validity of a large power language model. The method comprises the following steps: constructing a layered experiment model for simulating a full-link business process according to a power business scene requirement; performing a contrast test on the experimental group and at least one control group, collecting data, calculating experimental data to obtain multiple indexes, calculating subjective and objective weights based on expert experience and data volatility, and fusing the subjective and objective weights based on an AHP-entropy weight method to obtain a plurality of indexes; therefore, a dynamic evaluation mechanism adaptive to different power scene priority changes is realized. And iterating the model through a dynamic evaluation result so as to carry out term recognition error analysis and knowledge graph incremental training, thereby realizing data-model closed-loop optimization. According to the method, verification scientificity and conclusion credibility are remarkably improved, subjective experience of experts and objective volatility of data are effectively fused, the stiffness defect of traditional static indexes is overcome, and direct driving of evaluation results on model iteration is achieved.

The invention discloses an advanced reinforcement method for arranging a double-layer large pipe shed behind a shield in TBM construction. The method comprises the following steps that (1) discrete element numerical simulation software is selected; 2) performing equal-proportion modeling according to the field size of the tunnel engineering; (3) the non-pipe-shed supporting scheme serves as a contrast test, a servo mechanism in simulation software is used for monitoring TBM shield pressure-surrounding rock pressure, and the TBM shield pressure-surrounding rock pressure serves as a parameter index; 4) monitoring a TBM shield-surrounding rock pressure value change rule by using a servo mechanism in simulation software in two stages of drilling and supporting of the double-layer large pipe shed; and 5) comparing and analyzing the results of the two schemes, and evaluating the stability effect of the double-layer large pipe shed supporting scheme on the surrounding rock according to the TBM shield-surrounding rock pressure value change rule. The method has the advantages that the supporting effect of the double-layer large pipe shed is compared and analyzed through discrete element numerical simulation, surrounding rock deformation is effectively controlled and an annular supporting structure is formed by combining drilling and grouting two-stage pressure monitoring, the TBM blocking risk is reduced, and the construction safety is improved.

This invention discloses a method for fabricating a rivet ultrasonic testing comparison block, belonging to the technical field of aviation testing specimens. The method pre-embeds a simulated defect at the connection between the pier head and the polished rod. The comparison block produced by the invention features stable simulated defect dimensions, free from factors affecting the stability of the simulated defect during the fabrication process. The invention also cleverly displays the internal structural state of the rivet, skin, and structural component after riveting, assisting later technicians in waveform assessment research and improving the accuracy of rivet testing.

The present application relates to the technical field of ultrasonic testing of austenitic stainless steel T type welded joints, and provides a method for manufacturing a comparison test block of an austenitic stainless steel T type welded joint, comprising the following steps: analyzing and recording size and structure information of an austenitic stainless steel T type welded joint to be detected, and manufacturing a comparison test block blank according to the size and structure information of the austenitic stainless steel T type welded joint to be detected; determining a real reflection body position on the comparison test block blank according to the size and structure information of the austenitic stainless steel T type welded joint to be detected; setting an artificial reflection body at the real reflection body position to obtain a comparison test block of the austenitic stainless steel T type welded joint to be detected. The comparison test block of the austenitic stainless steel T type welded joint to be detected manufactured by the present application can meet the requirement of sensitivity curve manufacturing, and thus can effectively perform ultrasonic testing.

Aspects of the disclosure provide methods, apparatuses, and storage media for processing of media presentation ratings. In some examples, processing circuitry receives a score by a subject rating a media presentation. The subject's score includes a plurality of self-comparison scores rated to a self-comparison test in the media presentation. The processing circuitry applies a first rule and a second rule to the plurality of self-comparison scores. The first rule requires a first subset of the plurality of self-comparison scores to be within a first range. The second rule requires a second subset of the plurality of self-comparison scores to be within a second range to limit at least one outlier to the first rule according to the second range. In response to the first rule and the second rule being satisfied, the processing circuitry determines that the subject's score is eligible for a subjective assessment.

This invention discloses a refined model test method, system, and equipment for the soil displacement effect of open-pit pipe piles, relating to the field of open-pit pipe pile driving technology. The method includes: establishing multi-physical quantity similarity criteria and determining similarity constants; based on the similarity constants, preparing grouting mixture and constructing a micro-reinforcing cage; using the micro-reinforcing cage and grouting mixture to construct an open-pit pipe pile model; establishing a model box, preparing soil samples with target density and homogeneity using a layered filling method within the box, and setting up a pile driving test platform; constructing a comparative test scheme, and simultaneously monitoring and recording pile driving data using the pile driving test platform; processing and comparing the pile driving data to obtain data criteria, providing a basis for optimizing open-pit pipe pile driving parameters and construction control. This invention solves the problems of incomplete model similarity relationships, single test monitoring dimensions, difficulty in quantifying and comparing results, and the inability to provide an operational basis for optimizing engineering construction parameters.

The invention relates to the field of finance and the technical field of computers, and discloses a data quality evaluation method and device, a medium and equipment, and the method comprises the steps: determining a basic quality score of target business data based on each quality evaluation index of the to-be-evaluated target business data; based on the target business data and a target model corresponding to the target business data, determining a training value score when the target model is trained by the target business data; performing an online comparison test based on the target business data to obtain an actual contribution score of the target business data; and based on the basic quality score, the training value score and the actual contribution score, determining a target score of the target business data to obtain a data quality evaluation result. According to the invention, multi-dimensional evaluation of the data value is realized, and the accuracy of a quality evaluation result is improved.

The application provides a high-efficiency rock thermal conductivity test device and test method for simulating a natural confining pressure environment. The test device comprises an upper computer, a confining pressure loading system and a test measurement system, and the confining pressure loading system and the test measurement system are arranged above and below and controlled by the upper computer. The application can provide a high-efficiency and accurate test method for simulating the change rule of the thermal conductivity of rocks under a natural stress environment. The confining pressure loading system is adopted in the design, and true triaxial confining pressure can be applied to the sample to simulate the stress environment of the natural rock mass. The confining pressure loading system contains four confining pressure loading bins, and four samples can be measured at the same time to improve the test efficiency and form a comparative test. The optical scanning technology based on the mobile point heat source principle is adopted to test the thermal conductivity of the sample, and the test speed is fast and the precision is high. The sample size is small, the cubic sample is small, the test surface height difference is small, and the size is greater than the scanning channel, which can meet the test needs.

This invention discloses a signal analysis method for nondestructive testing of creep in metallic materials. The creep testing process includes: preparation of the test object and acquisition of nondestructive testing signals; projection of basis functions and calculation of parameters on the acquired test signals; comparison of the obtained parameter values ​​with a creep evaluation curve of the same material to assess the degree of creep. The basis functions and creep evaluation curve used in this process should be obtained under specified testing conditions, and the test signals of the tested object should also be obtained under these conditions. This invention patent prepares dedicated comparative test blocks for specific materials, including high-temperature aging test blocks and creep test blocks. It uses a certain amount of test data to extract test parameters and form a set of basis functions, ensuring the specificity of the test parameters to the material and creep structure, improving test sensitivity, reducing the dispersion of test results, and ensuring the repeatability of test results.

The invention discloses a method for correcting and verifying a longitudinal dynamic simulation model of a heavy-load train. The method comprises the following steps: constructing a longitudinal dynamic simulation model of a long and large heavy-load train; based on previous test data, test evaluation data and tracking monitoring data, performing model correction from three aspects of parameter optimization, mechanical property adjustment and dynamic response calibration; setting a model verification working condition, and selecting three typical operation working conditions for a contrast test; judging whether the calculation result of the model accords with the operation result of the heavy-load train under the actual working condition or not according to the heavy-load train longitudinal dynamics assessment index; if not, the model is corrected again, so that the model calculation result is close to the actual working condition; according to the method disclosed by the invention, the previous test, evaluation and monitoring data are combined, iterative correction is carried out from three dimensions of parameter optimization, mechanical properties and dynamic response, and the adaptability of the model to complex working conditions is remarkably improved.

This utility model belongs to the technical field of comparative test blocks and discloses a comparative test block for digital radiography (DR) pipe thickness measurement. It includes a magnetic block with a straight rod connected to its center. A stepped test block is installed in the middle of the straight rod, and a round bar is fixedly installed at the end of the straight rod. Based on the current availability of only one set of data to ensure the authority of the final data used, this method allows for the simultaneous acquisition of data from both the direct measurement method using a round bar and the experimental comparison method using a stepped test block in a single installation. The two sets of data are compared and verified, making the data more authoritative.

The invention relates to the technical field of nondestructive testing, and particularly discloses a reference block for metal glue joint outlet guide vane penetration method ultrasonic testing and a testing method. A vertical rib bonding area, a cavity area and an annular bonding area are arranged on the inner side of the guide vane body, a cover plate is arranged in the guide vane body, an adhesive film is arranged on one side of the cover plate, a polytetrafluoroethylene film is arranged on one side of the cover plate, and a clamping area is arranged on the top of the guide vane body. A blade crown is arranged at the bottom of the guide blade body, and a blade back area is arranged on one side of the guide blade body. The reference block and the detection method at least have the following beneficial effects that the reference block and a part are consistent in structure, so that the detection result of the reference block is representative; and the structure matching performance can be enhanced.

The application discloses a kind of in-service gas tree valve stem defect detection method and system, it is related to ultrasonic testing technical field, comprising the following steps: making valve stem simulation test piece with defect characteristics and comparative test piece without defect characteristics;In the comparative test piece is scanned by ultrasonic phased array, and the standard echo parameter contrast table of comparative test piece disassembly state is obtained;The comparative test piece is installed in the inside of gas tree wellhead valve, and is scanned again by ultrasonic phased array, and the standard echo parameter contrast table of comparative test piece is obtained under the condition of not disassembly;Make echo feature contrast chart;The valve stem simulation test piece is installed in the inside of gas tree wellhead valve, and is scanned by ultrasonic phased array, and the structure characteristic waveform chart of valve stem simulation test piece is obtained, and the structure characteristic waveform chart and the echo feature contrast chart are compared and analyzed.The application can realize that, without disassembly valve, corrosion defect on the surface of valve stem in the inside of valve is realized online detection.

The invention relates to a method for analyzing target software (102, 200), in particular operating software for a technical system, e.g., a control unit (104), with regard to potentially harmful behavior, comprising: providing (216) target software data (212) comprising a decomposition, wherein the decomposition comprises functional blocks obtained or obtained by disassembling the target software (200); providing (224) malware data (220) comprising a plurality of decompositions, wherein the decompositions each comprise one or more of the functional blocks obtained or obtained by disassembling an attack vector; providing (240) a test set (234) of comparison tests (228, 230, 232), wherein the comparison tests each comprise a comparison instruction that specifies how the target software data is to be compared with a respective decomposition of the malware data;Analyzing (242) the target software data (212), based on the malware data (220) and the test set (234) of comparison tests, to obtain analysis result data (282); and providing the analysis result data;

A method further includes performing the following phases for at least two iterations. In a first phase, the method includes, iteratively, applying an evolutionary algorithm to a current instruction to generate a revised instruction, testing, by applying a large language model (LLM), prompts including the current instruction and the revised instruction, respectively, training examples selected by the example selector to obtain test results, comparing the test results to obtain a comparison result, setting the revised instruction as the current instruction, and exiting the first phase when the comparison result satisfies a first phase stop condition. In a second phase, the method further includes selecting, by the example selector, training examples, testing, using the current instruction, the training examples to obtain a test result, and modifying, after executing the first phase, the example selector based on the test result.

The invention belongs to the field of comprehensive strength design, and relates to a method for determining the proportion of friction force of a rivet connection structure. The method comprises the following steps: determining a rivet connection mode and number; designing two groups of comparison test pieces; wherein the first group of test pieces are test pieces with friction force, and the second group of test pieces are test pieces without friction force; the second plate in the first group of test pieces with friction force is a flat plate, and the rivet connection area of the second plate adopts flat plate surface contact; carrying out a fatigue performance test, namely obtaining the fatigue limit of each test piece through the test; and according to the fatigue limit of the first group of test pieces and the fatigue limit of the second group of test pieces, the proportion of the friction force relative to the external load is analyzed, so that the shear load before rivet correction is obtained.

The invention provides a combined cycle unit comparison performance test uncertainty control method. The method comprises the following steps: establishing a mathematical model between a comparison performance test index and an input quantity of a combined cycle unit; giving a target evaluation value and an uncertainty limit of a comparison performance test; according to the mathematical model, solving sensitivity coefficients of comparison performance test indexes to each input quantity; judging whether the system uncertainty has correlation or not; calculating the uncertainty of a standard system according to the system component of the input quantity, the sensitivity coefficient and the correlation coefficient of the uncertainty of the system; calculating a standard random uncertainty according to the random component of the input quantity and the correlation coefficient of the random uncertainty between different input quantities; and calculating the comparative performance test uncertainty under the current test duration according to the standard system uncertainty and the standard random uncertainty. The method has the technical effect that the test uncertainty is calculated and compared in real time, so that the uncertainty is accurately controlled to meet engineering application requirements.

This invention belongs to the field of aircraft manufacturing technology and discloses a non-destructive metrology method for detecting defects in comparative samples and the inner walls of holes. The sample includes a comparative test block with eddy current holes. The eddy current holes have notches, which include a first part and a second part. The first part has a triangular cross-section, and the second part has a rectangular cross-section. Only one of the first and second parts is present on the comparative test block. When the first part is present, it is located at the corner of the eddy current hole; when the second part is present, it is located on the inner wall of the eddy current hole. This configuration allows the comparative test sample to accurately reproduce defects in the inspected workpiece, meeting the verification requirements of eddy current testing technology for measuring the dimensions of hole sidewalls, hole corners, or features such as blind grooves. Furthermore, this non-destructive metrology method can be used to monitor the quality of defects in the inner walls of aerospace metal holes, thereby contributing to the improvement of quality and safety in aircraft manufacturing technology.

The embodiment of the invention provides a spacecraft material exposure test device and method. The device comprises a first bearing plate, a second bearing plate and a third bearing plate which are sequentially stacked, a first through hole is formed in the middle of the first bearing plate, a first accommodating part for accommodating an exposure test sample is formed between the first bearing plate and the second bearing plate, and the exposure test sample can be exposed to a space environment through the first through hole; a completely-shielded second accommodating part is formed between the second bearing plate and the third bearing plate and is used for accommodating a contrast test sample, so that the contrast test sample is not exposed to the space environment. According to the scheme provided by the invention, more accurate space environment effect degradation data of the material can be obtained.

The invention discloses a composite material layering reference block and a manufacturing method thereof, and relates to the technical field of nondestructive testing of composite materials. The manufacturing method of the composite layered reference test block comprises the following steps: S1, laminating prepregs, and implanting artificial defect units between prepreg layers to prepare a reference test block preform; wherein the artificial defect unit comprises a plurality of artificial defects, each artificial defect comprises two surface layers, the edges of the two surface layers are bonded, and a separation cavity is formed between the two surface layers; s2, performing curing treatment on the reference block preform; s3, processing the reference block preform according to a set size to obtain a reference block; the reference block prepared by the method can be suitable for penetrability detection.