585results about How to "Meet performance requirements" patented technology

The invention relates to the technical field of power grid planning, in particular to a charging pile planning method based on dynamic analysis. The method comprises the following steps: obtaining electric vehicle use data in a target area, and carrying out charging demand prediction analysis according to the electric vehicle use data to obtain a charging demand prediction model; based on the charging demand prediction model, performing multi-scene simulation to obtain charging demand distribution map data, multiple scenes including different traffic flows, different driving modes and different charging demand scenes; obtaining geographic information data of the target area; and constructing a spatial analysis model according to the geographic information data, and evaluating the candidate position of the charging pile according to the charging demand distribution map data, thereby obtaining position suitability score data. According to the method, different scenes are simulated, so that the adaptability and robustness of planning are enhanced.

The invention relates to a production method of a wire rod for an alloy welding wire, and belongs to the technical field of steel manufacturing. Mn, Cr and Ni alloying and V and Ti microalloy strengthening are adopted, and a certain amount of B is added, so that the requirement of a 60-kilogram-level alloy welding wire is met. The process route is designed as follows: molten iron pretreatment, converter smelting, LF furnace external refining, 150mm / 180mm square billet continuous casting, heating furnace heating, rolling, roller way slow cooling and heat preservation vestibule heat preservation. Molten steel with stable components, good castability and gas content meeting the requirement is obtained through the technologies of molten iron pretreatment, converter smelting, LF furnace external refining and the like, after the molten steel is poured into a continuous casting blank, stack cooling or hot delivery and hot charging are conducted for 24 hours, and the technologies of high-temperature rolling, high-temperature spinning, roller way slow cooling and heat preservation vestibule are adopted for high-speed wire rolling. By adopting the process of the scheme, the wire rod can be prevented from generating abnormal structures such as martensite and bainite which influence drawing, and the wire rod for the high-strength alloy welding wire with the specification of phi 5.5 mm, which has stable components and can be drawn into filaments with the specification of phi 1.2 mm without annealing, is obtained.

The invention discloses silver powder and a preparation method and application thereof, and the preparation method of the silver powder comprises the following steps: dispersing a silver source in an alcohol amine compound solution, adding a dispersing agent, and then reacting with a C3-C27 fatty amine solution to prepare the silver powder. The micron silver powder is prepared through the hydrothermal method, the powder can be heated more evenly, the method is simple in process, short in reaction time and high in efficiency, the obtained micron silver powder is good in dispersity, and the tap density of the silver powder can reach about 7 g / cm < 3 >.

The invention discloses a coating assembly suitable for a straight pipe pressure balance type expansion joint, and belongs to the technical field of expansion joints. The coating assemblies comprise the two working corrugated pipe coating assemblies and the balance corrugated pipe coating assembly, the working corrugated pipe coating assemblies are arranged on the outer ring of the first working corrugated pipe and the outer ring of the second working corrugated pipe, and the balance corrugated pipe coating assembly is arranged on the outer ring of the balance corrugated pipe. The coating assembly provided by the invention is composed of a plurality of groups of equally-divided circumferences, each group of equally-divided circumferences can be spliced and fixed to form a circumference shape, the coating assembly can be directly arranged on outer rings of a working corrugated pipe and a balance corrugated pipe in an existing structure, and on-site coating and repairing of the expansion joint are carried out in a mode that equipment is not stopped; economic losses caused by shutdown can be effectively reduced, the small wrapping corrugated pipe and the large wrapping corrugated pipe with the waveform parameters meeting the pressure balance requirement can be selected at the same time, and it is guaranteed that the wrapped expansion joint can meet the original performance requirement.

The invention discloses marine water-resistant flame-retardant white glue which comprises modified VAE emulsion composed of 30-60 parts of VAE emulsion and 10-20 parts of PVA emulsion, 20-30 parts of phosphorus-nitrogen flame retardant, 5-12.5 parts of flame-retardant synergist zinc borate, 1-3 parts of 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 2-16 parts of dispersing agent, 10-15 parts of aluminum hydroxide and 1 part of distilled water, and the aluminum hydroxide is more than 2000 meshes; the invention further discloses a preparation method. According to the water-resistant flame-retardant white glue, the peel strength is not reduced, meanwhile, the water resistance is improved, the density of the adhesive is reduced, the weight of a ship body is reduced, and the requirements for flame retardance and safety performance are met.

The invention provides a one-dimensional pneumatic design method and device for an axial flow compressor, and belongs to the field of axial flow compressor pneumatic design. The method comprises the following steps: taking values of a plurality of design variables as the state of a reinforcement learning agent; the intelligent agent outputs the adjustment amount of the design variable according to the state, and the adjustment amount serves as the action executed by the intelligent agent; applying the action to the value of the current design variable to obtain an updated design variable; utilizing a one-dimensional inverse problem design program to generate a one-dimensional pneumatic design scheme of the gas compressor; utilizing a one-dimensional normal problem analysis program to output performance indexes; constructing a reward function according to the performance indexes; based on feedback provided by the reward function, a depth deterministic strategy gradient algorithm is adopted to train the intelligent agent; and performing one-dimensional pneumatic design of the gas compressor by using the trained intelligent agent. According to the method and device provided by the invention, the problems that the one-dimensional design of the axial flow compressor depends on experience, the efficiency is low, automatic optimization is difficult and the response is slow can be solved.

The invention provides a thermosetting resin composition, a resin adhesive film and application thereof. The thermosetting resin composition comprises the following components in parts by mass: 5-95 parts of benzocyclobutene resin, 5-95 parts of a component containing C = C unsaturated bonds, 5-300 parts of a modified filler and 0.1-10 parts of an initiator, the modified filler is an inorganic filler subjected to surface treatment by a coupling agent containing unsaturated groups, and the unsaturated groups are selected from any one or a combination of at least two of styryl, acryloyloxy, methacryloyloxy and polybutadiene groups. A resin adhesive film prepared from the thermosetting resin composition is excellent in dielectric property, low in dielectric loss tangent Df, good in dielectric stability, small in Df (10GHz) variation amplitude after HAST, high in chemical copper binding force and capable of fully meeting the performance requirement for preparing a high-frequency and high-speed printed circuit board through a semi-addition method or an addition method.

The present application provides a glass fiber surface treatment agent and a preparation method thereof, glass fiber and application. The glass fiber surface treatment agent includes an effective component and water, wherein the effective component accounts for 4.6-10.3% by weight of the glass fiber surface treatment agent; the effective component includes: 6.3-19.6% of silane coupling agent, 1.8-5.9% of surfactant, 3.4-7.8% of lubricant, 60.7-84.8% of film former, and 2.9-6.4% of auxiliary agent according to the weight percentage of the effective component; wherein the film former is an acrylic acid modified polyester resin and / or an organosilicon modified polyester resin. The glass fiber produced by the glass fiber surface treatment agent of the present application has excellent smoothness of use and mechanical properties of glass fiber reinforced plastics, and meets various use requirements of food-grade glass fiber reinforced plastic containers.

The invention discloses a high-strength and high-conductivity copper-nickel-silicon alloy for a lead frame and a preparation method of the high-strength and high-conductivity copper-nickel-silicon alloy. The high-strength and high-conductivity copper-nickel-silicon alloy comprises the following components in percentage by mass: 1.75-1.86 wt% of Ni, 1.02-1.1 wt% of Co, 0.54-0.62 wt% of Si, 0.12-0.13 wt% of Mg, less than or equal to 1.0 wt% of Ag and the balance of Cu. The preparation method comprises the following steps: 1) preparing the raw materials according to the alloy components and the mass percentage content, and carrying out alloy casting by using a vacuum melting furnace; (2) the cast ingot is subjected to solution treatment and then rapidly water-cooled to the room temperature, so that the solid solution state of the alloy is reserved; the method comprises the following steps of (1) carrying out primary cold rolling on a cast ingot, (2) carrying out secondary cold rolling on the cast ingot, (3) carrying out hot rolling on the cast ingot after surface defects of the cast ingot are milled off, (4) carrying out primary cold rolling, annealing for 4 hours at the temperature of 420-440 DEG C, carrying out secondary cold rolling, annealing for 4 hours at the temperature of 310-330 DEG C, carrying out aging treatment until the thickness is 0.2 mm, carrying out tertiary aging treatment at the temperature of 100-400 DEG C for 2-20 hours, and carrying out air cooling to the room temperature. The highest tensile strength of the obtained copper alloy strip is 825 MPa, the highest yield strength is 790 MPa, the highest hardness is 252.9 HV, the highest electric conductivity is 46.17% IACS, and the highest elongation is 3.16%.

The invention discloses a dynamic window-based graph optimization GNSS (Global Navigation Satellite System) and IMU (Inertial Measurement Unit) integrated navigation method, which improves the adaptability, calculation efficiency and positioning accuracy of a system in a dynamic environment by introducing a dynamic window strategy and a key frame mechanism. According to the method, the size of a sliding window is dynamically adjusted according to a real-time motion state, environment change and computing resources: when the environment is complex or high precision is needed, the window is enlarged to contain more historical information; when the environment is stable or computing resources are limited, windows are reduced to improve computing efficiency. Meanwhile, threshold values of position and posture changes are set, and only when the variable quantity of the current state and the latest key frame state exceeds the threshold values, new key frame nodes are added, key motion information is captured, and redundant calculation is avoided; according to the method, the optimal balance between the positioning precision and the calculation efficiency in a complex dynamic environment is realized, the method is suitable for an embedded platform with limited resources, and the requirement of high-precision real-time navigation is met.

The invention relates to the technical field of printed circuit boards, and particularly discloses an ultra-coarsening process of a printed circuit board and an ultra-coarsening liquid medicine. According to the invention, the printed circuit board is subjected to super-roughening treatment twice, acid pickling is carried out between the two times of super-roughening treatment, and tannic acid and chitosan are used as film forming components together during the second time of super-roughening treatment. After the ultra-roughening process is completed, the copper surface binding force of the formed film layer is fully improved, the defects in the related technology are overcome, and the performance requirements of high-end products can be better met.

The present application discloses a method for preparing a carbon material for a battery, comprising: filtering and concentrating papermaking black liquor to obtain liquid lignin; polymerization: adding a cross-linking agent to the liquid lignin for cross-linking and curing reaction to obtain a lignin polymer solid; pre-oxidation: pre-oxidizing the lignin polymer solid to obtain a lignin-based resin; pre-carbonization: pre-carbonizing the lignin-based resin in a non-oxidizing gas atmosphere to obtain a carbon material precursor 1; gas phase deashing: gas phase deashing the carbon material precursor 1 in a non-oxidizing gas atmosphere under the action of a halogen compound and / or a halogen element to obtain a carbon material precursor 2; calcination: crushing the carbon material precursor 2 and calcining it in a protective atmosphere to obtain a carbon material for a battery. The method of the present application effectively improves the expansion and foaming phenomenon during lignin carbonization, and the obtained carbon material has low ash content, controllable specific surface area, and excellent electrochemical performance. A lignin-based resin as mentioned above is also disclosed.

The invention discloses a three-phase LLC resonant converter parameter design method and system based on a time domain model, and belongs to the field of power electronic resonant converter parameter design, and the method comprises the following steps: determining a design demand and working condition distribution; according to the time domain model of the three-phase LLC resonant converter, respectively selecting feasible working modes for different working conditions; according to the selection result of the working modes, the transformation ratio n of the transformer is designed, and the maximum gain Mmax and the minimum gain Mmin are calculated; establishing a relationship between the effective value of the resonance current and the parameters of the resonance converter, and deducing an optimal parameter design constraint condition of the effective value of the resonance current under all working conditions; and solving the parameters of the three-phase LLC resonant converter with the optimal effective value of the resonance current under all working conditions by adopting an optimization method on the premise of meeting all parameter design constraint conditions. The method can optimize the effective value of the full-working-condition resonance current and improve the efficiency of the converter.

The continuous annealing process for the cold-rolled titanium strip coil for deep drawing comprises the following steps that S1, in the preparation stage, the titanium strip coil is subjected to degreasing and cleaning treatment; s2, the continuous annealing furnace is heated to the required temperature, high-purity argon is introduced into the furnace, and the positive pressure in the furnace is kept; s3, the pretreated titanium belt is pulled by a leading belt to enter a continuous annealing furnace and passes through a preheating section, a heating section and a cooling section at a specified speed; according to the continuous annealing method, through continuous annealing, the grain size and the mechanical property of the titanium belt are accurately controlled, and the performance requirement of the titanium belt for stamping machining is met.

The invention relates to the technical field of cement production and manufacturing, aims at solving the problems that an existing grinding system is single in function and cannot have multiple cement grinding processes at the same time, and provides a composite multi-process cement grinding system and process and a cement production method. Wherein the composite multi-process cement grinding system comprises a roller press grinding system and a ball mill grinding system, and the composite multi-process cement grinding process comprises three grinding processes, namely a combined grinding process, a semi-final grinding process and a final grinding process; the cement production method comprises the following steps: separately grinding clinker and a mixed material by using two sets of cement grinding systems, and then mixing by using a mixing system to obtain a finished product. According to the invention, the limitation of a single grinding system is broken through, the operability of the system is improved through an ingenious switching means, and the advantages and functions of production through one system and coexistence of multiple technological processes are realized.

The invention discloses a full-size wind tunnel high-load blade, which relates to the technical field of wind tunnel equipment and comprises a metal blade root, a hollow main beam and a blade body, a main beam connecting section is arranged at one end of the metal blade root, and the side wall of the main beam connecting section is a first conical side wall surface; the large opening end of the first conical side wall face is closer to the end, provided with the main beam connecting section, of the metal blade root than the small opening end of the first conical side wall face. The hollow main beam is formed by wrapping a carbon fiber cloth layer; a blade root connecting section is arranged at one end of the hollow main beam and fixedly arranged on the main beam connecting section in a sleeving mode. The inner side wall of the blade root connecting section is a second conical side wall face, and the second conical side wall face is attached to the first conical side wall face. The blade body is made of a carbon fiber material; and the blade body is fixedly arranged on the hollow main beam. The lightweight design degree of the blade is improved, and the lightweight effect of the blade structure is achieved.

The invention discloses a multispectral remote sensing image panchromatic sharpening method based on a frequency domain decomposition network, the method constructs a frequency domain decomposition and domain generalization network, and the network comprises three core modules: a dynamic convolution low-frequency extraction module, a high-frequency holding module and a spectrum enhancement module; a domain generalization training strategy is provided, a class generative adversarial network structure is adopted, and an adversarial loss function is introduced; and the generator is guided to realize better cross-domain generalization ability under the supervision of the discriminator by intentionally distributing the domain labels by mistake. According to the method, information of different scales is effectively captured, the quality of the fused image is improved, and accurate fusion of invisible satellite data is realized.

The invention relates to the technical field of metal materials, and discloses an Al-Zn heat-treatment-free aluminum alloy and a preparation method and application thereof. The Al-Zn series heat treatment-free aluminum alloy is prepared from the following components in percentage by mass: 8.0 percent to 18.0 percent of Zn, 4.0 percent to 9.0 percent of Si, 0.5 percent to 4.0 percent of Cu, 0.3 percent to 1.2 percent of Mn, 0.1 percent to 0.5 percent of Zr, 0.1 percent to 0.9 percent of V, 0.1 percent to 0.4 percent of Er, 0.05 percent to 0.6 percent of Sr, 1.0 percent to 3.0 percent of TiC / TiB2 and the balance of Al and inevitable impurities. The Al-Zn heat-treatment-free aluminum alloy provided by the invention is compact in structure, fine in crystal grain, uniform in solute element distribution and excellent in mechanical property, and can meet the application requirements of the fields of automobiles and spaceflight on aluminum alloy materials.

The invention relates to a double-sided local electronic electroplating method and a double-sided cleaning device and a double-sided electronic electroplating mold used in the method, and belongs to the technical field of double-sided local semiconductor electronic electroplating. The method comprises the following steps: after pre-treating a semiconductor device, sequentially performing first-time plating piece washing, double-sided local plating of a bottom layer metal film, second-time plating piece washing, plating piece pickling, third-time plating piece washing, double-sided local plating of noble metal and fourth-time plating piece washing; wherein the double-sided local plating of the bottom layer metal film and the double-sided local plating of the noble metal are both subjected to double-sided local electroplating treatment by using a double-sided electronic electroplating mold. According to the invention, the pollution of the residual noble metal electroplating solution on the surface of the mold silica gel to semiconductor devices and the replacement reaction between metals are avoided, and the excellent binding force between the noble metal plating layer and the bottom plating metal layer of the continuously produced electronic electroplating device is maintained.

The invention provides a preparation method of an environment-friendly modified glyoxal water repellent agent, which comprises the following steps: purging and replacing air in a reaction kettle with nitrogen, adding a glyoxal aqueous solution into the reaction kettle, adjusting the pH value to 3-5 with an alkali solution, and then adding urea according to the molar ratio of glyoxal to urea of (1.0-2.0): 1, the reaction temperature of 40-75 DEG C and the reaction time of 1-2 hours; polyhydric alcohol is added into the obtained solution, the molar ratio of polyhydric alcohol to glyoxal is (1.0-1.5): 1, a reaction is conducted for 2-3 h at the temperature of 60-85 DEG C, and the modified glyoxal water repellent agent is obtained. The process is simple, the raw materials are cheap and easy to obtain, the reaction conditions are mild, the viscosity of the coating is moderate after the coating is applied, and the wet friction resistance, glossiness and smoothness of paper can be well improved in the papermaking coating process. Compared with a traditional water-resistant agent, the modified glyoxal water-resistant agent can better meet the performance requirement of paper, and the quality of the paper is improved.

The invention provides a corrugated corner plate of a liquefied gas storage tank and the liquefied gas storage tank. The corrugated corner plate comprises a corrugated corner plate body, the corrugated corner plate body comprises a first plate body and a second plate body, a corner part is formed at the intersection of the first plate body and the second plate body, and the included angle alpha between the first plate body and the second plate body is 90-degree lt; [alpha] [lt]; 180 degrees; the first corrugation is formed on the first plate body; the second corrugation is formed on the second plate body, and the second corrugation and the first corrugation intersect at the corner part; and an indented portion formed at an intersection of the first corrugation and the second corrugation. According to the corrugated corner plate, the indented part has severe material deformation, so that the strength and the stability of the corrugated corner plate are guaranteed, the environmental adaptability is improved, and a feasible implementation mode is provided for closed connection of the tank body.

The invention relates to the field of welding materials of austenitic stainless steel, in particular to a flux-cored wire based on concentrated nitric acid corrosion-resistant austenitic stainless steel and a preparation method, and aims to solve the problems that an existing welding material of the austenitic stainless steel is poor in concentrated nitric acid corrosion resistance, intergranular corrosion and stress corrosion cracking are prone to occurring in a concentrated nitric acid environment, and the welding quality is poor. Therefore, the service life and the safety of the equipment are influenced. According to the austenitic stainless steel flux-cored wire, by optimizing the chemical components and the preparation process, the corrosion resistance and the welding performance of the welding wire in a concentrated nitric acid environment are remarkably improved, the use requirements in a high-corrosion environment can be met, and a welded joint has high strength and toughness; the performance requirement of an engineering structure on a welding joint can be met; the austenitic stainless steel flux-cored wire is suitable for welding equipment, pipelines and structures in contact with concentrated nitric acid in the industries of chemical engineering, petrochemical engineering, pharmacy and the like, and has wide application prospects.

The invention belongs to the technical field of call service processing, and discloses a real-time call question and answer matching processing method, which comprises the following steps of: converting voice into characters in real time, and sending preprocessed voice data into an ASR service for real-time conversion; real-time text processing and grouping are carried out, and texts are extracted, sorted and grouped through role detection and grouping and timestamp correction; and processing the text after the call, and matching the text with the identified groups in the call process. According to the method, calling of the TEXTCNN model is dispersed to the call process, so that the processing method remarkably reduces the time required for centralized text processing after the call is ended, which means that even if the call duration is relatively long, the response duration of filing information can be effectively controlled due to the fact that the processing is dispersed to the whole call period, and the user experience is improved. Therefore, the performance requirement of outputting filing information within 5 seconds after on-hook can be met even in peak hours.

The invention relates to an updating method and device of a basic input and output system, equipment and a storage medium, and belongs to the technical field of computers. The method comprises the steps that kernel information of an operating system and version information of the basic input and output system are obtained; if the kernel information of the operating system does not meet the preset standard, detecting whether the operating system supports a target drive program updating function or not; if the operating system does not support the target drive program updating function, configuring an environment variable of the operating system based on the compatibility configuration script so as to support the target drive program updating function; and when the operating system supports the target drive program updating function, determining a drive program updating file so as to update the basic input / output system. According to the invention, the compatibility and operability of the server and the stability and reliability of system operation are improved, the user experience is improved, the maintenance process is simplified, and the production efficiency is improved.

The invention provides an NC30Fe high-chromium nickel-based alloy pierced billet as well as a preparation method and application of the NC30Fe high-chromium nickel-based alloy pierced billet. The preparation method comprises the following steps: firstly, heating an NC30Fe high-chromium nickel-based alloy tube blank to a specific charging temperature, and perforating by utilizing a hot cross rolling perforation process; in the punching process, it is ensured that the dimensional tolerance and eccentricity of a pierced billet meet the requirements by strictly controlling the roller distance, the top temperature and the extension coefficient; and then, quenching treatment is carried out on the pierced billet subjected to perforation, so that the grain size is controlled to be within the range of grade 3 to grade 7, and the high-temperature strength and creep resistance of the material are improved. According to the preparation method disclosed by the invention, through introduction of a hot cross piercing process, the problems of more surface defects, large eccentricity and difficulty in grain control caused by a traditional hot extrusion process are solved, the yield is increased to 93% or above, and the surface smoothness and the dimensional precision are remarkably improved. The pierced billet is suitable for preparation of high-temperature corrosion-resistant and high-precision nickel-based alloy pipes in the fields of petroleum, chemical engineering, aerospace and the like, and has high application value.

The invention discloses a preparation method of a high-performance Cu-Be-Co alloy strip. The preparation method comprises the following steps: preparing raw materials according to alloy components and contents of 0.2-0.4 wt% of Be, 0.5-0.6 wt% of Co and the balance of Cu; the preparation method comprises the following steps: smelting an alloy ingot by adopting a vacuum induction electromagnetic suspension furnace; on the basis of traditional solid solution-deformation-aging, the content of Be and Co in the Cu-Be-Co alloy is controlled, and cold deformation treatment is added after aging. According to the method, the mechanical property of the Cu-Be-Co alloy is greatly enhanced while the high conductivity is guaranteed, the Cu-Be-Co alloy strip with excellent comprehensive performance is obtained, the tensile strength of the obtained alloy strip reaches 863 Mpa, the conductivity is about 49.9% IACS, and the stress relaxation resistance performance that the stress relaxation is smaller than 10% within 100 h at the room temperature is achieved. The method is relatively simple, easy to operate and low in cost, and can meet the performance requirements of the copper alloy for contact current carrying.

The invention belongs to the technical field of polymer materials, and provides a nylon elastomer, a nylon elastomer foam material and a preparation method and application thereof, the intrinsic viscosity of the nylon elastomer under the conditions of 150 DEG C and 0.01 Hz is 200-50000 Pa.s; the characteristic temperature of the nylon elastomer is 120-170 DEG C, and the characteristic temperature represents the temperature at which the energy storage modulus is equal to the loss modulus of the nylon elastomer. Through the design of specific intrinsic viscosity and characteristic temperature, the nylon elastomer has excellent foamability, and a nylon elastomer foaming material prepared by foaming of the nylon elastomer is uniform in foam hole, small in foam hole diameter, stable in property, low in shrinkage rate, high in foaming ratio, high in rebound resilience and excellent in mechanical property; the comprehensive performance of the foam material is greatly improved, and the foam material has a wide application prospect.

The invention provides a resin composition, and a prepreg, a laminated board and a metal foil-clad laminated board containing the same. The resin composition comprises the following components in parts by mass: 20-90 parts of a component A and 5-60 parts of a component B, the component A comprises addition reactants of a maleimide compound a1 containing at least two N-substituted maleimide groups in one molecule and an amine compound a2 containing at least two primary amino groups in one molecule; and the component B is benzocyclobutene resin. Through design and mutual compounding of the component A and the component B, the problem of phase splitting caused by insufficient compatibility of a maleimide compound and low-polarity resin is solved, and the warping degree of a laminated board and a metal foil-clad laminated board at room temperature and after reflow soldering is further reduced; the resin composition and the laminated board and the metal foil-clad laminated board comprising the same have excellent performances such as high glass transition temperature and low thermal expansion coefficient, and fully meet the performance requirements of high-speed packaging substrate materials.

The invention provides a heat damage test method and device for a vehicle bumper and a vehicle, and the method comprises the steps: controlling a to-be-tested vehicle to carry out at least one group of heat damage tests in a test site based on at least one group of preset test working condition parameters under the condition that the to-be-tested vehicle reaches a preset test state; for each group of heat damage tests, acquiring an actually measured surface temperature value corresponding to a target bumper mounted in the to-be-tested vehicle at the test vehicle speed included in the test working condition parameters; based on the actually measured surface temperature value, a surface correction temperature value corresponding to the target bumper is obtained through a preset data correction formula, and whether the surface correction temperature value is larger than a calibration temperature value or not is judged; and if not, determining that the target bumper meets the performance requirement corresponding to the heat damage test. By means of the method, the accuracy and efficiency of the vehicle bumper heat damage test are improved, and then the heat damage risk of the vehicle bumper is reduced.

The invention provides a heat-treatment-free high-strength and high-toughness aluminum alloy and a preparation method and application thereof.The high-strength and high-toughness aluminum alloy comprises Al, Si, Fe, Cu, Mn, Mg, Zn, Ca, Pb, Sb, Be, Ti, Mo, V, Zr, Sr and inevitable impurities, and the preparation method comprises the steps that (1) aluminum raw materials are molten to obtain molten aluminum; (2) doping components are added into the molten aluminum, component regulation and control and cooling treatment are carried out, and then a refiner is added for alloying; (3) a refining agent is added into the molten aluminum for refining and degassing, standing is carried out after slagging-off, and component confirmation is carried out; and (4) adding an alterant into the molten aluminum, blowing and stirring, discharging soup, and carrying out die casting to obtain the high-strength and high-toughness aluminum alloy. The heat-treatment-free high-strength and high-toughness aluminum alloy is produced through a matching mechanism among various elements and by means of specific smelting conditions, the performance requirements of automobile structural parts are fully met, and the application prospect of the material is expanded.