112 results about "Volume deformation" patented technology

A method adjusting a user interface experience for a device that includes providing a user interface to retrieve a user input, providing a tactile interface layer that defines a surface and includes a volume of fluid and a displacement device 10 that manipulates the volume of fluid to deform a particular region of the surface into a tactilely distinguishable formation retrieving a user preference between a first type, location, and/or timing and a second embodiment, location, and/or timing through the user interface, and manipulating the volume of fluid to deform a particular region of the surface into a tactilely distinguishable formation of one of the first and second type, location, and/or timing is disclosed.

The invention discloses crack-resistant abrasion-resistant hydraulic concrete and a preparation method thereof. The hydraulic concrete comprises materials of cement, sand, stones, a polypropylene fiber, a water reducing agent, an air entraining agent and water, and is characterized in that: an internal curing agent and silica fume powder are added; by adopting the internal curing agent as a super absorbent resin, internal maintenance of the concrete is enhanced, the concrete shrinkage is reduced, the abrasion resistance of the concrete is improved, and the crack resistance of the concrete is improved; by adopting the silica fume powder, the concrete mixture performance and abrasion resistance are improved, the comprehensive utilization of industrial wastes and resource and energy conservation are realized, and the environment is protected; and taking concrete at C40 strength grade as an example, the abrasion resistance is 23.52h/kg/m<2>, the early plastic shrinkage crack resistance reaches the first grade, cracks are not formed on the surface of the concrete, an air shrinkage value within 28 days is 162*10<-6>, and the autogenous volume deformation within 28 days is 20*10<-6>. The technical scheme is simple in technical operation, readily available in raw materials, lower in production cost and better in economic and social benefits.

The invention provides a buffer layer for a sulfide solid-state battery. The buffer layer comprises a polymer material and ethylene carbonate, and is formed in situ on an electrode plate through a buffer layer solution; and due to the existence of a polymer, poor physical contact between an electrode and an electrolyte caused by volume deformation of a positive electrode material in a charging/discharging process can be improved. The buffer layer is existent between the positive electrode and the solid electrolyte of the solid-state battery and between the negative electrode and the solid-state electrolyte, so that the solid-solid interface impedance can be reduced; and meanwhile, good ionic conductivity of the buffer layer can improve the lithium ion transmission capacity. The sulfide composite positive electrode in the solid-state battery provided by the invention contains the polymer material, and the existence of the polymer can improve the poor physical contact between the electrode and the electrolyte caused by the volume deformation of the positive electrode material in the charging/discharging process; and meanwhile, the solid-state battery contains the buffer layer, so that the solid-state battery has low interface resistance and high ionic conductivity, and is excellent in capacity and cycling performance.

The invention relates to a lithium ion supplementing technology of lithium ion batteries. The technology includes firstly, preparing a silicon carbon negative pole piece; then preparing a Li-naphthalene solution; soaking the prepared silicon carbon negative pole piece in the Li-naphthalene solution for 2 hours; and performing leaching. The silicon carbon negative pole piece is embedded with a certain amount of lithium ion before a battery is prepared, and irreversible capacity losses due to an SEI film which is formed by embedding lithium ions into a negative pole for the first time can be eliminated. Under the same charging and discharging depth, volume deformation amplitude reduction of silicon based negative materials during a lithium ion embedding and extracting process after the lithium ion supplementing can help improve the cyclic stability of silicon carbon negative pole based lithium ion batteries. Through experimental confirmation, charging and discharging efficiency of the silicon carbon negative pole for the first time can be significantly enhanced, and the cyclic stability can be improved as well.

The invention discloses a method for measuring volume deformation of a large-volume concrete bottom plate by using a laser wireless distance meter. The method mainly comprises the following steps of after the concrete bottom plate is cast and primarily concentrated, respectively spanning the laser distance meter connected with a computer and a laser reflecting plate at the opposite positions of the two sides of the concrete bottom plate; starting the laser distance meter, radiating laser emitted by the laser distance meter onto the laser reflecting plate to generate a distance signal between the laser distance meter and the laser reflecting plate, and transmitting the distance signal to the computer, wherein when the concrete bottom plate is expanded and retracted, the distance signal generated between the laser distance meter and the laser reflecting plate is correspondingly changed; measuring and recording the distance signal to obtain the volume change of the concrete bottom plate; and measuring the deformation of the concrete bottom plate by using the laser distance meter and the laser reflecting plate.

The invention relates to a stable zirconia ceramic target material for electron beam physic vapor deposition (EB-PVD), and its preparation method, and belongs to the ceramic material preparation field. The ceramic target material with a good deposition performance is obtained by adopting a two-step solid phase sintering process with highly pure zirconia and an oxide stabilizer as raw materials. The preparation method comprises the following steps: carrying out high temperature solid phase synthesis and ball milling to prepare ceramic powder raw materials with stable crystal phase and uniform granularity, carrying out high pressure molding through combining molding pre-pressing with isostatic pressing, carrying out dimensional fine finishing, and carrying out low temperature sintering to prepare the EB-PVD ceramic target material. The ceramic target material prepared in the invention has the advantages of accurate chemical components, stable crystal phase, and small high-temperature volume deformation, has a microscopic crystal grain size uniformity of below 5mum, and satisfies technologic requirements of no splashing of the EB-PVD technology, and stable composition and performances of the obtained coating. The two-step solid phase sintering process realizes a short high temperature sintering time, low temperature heat treatment of the target material reduces the energy consumption, and the preparation method has the advantages of simple technology and equipment, good batch performance stability, and realization of the popularization to the industrialized production.

The invention discloses a surface coated and modified lithium lanthanum zirconium oxygen-based solid electrolyte material and preparation method and application thereof. The electrolyte material comprises a core and a coating layer, wherein the coating layer is coated on a surface of the core, the core is a lithium lanthanum zirconium oxygen-based solid electrolyte (LLZO), and the coating layer material is at least one of amorphous-state glass solid electrolyte materials with lithium ion conductivity. The involved coating layer material is relatively high in flexibility, the coated and modified lithium lanthanum zirconium oxygen can form favorable interface contact with an electrode material in a solid-state lithium battery composite electrode, the volume deformation of the composite electrode during the circulation process is reduced, and the energy density and the cycle stability of the lithium lanthanum zirconium oxygen-based solid-state lithium battery are further improved.

The invention provides a positive electrode material with low internal resistance and particularly relates to a positive electrode material with low internal resistance for a solid state lithium battery and a preparation method of the positive electrode material. The positive electrode material with low internal resistance is prepared from a positive electrode active material core and a surface composite material layer covering the positive electrode active material core, wherein the surface composite material layer is mainly prepared from a nano long-range conducting material and a single ionconductor polymer material. The positive electrode material with low internal resistance, provided by the invention, has higher electronic conductivity and lithium ion conductivity and can effectively reduce the internal resistance of the solid state lithium battery; because the positive electrode active material core and the surface composite material layer have strong interaction, the phenomenaof granule cracking and grinding caused by volume deformation of the positive electrode active material core in repeated charging and discharging process can be effectively inhibited so as to ensurethe structural integrity of the positive electrode active material core and good interface stability; and furthermore, the technical scheme provided by the invention is simple and easy, low in production cost and suitable for performing large-scale production.

The invention discloses an electrode for a secondary battery. At least one of an upper surface and a lower surface of the electrode is provided with a plurality of pits, the top projection area of each pit is 25 square nanometers to 250000 square micrometers, a depth of each pit is 10 nanometers to 500 micrometers, and a central distance between two adjacent pits is 10 nanometers to 1000 micrometers. When used as a secondary battery electrode, the electrode can effectively limit an electrochemical active metal such as metal lithium in the pits, so that dendritic crystals (for example, lithium dendritic crystals) of the electrochemical active metal can be prevented from appearing on the surface of the electrode, the huge volume deformation of the electrode in an alloy reaction process can be buffered, and the safety performance and cycle life of the metal secondary battery can be improved and prolonged. The invention also provides a preparation method and application of the electrode.

The invention relates to a straight expansion artificial muscle and its driven bended joint. Said bended joint can be used as the executor of machine or the finger, knee and elbow joints of robot. The invention belongs to the application technique of robot and mechanical electric. The inventive elastic-wave case of artificial muscle can be aerated as the power of muscle. And it is characterized in that two hinges are utilized to make the aerated elastic-wave case only extend along the axes without bend and distortion; the volume deformation of elastic-wave case can be calculated and measured, while its structure is designed easily; the control method of joint is easier; it can be integrated with flat spring, torsion spring and drawing spring; and the joint of said straight artificial muscle has single or several freedom degrees.

A method for deformable registration including determining a vector field from a two-dimensional matching of a volume of an object of interest and a two-dimensional image of the object of interest, providing a deformation profile, and finding a volume deformation that maps to a state of the two-dimensional image, wherein the deformation is parameterized by the vector field and control points of the deformation profile to find a control point configuration of the volume deformation.

The invention provides vacuum heat insulation material, a heat insulation box and equipment employing the vacuum heat insulation material, and a method of making the vacuum heat insulation material, wherein the vacuum heat insulation material has improved production property, can be made by common devices, is low in cost and good in heat insulation property. The vacuum heat insulation material comprises wrapping material (2) with gas isolating property and core material (4) wrapped by the wrapping material (2); a surface of the vacuum heat insulation material is provided with grooves (9), and a backside opposite to the surface provided with the grooves (9) is provided with protrusion rib portions (10) corresponding to the grooves (9); the grooves (9) and the protrusion rib portions (10) are formed by equal volume deformation, so the thickness (t1, t2, t3) in an insulation direction is equalized, and the width (L1, L2) of a deformation scope is proximately equal.

The invention discloses a method and a device for measuring concrete or mortar volume deformation. The method comprises the following steps: pouring a mixture mixed by concrete or mortar into an open mold testing box according to engineering needs; wholly putting the open mold testing box filled with the concrete or mortar mixture into a heat insulation bottle; sealing the bottle opening of the heat insulation bottle by using a sealing cover provided with a graduated tube, a gas-guide tube and a thermometer; pouring liquid which is not dissolved with water into the heat insulation bottle through the graduated tube, so that the mold testing box is totally immersed by the liquid and the liquid is full of an inner cavity of the heat insulation bottle; and putting the whole heat insulation bottle into a constant temperature water area, so that the volume expansion or shrinkage deformation conditions of the concrete or mortar under heat insulation conditions can be accurately measured through the liquid level position conditions in the graduated tube. The method has the advantages of high measurement accuracy, simple structure, convenience in operation and the like.

The invention discloses silicon-carbon composite granules and a preparation method and an application therefor. The silicon-carbon composite granules mainly comprise nanometer silicon, carbon nanotubes and organic cracked carbon; the carbon nanotubes wind mutually to form a porous granular structure; the carbon nanotubes alternately penetrate nanometer silicon gaps to form a porous structure to be used as a nanometer silicon carrier, and a conductive network is provided; by virtue of the porous structure, volume expansion of the nanometer silicon in a charging-discharging process can be effectively relieved; the space between the nanometer silicon and the carbon nanotubes is filled with the organic cracked carbon, so that attachment of the nanometer silicon on the carbon nanotubes can be improved, detachment of the nanometer silicon after volume deformation can be prevented, and direct contact between the nanometer silicon and an electrolyte is reduced at the same time; the silicon-carbon composite granules have excellent cycling performance, specific capacity, rate capability and low volume expansion effect, and can be used as an ideal negative electrode material of a lithium ion battery; and meanwhile, the production process is simple and easy to control, the product dimension is uniform, the appearance is regular and tidy, and large-scale industrial production can be achieved favorably.

The invention discloses an ultrasonic technology-based method for detecting and evaluating damage of subgrade soil materials in seasonal frozen regions. The method comprises the following steps: an initial state sample and a test sample are prepared according to an evaluation scheme on the basis of a formed sample meeting requirements of subgrade soil; the initial state sample is not subjected tofreeze-thaw cycles and has humidity being the evaluation standard moisture content; the test sample is a soil sample which is subjected to freezing and thawing cycling and has humidity at the requiredmoisture content for testing; the initial state sample and the test sample are both subjected to geometric parameter measurement and ultrasonic wave velocity test, the volume deformation rate of thetest sample and the longitudinal wave velocity of the test sample and the initial state sample are obtained, the longitudinal wave velocity, the moisture content and the volume deformation rate of thetest sample are measured according to the longitudinal wave velocity and moisture content of the initial state sample, and the damage variable of the test sample is calculated. Therefore, with the method, the damage degree of soil can be evaluated accurately, comprehensively and non-destructively and the damage mechanism can be reflected without destructive tests.

A method for measuring the penetration quantity of a rubber membrane in large-scale triaxial test of coarse-grained soil belongs to the technical field of geotechnical tests. The measurement method ischaracterized in that a small confining pressure cyclic loading process is arranged in a conventional isotonic consolidation test, the volume variation quantity of a recoverable sample under a smallconfining pressure increment condition under different confining pressures is measured, and the measurement of the penetration quantity of the rubber membrane and the change law of the penetration quality with the confining pressure is realized based on the penetration recoverability of the rubber membrane. The measuring method is easy to implement in a conventional triaxial apparatus, has the advantages of simple operating steps and low difficulty, can be coupled to a conventional consolidation test process without affecting subsequent test, avoids the links of a development device, multi-time sample production and multi-group test in some measuring methods, effectively eliminates the influences of the individual discreteness of the sample, can accurately measure the penetration quantityof the rubber membrane changing with the confining pressure, provides a reliable technical way for correcting the volume deformation of the coarse-grained soil sample in the triaxial test, promotes the study of the mechanical properties and the constitutive model of he coarse-grained soil, and has good promotion values.

The invention discloses a stress-free strain related analysis method in concrete stress strain monitoring. The method is characterized by comprising the following steps of: 1) acquiring concrete sample data, and measuring temperature variation of concrete relative to reference time and corresponding stress-free strain by adopting a stress-free meter; and 2) performing programming by using a computer according to the sample data, and separating out temperature strain, self-grown volume deformation and dry-shrinkage wet-swelling deformation from the actually measured stress-free strain. The method has good comprehensive effect, is easily realized on the computer, has accurate results, and is simple, feasible and universally practical; and the concrete temperature strain and the self-grown volume deformation can be quickly and accurately separated from the actually measured results of the stress-free meter, a more effective method is provided for learning and mastering the actual physical properties of the concrete, and the effect of the stress-free meter is exerted more quickly and more accurately in the concrete stress monitoring.

The invention relates to a device for testing early frost heave deformation of cement concrete and a method thereof, which solve the problem of large precision difference of test results due to ambient temperature influence in the prior art. The device is characterized in that one end of a cable ties an upper end of a sealing bag, the other end is connected with an upper end of a container B through a pulley, and a lower part of the container B is immersed below a water surface in a container C. The testing method comprises the following steps: placing the sealing bag in freezing liquid, continuously adding fine sand in the container B, wherein the top of the container B and the sealing bag are in a same height, and recoding height of the liquid surface in the container C; and when a buoyancy added value of the container B in the container C is equal with the buoyancy added value generated by expansion of the sealing bag, performing conversion to obtain volume swelling capacity generated by concrete freezing by monitoring a difference value of water scale values H in the container C. The method is capable of evaluating freeze injury damage degree by monitoring the early frost heaveamount of concrete, and performing real-time monitoring on volume deformation of frozen concrete, and precision is high.

The invention discloses a simulation method for vibration cumulative deformation based on compressive nonlinear change and shear-shrinkage abrupt change characteristic materials, and relates to the field of deformation of metered solids. In order to simulate the vibration cumulative deformation of the compressive non-linear change and the shear-shrinkage abrupt change characteristic material, based on a cyclic constitutive model theory and a numerical value implementation method, an acquisition step of related cyclic constitutive model parameters is executed, and a stress-driven simulation step of the vibration cumulative deformation of the related material is executed. According to the invention, the behavior that the rigidity and the strength of the material are nonlinearly changed along with the ambient pressure and the relative compactness can be comprehensively reflected; the characteristic that the shear shrinkage trend of the material changes suddenly along with the increase ofthe shear stress can be reflected; the simulation step has first-order accuracy and unconditional linearization stability; and the long-term accumulated axial deformation, shear deformation and volume deformation of the material can be accurately predicted.

The invention provides a real-time testing device and a real-time testing method of size deformation after cement based composite materials hardening. The real-time testing device and the real-time testing method of the size deformation after the cement based composite materials hardening comprise a measurement component, a detachable component and a fixing component, wherein the fixing component comprises a base and an outer die. The outer die is arranged at an edge of the base and is perpendicular to the base. The detachable component comprises a round inner die which is perpendicular to the base, and the diameter of the round inner die is 0.5-0.8 times as long as the width of the outer die. The measurement component comprises a dial indicator and a test probe, and the dial indicator penetrates through holes formed in the outer die and the round inner die. The test probe is pre-embedded in a test piece, and the position of the test probe corresponds to the dial indicator. Through a round inner forming test piece, wherein the diameter of the round inner forming test piece is far larger than the height of the round inner forming test piece, the test piece is enabled to freely set, harden and deform in the outer die with the diameter larger than that of the inner die, radial deformation quantity of the test piece after preheating is continuously tested by the adoption of the dial indicator, and under the premise that the test piece is not moved, and the deformation of the test piece cannot be restrained by containers around, the testing device can effectively, continuously and accurately test shrinkage and deformation of the cement based composite material after hardening.

The invention discloses temperature-responsive hydrogel and a preparation method thereof. The temperature-responsive hydrogel comprises a first network monomer and a second network monomer crosslinked with the first network monomer. The first network monomer forms a flexible network structure and has temperature responsiveness. The second network monomer has a rigid network structure. The temperature-responsive hydrogel has good temperature responsiveness, can produce large volume deformation by change of an extraneous environment, has good mechanical properties, can bear a large outside force, can form 4-5 time deformation under action of an outside force and has modulus of about 30KPa.

The invention discloses a method for calculating volume deformation of rock pores under freezing and thawing effects. The method comprises the following steps: firstly, testing the porosity of a rockby utilizing a low-field nuclear magnetic resonance testing technology, and calculating a total volume of the pores of the rock; then testing the tensile strength of the rock and the volume modulus ofice, so as to obtain the size of a frost heave force and the volume modulus of the ice under freezing and thawing temperature; establishing a calculation model of the volume deformation of the rock pores under the freezing and thawing effects according to volume changes of a phase change process of changing water in a single saturated pore into the ice under the action of low temperature; finally, substituting obtained parameters into the established calculation model, so as to obtain the pores deformation of the rock which is frozen for one time. According to the method disclosed by the invention, the problem in a traditional calculation method that the volume of the water, which is completely frozen, in the rock pores is difficult to calculate under the freezing and thawing effects is solved; pore volume and elastic-plastic volume ratios of a rock test sample before and after freezing and thawing can be calculated by utilizing the calculation method provided by the invention.

The invention discloses an analog detecting method for concrete grown volume deformation, comprising the following steps: a, integrally forming concrete and a strain gauge; b, placing concrete into a heat insulation sample chamber; c, detecting the temperature in the heat insulation sample chamber, and controlling a cooling device or a heating device to enable the temperature change curve in the heat insulation sample chamber to be consistent with concrete on-site temperature change curve; d, detecting internal temperature and deformation of the concrete sample to obtain change curves of internal temperature and deformation of the concrete sample; and e, processing the temperature change curve and the change curves of the internal temperature and deformation of the concrete sample to obtain detection experimental data and complete detection. The invention further discloses a detecting device for realizing the method. The invention can accurately simulate the process of on-site large-volume concrete deformation and has little error between detected concrete deformation and on-site condition, and therefore, the invention has high practicality for concrete characteristic estimation.

The invention provides negative electrode materials of a silicon-liquid metal composite lithium battery and a preparation method. The negative electrode materials of the silicon-liquid metal composite lithium battery comprise 95 to 98 parts of silicon-based materials and 2 to 5 parts of liquid metals in parts by weight. According to the negative electrode materials of the silicon-liquid metal composite lithium battery provided by the invention, the high-temperature volume micro-variation of the liquid metals is used to buffer the stress changes induced by volume deformation of the silicon based materials, which effectively restrain the volume expansion of the silicon based materials; and besides, the liquid metals can effectively stabilize an interface between an electrode material and electrolyte, stabilize the growth of an SEI membrane, and improve the energy density of the battery and the stability of the electrolyte.

The invention relates to the field of lithium ion batteries, in particular to a titanium niobate negative electrode material and preparation method thereof. The titanium niobate negative electrode material comprises a core structure and a shell structure coating the surface of the core structure, wherein the main component of the core structure is titanium niobate; and the main component of the shell structure is lithium titanate and is prepared through steps of liquid preparation, coating and drying. The titanium niobate negative electrode prepared in the invention has excellent ionic conductivity and electronic conductivity, the impedance of the negative electrode is reduced, the discharge capacity is improved, and in the lithium battery charge and discharge process, the volume deformation of a negative electrode sheet is effectively reduced.

The invention belongs to the technical field of civil engineering materials, and particularly relates to a composite admixture for high-speed railway rail slab concrete, wherein the composite admixture is prepared by mixing the following components: 20-55% of a sub-nanometer mineral material, 20-45% of superfine slag powder, 25-45% of glass micro-bead, 0.1-0.5% of a water reducer, 0.1-0.5% of a defoamer, 1.0-2.0% of an excitant, 1.0-3.0% of nanometer silicon dioxide, and 0.2-1.0% of an enhancer. According to the present invention, the composite admixture does not contain chlorine salts, does not rust steel bars, can rapidly increase the early strength of concrete and rapidly reduce the curing temperature, can further provide effects of concrete hydration heat release rate reducing, concrete cracking reducing and concrete volume deformation reducing, and can effectively solve the problems of slow early demolding strength increase, high curing cost and easy rail slab cracking and warpagedeformation of the existing rail slab concrete production process.

The invention discloses a preparation method of high-volume stable stability concrete, and the high-volume stability concrete is mainly applied to a high-temperature and dry environment. The high-volume stable concrete comprises the following components in a mix proportion: 900-1200 kg/m<3> of rubbles, 500-800 kg/m<3> of river sand and 300-500 kg/m<3> of binding material, wherein the mixing amount of an efficient water reducing agent is 0.3-1.2%; the water-binder ratio value is 0.2-0.5; the rubbles are obtained by mixing rubbles in three granularity ranges in proportions; the river sand consists of river sand in two granularity ranges; the binding material is composed of Portland cement, superfine slag powder and coal ash. The concrete provided by the invention has a higher aggregate stacking density (65-75%), so that the using amount of the binding material is reduced, the proportions of admixtures such as slag and coal ash are higher, the segregation resistance, bleeding capacity and early-stage volume stability (particularly plastic shrinkage crack resistance) of the concrete are obviously improved, and the later volume deformation (self-constriction and drying shrinkage) of the concrete is smaller; the preparation method is particularly suitable for preparing C30-C50 grade concrete applied in high-temperature and dry regions.