43 results about "Dynamic elasticity" patented technology

A polyurethane composition containing solid beads dispersed therein, characterized in that the polyurethane is a microcellular polyurethane foam and the composition has a storage modulus of elasticity at 40° C. of 270 MPa or more as measured by means of a dynamic elasticity measuring device: and a polyurethane composition containing solid beads dispersed therein, characterized in that the solid beads are capable of swelling with or being soluble in an aqueous medium. The former composition has excellent flattening capability, and the latter composition can provide a polished surface which combines good flatness and good uniformity and can also reduce scratches on the surface.

The invention belongs to the technical field of landslide control, and particularly relates to a power measuring method for anti-slide durability of a side slope anti-slide pile. The power measuring method comprises the following steps that S1, physical parameters of a to-be-measured side slope are determined; S2, the curve of maximum slide thrust borne by the anti-slide pile and anti-slide pile design parameters are determined, and the anti-slide pile is mounted; S3, dynamic Poisson ratio and dynamic elasticity modulus durability change rules of the anti-slide pile are measured; S4, the anti-slide pile structure durability damage variable is determined; S5, the anti-slide pile structure durability criterion is determined; and S6, anti-slide pile durability critical dynamic elasticity modulus value determining and stability detection and evaluation are achieved. According to the method, dynamic elasticity modulus parameters are introduced to be used as kinetic parameters for anti-slidepile anti-slide durability power measurement and stability evaluation, and by means of the parameters, the durability life and the durability stability of the anti-slide pile can be accurately measured.

An electro-optical module includes: an electro-optical panel; and a transparent protector disposed on a viewer-side surface of the electro-optical panel, wherein transparent protector has a stack structure including a first transparent protection layer that faces the electro-optical panel and is formed of an elastic material and a second transparent protection layer that has a higher dynamic elasticity value than that of the first transparent protection layer within a frequency range of 1 to 10 Hz.

The invention relates to the field of methods for testing or analyzing concrete by virtue of the chemical or physical properties of a measuring material, particular to an evaluation method of the self-repairing effect of a self-repairing cement-based material. The evaluation method of the self-repairing effect of the self-repairing cement-based material is characterized in that the evaluation indexes comprise relative dynamic elasticity modulus, fracture behaviors (stress intensity factor recover rate and fracture toughness recover rate), constitutive behavior comparison, flexural rigidity recover rate and strength recover rate. The evaluation method comprises the following steps: step 1, preparing a test piece; step 2, prefabricating local cracks and dispersed cracks; step 3, testing all the parameters; step 4, completing self repairing; step 5, testing all the parameters; step 6, calculating, processing, and evaluating the repairing effect. The method is comprehensive in evaluation.

The invention discloses a coupling computing method of dynamic elasticity characteristics of a high supersonic velocity flight vehicle. Starting from physical field characteristic times like aerodynamic force, aerodynamic heat, structural heat transfer and structural stress/deformation, on the premise of considering existing computing resources and not lowering coupling computing precision, the computing amount of a coupling analysis method is effectively reduced, and the coupling computing method can be applied to hot-gas dynamic elasticity analysis of an actual structure of the high supersonic velocity flight vehicle. By monitoring the change condition of the structural temperature field, dynamic adjustment of the coupling time step length can be achieved, and on the condition of effectively guaranteeing the coupling computing precision, the problem of improving the coupling computing efficiency by a large margin is solved. According to the coupling computing method of the dynamic elasticity characteristics of the high supersonic velocity flight vehicle, hot-gas dynamic elasticity characteristic analysis of whole-machine structure or parts of the high supersonic velocity flight vehicle can be effectively achieved; meanwhile, for flow-heat-solid coupling computing problems like the aerodynamic heat and heat transfer coupling problem and the structural heat safety evaluation problem which are also related to the flight vehicle, the coupling computing method also has the solving capability.

The invention relates to a measuring method of anisotropy coefficient of transverse isotropic rock in-situ dynamic elasticity modulus. In the measuring method, a first testing hole, a second testing hole, and a third testing hole are parallelly arranged on a flat plane of a transverse isotropic rock, wherein the orifices of the first testing hole, the second testing hole, and the third testing hole are all in an equilateral triangle shape. The axial dip angels of each testing hole are determined by whether the inclined angle between the isotropic surface of the transverse isotropic rock and the horizontal plane is greater than 45 degrees or not. The measuring method comprises: carrying out an ultrasonic wave longitudinal wave measurement on each testing hole through single-hole measurement mode; carrying out ultrasonic longitudinal penetration tests between any two holes in a hole-to-hole penetrating testing mode, and finally processing, calculating, and analyzing the measured wave speed data so as to obtain the anisotropy coefficient of transverse isotropic rock in-situ dynamic elasticity modulus. The provided measuring method has the advantages that the disturbance on the transverse isotropic rock is small and the measured anisotropy coefficient of transverse isotropic rock in-situ dynamic elasticity modulus is precise.

The invention relates to a method for evaluating roadbed grouting reinforcement effects. The method is characterized by comprising steps of (1), arranging measuring points; (2), testing pre-grouting roadbed dynamic elasticity moduli, in other words, testing the various detection positions and acquiring the pre-grouting roadbed dynamic elasticity moduli of the various detection positions by means of computation; (3), testing and acquiring post-grouting roadbed dynamic elasticity moduli; (4), evaluating the grouting reinforcement effects. Representative values E<0> of the roadbed dynamic elasticity moduli of the various measuring points in evaluation units are computed according to formulas, and representative values E<0><pre-grouting> of the pre-grouting roadbed dynamic elasticity moduli and representative value E<0><post-grouting> of the post-grouting roadbed dynamic elasticity moduli are computed, so that increase rates E<0><increase rate> of the roadbed dynamic elasticity moduli can be acquired by means of computation. The method has the advantages that the roadbed dynamic elasticity moduli can be quickly measured on the basis of a falling-weight deflectometer process and are feature parameters which reflect the soil strength of roadbeds, the method is nondestructive, speedy, simple and effective, and accordingly huge engineering loss due to roadbed grouting construction quality defects can be prevented.

The invention discloses a spring force detection device and a detection method thereof, comprising a double-layer support, a workpiece in-position identification mechanism, a workpiece positioning seat and a carbon brush jacking mechanism are arranged on the upper layer of the double-layer support, and a testing mechanism servo is arranged on the lower layer of the double-layer support. Control device, indexing device and force measuring mechanism. The present invention is a new mechanism for dynamic detection of the elastic force value of the motor carbon brush holder spring within the set stroke range, which solves the problems of incomplete spring force detection data and large fluctuation of detection results, and realizes the dynamic detection of the spring force within the elastic range. The detection of changing rules provides detailed and reliable basic data for scientific analysis and management of product technical quality status, and plays a key role in ensuring stable and reliable product quality.

The invention relates to a vibration based I-beam mechanical parameter nondestructive testing method. The corresponding relations between the elasticity modulus and the shear modulus and the geometric dimension, the bend frequency and the shear modulus of an I-beam are established through the empirical formula. Finally, the measured first-stage flexural resonance frequency ff and first-stage shear resonance frequency ft and the geometric dimension of the I-beam are taken as an input of the empirical formula, and the dynamic elasticity modulus E and the dynamic shear modulus G of the I-beam are obtained through calculation. The provided I-beam mechanical parameter nondestructive testing method overcomes the limit that an engineering material needs to be made into a standard sample when the mechanical parameter of the material is tested, overcomes the influences of the machining process on the mechanical parameter of the material, simplifies the testing steps of the traditional testing method and the damage on the structure in the testing process, and is suitable for the practical application condition of the I-beam; the flexural resonance frequency and the shear resonance frequency of the I-beam are recognized, and the dynamic mechanical parameter of the I-beam is efficiently, accurately and nondestructively tested.

The utility model discloses a portable dynamic elastic modulus tester controlled by a mobile terminal. The portable dynamic elastic modulus tester comprises a host, a transmitter and a receiver; thehost comprises a broadcasting module, an equipment connecting module, a processor and a lithium ion battery; the host is a cuboid; the broadcast module, the equipment connection module, the processorand the lithium ion battery are arranged in the host, the emitter and the receiver are arranged outside the host, the emitter and the receiver are connected with the host through cables, and the mobile terminals are in one-to-one connection with the equipment connection modules of the tester and perform bidirectional wireless communication through the broadcast module. A user carries a device without a display screen, the carrying weight is reduced, a mobile phone of the user controls and processes data, and the problems that a portable dynamic elasticity modulus tester is limited in information processing capacity, slow in processing and stuck are solved.

The invention discloses an integrated testing machine for quickly freeze thawing and detecting concrete. The integrated testing machine for quickly freeze thawing and detecting the concrete comprisesa testing machine case, wherein an automatic detection system is arranged on one side of the testing machine case; the detection process is accomplished through a testing detection platform and the automatic detection system; multiple extraction supports are arranged in the testing machine case, and the extraction supports comprise stainless steel frames; a handle is arranged on the top part of each extraction support; the testing detection platform comprises a rectangular platform; support steel plates are arranged on the front side and the back side of the platform; two sliding wheels are arranged on the bottom part of the support steel plate on each side; a slideway is arranged on an outer frame of the testing machine; the testing detection platform can slide on the slideway left and right. When the integrated testing machine for quickly freeze thawing and detecting the concrete provided by the invention is used for testing a concrete sample, the concrete sample is conveniently placed and taken out, the quality of the concrete sample and a dynamic elasticity modulus are automatically tested on the special testing platform for the integrated machine, and the data is automaticallystored.

The invention discloses a dynamic elastic satellite beam scheduling method, and the method comprises the steps: receiving task information inputted by a user, obtaining ephemeris information of a satellite, and processing the task information according to the ephemeris information to obtain a first task model and a resource model in three dimensions of time, space and frequency; and performing satellite beam scheduling on a preset dynamic elastic adjustment scheduling window length according to a preset triggering mechanism, the first task model and the resource model. The technical problem of low overall use efficiency of satellite beam scheduling in the prior art is solved.

The invention discloses a dynamic elastic scaling method based on a micro-service load, relates to the field of micro-services, and aims to monitor CPU, memory and time indexes according to a pre-configured scaling strategy, automatically trigger scaling behaviors and dynamically start/stop micro-service instances according to elastic resource conditions of a platform. The elastic expansion rule is more specific, the specific triggering rule is configured in combination with the actual service, automatic triggering and horizontal and vertical expansion are supported, and the purpose of automatic elastic expansion is achieved.

The invention relates to a device for measuring dynamic elastic characteristics of a soft deadening felt. The device comprises an upper vibration mass block, a lower vibration bottom plate, a vibration excitation table, an upper acceleration sensor, a lower acceleration sensor and a measurement module, wherein the lower vibration bottom plate is rigidly connected to a vibration head of the vibration excitation table; a sample block to be measured is clamped between the upper vibration mass block and the lower vibration bottom plate, the upper acceleration sensor is rigidly installed on the upper vibration mass block, the lower acceleration sensor is rigidly installed on the lower vibration bottom plate, the input end of the measurement module is connected to the upper acceleration sensor and the lower acceleration sensor, and the output end of the measurement module is connected to the vibration excitation table. The measurement module controls the vibration excitation table to generate vertical vibration of different frequencies, receives data collected by the upper acceleration sensor and the lower acceleration sensor, and obtains the dynamic elasticity modulus and the damping coefficient based on the data collected by the upper acceleration sensor and the lower acceleration sensor. Compared with the prior art, the dynamic elasticity modulus and the damping coefficient of thesoft deadening felt can be measured.

Articles including a substrate, a cover glass layer disposed over a top surface of the substrate, and an adhesive layer having a dynamic elastic modulus disposed between a bottom surface of the cover glass layer and the top surface of the substrate. The cover glass layer may have a thickness in the range of 1 micron to 200 microns. The dynamic elastic modulus of the adhesive layer may include a first elastic modulus in the range of 10 kPa to 1000 kPa measured at a stress frequency in the range of 0 Hertz to 5 Hertz and a temperature of 23 degrees C., and a second elastic modulus of 500 MPa or more measured at a stress frequency in the range of 10 Hertz to 1000 Hertz and a temperature of 23 degrees C. The adhesive layer may be optically transparent. The articles may be bendable electronic display devices or bendable electronic display device modules.

The invention relates to a high-efficiency damping backing plate which a unique structure and two bearing modes include a basic bearing mode and an additional bearing mode. When under dynamic loading, the high-efficiency damping backing plate adopts the basic bearing mode to bear, uses comprehensive effects of stretching, shearing, deflecting and appropriate compression deformation to provide elasticity and has low natural frequency, low dynamic/static stiffness ratio, appropriate damping ratio and good dynamic elasticity. Under accidental circumstances, when dynamic vertical load increases suddenly and exceeds the safety threshold, the high-efficiency damping backing plate automatically adopts the additional bearing mode to bear, and the stiffness of supporting points increases automatically and nonlinearly to be 2 to 3 times of the original stiffness, thus the safety reliability is improved. The high-efficiency damping backing plate can be used for the straight section and the bended section of the rail for transportation.

The invention belongs to the technical field of heterogeneous high-performance computing, and discloses a system and method for controlling the communication middleware among internal multi-class computing units. The computing task is matched with the computing units and the communication middleware according to the the business characteristics; and the middleware is specially used for solving theproblems that the data interaction interfaces among the computing units of various different structures in a heterogeneous system are inconsistent and the DMA cannot be configured for part of the computing units. The middleware can be used for replacing the part of computing units to configure DMA, and the DMA is uniformly used among various heterogeneous computing units to construct an intercommunication link, so that the data interaction is directly completed without the main memory of the system, a large number of memory operations are reduced, and the problem that a heterogeneous computing system is higher in computing time delay is solved, and the heterogeneous computing system which is low in time delay and dynamically and elastically adjusted is provided for a user so as to meet the high-performance computing requirements in the fields of spaceflight, medical treatment, e-commerce, artificial intelligence, entertainment and the like.