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Device of determining elastic modulus of graphite by sound velocity method

A technology of elastic modulus and graphite, which is applied in the field of elastic modulus testing of graphite materials, can solve the problem that the coaxiality between the measuring probe and the graphite sample cannot be guaranteed, and achieve the effect of improving the test accuracy, avoiding leakage and high measurement accuracy.

Active Publication Date: 2018-12-25
SINOSTEEL NEW MATERIAL ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above problems, the present invention provides a device for measuring the elastic modulus of graphite by the speed of sound method, which limits the longitudinal degree of freedom of the graphite sample by using the clamping mechanism, and automatically corrects the gap between the graphite sample and the measuring probe during the limiting process. The coaxiality between the measuring probes, and then the graphite sample is clamped by the measuring probe moving in the opposite direction at a constant speed, so that the graphite sample is fixed between the measuring probes, which solves the technical problem that the coaxiality between the measuring probe and the graphite sample cannot be guaranteed, and improves the test accuracy. , at the same time, use the driving force of the clamping mechanism to make the smearing mechanism apply the coupling agent to the measuring probe equally and evenly

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  • Device of determining elastic modulus of graphite by sound velocity method
  • Device of determining elastic modulus of graphite by sound velocity method
  • Device of determining elastic modulus of graphite by sound velocity method

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Embodiment 1

[0074] Such as figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 8 Shown, a kind of sonic method measures the device of elastic modulus of graphite, comprises pulse generator 1, is connected with pulse generator 1 electric signal and the measuring probe 2 that is arranged symmetrically, and the oscilloscope 3 that is connected with pulse generator 1, also include:

[0075] A driving mechanism 4, the driving mechanism 4 drives the symmetrically arranged measuring probes 2 to move toward or in opposite directions at the same speed, which includes a driving assembly 41 and a guiding assembly 42 arranged in parallel;

[0076] Push-up mechanism 5, described push-up mechanism 4 is arranged on the below of described drive mechanism 4, and it is vertically arranged with described drive mechanism 4, and it is arranged in the middle part of described drive mechanism 4 longitudinal direction, and this push-up mechanism 5 carrying the graphite sample 10, and pushing the graphi...

Embodiment 2

[0128] Figure 20 It is a kind of structural representation of the embodiment two of the device that measures graphite elastic modulus by a kind of speed of sound method of the present invention; Figure 20 As shown, the parts that are the same as or corresponding to the first embodiment adopt the corresponding reference numerals of the first embodiment. For the sake of simplicity, only the differences from the first embodiment will be described below. The second embodiment is similar to the first embodiment. figure 1 The difference of the shown embodiment one is:

[0129] Such as Figure 20 to Figure 22 As shown, a device for measuring the elastic modulus of graphite by the speed of sound method also includes a correction arm 22 arranged under the measurement probe 2 and connected to the measurement probe 2. The correction arm 22 is symmetrically arranged on both sides of the push-up mechanism 5, and the The calibration arm 22 moves with the measuring probe 2 to perform calib...

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Abstract

The invention provides a device of determining an elastic modulus of graphite by a sound velocity method. The device comprises a pulse generator, measurement probes, and an oscilloscope connected withthe pulse generator, and further comprises a driving mechanism, a push-up mechanism and a clamping mechanism, wherein the measurement probes are in electrical signal connection with the pulse generator and arranged symmetrically; the clamping mechanism is used for limiting a longitudinal degree of freedom of a graphite sample; in addition, in a limiting process, coaxiality between the graphite sample and the measurement probes is automatically calibrated; the measurement probes moving oppositely at a constant speed clamp the graphite sample, so that the graphite sample is fixed between the measurement probes; the device solves the technical problem that the coaxiality between the measurement probes and the graphite sample cannot be guaranteed; the testing accuracy is improved; and at thesame time, a driving force of the clamping mechanism is used for allowing an application mechanism to equally and uniformly apply a couplant to the measurement probes.

Description

technical field [0001] The invention relates to the technical field of elastic modulus testing of graphite materials, in particular to a device for measuring elastic modulus of graphite by a sonic velocity method. Background technique [0002] Elastic modulus, also known as Young's modulus, is an important performance parameter of engineering materials. From a macroscopic point of view, elastic modulus is a measure of the ability of an object to resist elastic deformation. From a microscopic point of view, it is an atom, ion or A reflection of the bonding strength between molecules. All factors that affect the bonding strength can affect the elastic modulus of the material, such as bonding mode, crystal structure, chemical composition, microstructure, temperature, etc. The elastic modulus can be regarded as an index to measure the difficulty of elastic deformation of the material. The larger the value, the greater the stress that causes the material to undergo a certain ela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/06G01N3/04G01N3/02
CPCG01N3/02G01N3/04G01N3/06G01N2203/0075G01N2203/0658
Inventor 杨辉许汉春毛玉珍
Owner SINOSTEEL NEW MATERIAL ZHEJIANG