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Method for temperature rise of sample before dynamic loading process

A dynamic loading and sample technology, which is applied in the preparation of test samples, etc., can solve the problems of large error in results and achieve the effects of improving loading quality, accurate data, and avoiding displacement

Inactive Publication Date: 2015-12-16
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for heating up the sample before the dynamic loading process, to solve the problem of large error in the results caused by the existing heating method, and to achieve the purpose of improving the accuracy of the experimental measurement

Method used

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  • Method for temperature rise of sample before dynamic loading process

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Embodiment

[0024] Such as figure 1 Shown, a kind of method of the present invention is used for sample heating up before dynamic loading process, comprises the following steps:

[0025] (A) Preparation of experimental materials: electrode plate 1 with a polished surface, a cylindrical sample with a diameter of 10 mm, a thickness of 1 mm and polished on both sides 4, and a polished LiF window 3;

[0026] (B) Fix sample 4: apply glue on both sides of sample 4 and bond them to electrode plate 4 and LiF window 3 respectively;

[0027] (C) Fasten sample 4: Before the glue solidifies, limit the LiF window 3, sample 4, and electrode plate 1 in the area where the sample is installed, and apply continuous pressure using the limit loading device: the limit loading device includes limit Position frame 9, the limit frame 9 is fixed on the electrode plate 1 through a plurality of fixing screws 7, a limit rod 8 suspended above the sample 4 is arranged on the limit frame 9, and the bottom end of the l...

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Abstract

The invention discloses a method for temperature rise of a sample before a dynamic loading process. A limiting loading device is arranged to applying a persistent pressure, and comprises a limiting frame fixed on an electrode plate by a plurality of fixing screw rods; a limiting rod suspended above a sample is arranged on the limiting frame, the tail end of the bottom of the limiting rod is provided with a limiting washer acting on the sample, and a pressurizing spring sleeves the limiting rod between the limiting washer and the limiting frame. After the sample is fixed, persistent pressure is applied to the sample, so that glue can be extruded from an interlayer after being melt in a temperature rise process, the sample is kept at the original position, clearances between the sample and the electrode plate of which the surface is flat by polishing as well as between the sample and a LiF window with a polished surface are eliminated due to the persistent pressure, displacement is avoided, the aim of improving a loading quality is improved, experimental data are more accurate and measuring precision is improved.

Description

technical field [0001] The invention relates to the field of research on dynamic behavior of materials such as phase transition, constitutive relationship, and state equation, and in particular to a method for raising the temperature of a sample before a dynamic loading process. Background technique [0002] The initial temperature T 0 is an important parameter. The difference in the initial temperature directly leads to the difference in the mechanical conditions required for the phase transition of the material, resulting in the difference in the expression form of the constitutive relationship and the equation of state. In order to study the influence of initial temperature on the dynamic behavior of materials, it is usually necessary to change the initial temperature state of the sample before using dynamic loading techniques such as gas cannon and magnetic drive ramp loading technology to study the dynamic behavior of materials, so that the sample area The temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 蔡进涛税荣杰吴刚种涛
Owner INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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