Light one-way loading test device and application thereof

A loading test device, one-way technology, applied in the direction of measuring device, using applied stable tension/pressure to test material strength, using wave/particle radiation for material analysis, etc.

Inactive Publication Date: 2020-04-28
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current research work on the influence of powder compression molding process parameters on density is still mainly focused on the stage of qualitative description, and the quantitative relationship between process parameters and porosity has not been studied in ...

Method used

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  • Light one-way loading test device and application thereof
  • Light one-way loading test device and application thereof
  • Light one-way loading test device and application thereof

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specific Embodiment

[0049] The total height of the test device is 526mm (excluding the bottom connection plate), the maximum outer diameter is 120mm, and the maximum loading force is 1kN. The main material of the device is mainly 304 stainless steel, with a total weight of about 6kg; the bottom connection plate can be used with a three-jaw chuck to fix the device. The diameter of the connection plate is 35mm and the height is 18mm, which can be customized according to the size of the specific three-jaw chuck Land.

[0050] The sample sleeve is a PEEK tube with an outer diameter of 25mm, an inner diameter of 10mm, and an effective height of 143mm. The height of the sample loading area reserved inside is 20mm. The loading force is above 8KN and can meet the stability requirements during loading. In order to eliminate the metal artifacts existing in the CT scanning process, PEEK contact caps can be installed on the upper and lower sides of the sample loading area through prefabricated threads to sep...

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Abstract

The invention belongs to the field of micro tests of geotechnical engineering and material engineering and discloses a light one-way loading test device and an application thereof. The device comprises a machine body, a sample fixing assembly, a force sensor and a loading assembly. The machine body comprises a top plate, an upper connecting rod, a cylinder body, a lower connecting rod and a base which are sequentially fixed from top to bottom, and a cylinder bottom cover and an outer cylinder are sequentially fixed to the lower end of the cylinder body; the sample fixing assembly comprises a sample pipe sleeve, a cup head screw and a force transmission guide rod, and the sample pipe sleeve is fixed to the top plate and allows X-rays to penetrate through; the cup head screw is mounted at anupper end of the sample pipe sleeve, and the force transmission guide rod is positioned in the sample pipe sleeve to form a closed space in the sample pipe sleeve; the upper end of the force sensor is connected with the force transmission guide rod, and the lower end is connected with the loading assembly; and the loading assembly is used for driving the force transmission guide rod to move. In the invention, a problem that a mechanical behavior of a granular material cannot be visually observed in a micro material science test under CT scanning is solved, and a basis is provided for explaining a micromechanical behavior of the granular material.

Description

technical field [0001] The invention belongs to the micro-test field of geotechnical engineering and material engineering, and more specifically relates to a light-duty unidirectional loading test device and its application. Background technique [0002] When reclamation and island construction are carried out, the filling materials are mainly made of nearby reef rock and soil, and it is inevitable to encounter calcareous sand, a special rock and soil medium of marine biogenesis with a calcium carbonate content greater than 50%. Single particle unconfined uniaxial loading test and group particle confined compression test can effectively reveal its macroscopic mechanical properties, which are of great significance to its engineering application. However, since calcareous sand is mainly deposited by coral and shell fragments without long-distance transportation, it has special characteristics such as complex particle shape and rich internal pore structure. These characteristi...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N23/046
CPCG01N3/08G01N23/046
Inventor 周博汪华斌胡高阳杨博申嘉伟郭昱辰吕珂臻杨坤
Owner HUAZHONG UNIV OF SCI & TECH
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