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In-situ Brazilian test apparatus suitable for X-ray CT system

A test device, X-ray technology, applied in the field of in-situ Brazil test devices, can solve the problems of high sample stability requirements, metal materials are prone to artifacts, and do not have positioning functions, etc., to achieve good stability and alignment , low density and high compression modulus

Inactive Publication Date: 2018-11-30
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of experimental mechanics, the Brazilian test generally uses a metal arc indenter of a predetermined size on the material testing machine as the loading device, but due to the large size of the indenter used in the material testing machine, and metal materials are prone to artifacts during CT testing , so it is not suitable for CT in situ Brazil test
At the same time, the size of the sample required in the CT in situ test is often very small, and CT scanning has high requirements on the stability of the sample. At present, the metal arc indenter commonly used in experimental mechanics does not have the function of fixing the sample.
In addition, in some Brazilian tests with prefabricated defects, there are high requirements for the alignment of the samples, and the current general-purpose metal arc indenters do not have the positioning function of alignment and alignment

Method used

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  • In-situ Brazilian test apparatus suitable for X-ray CT system
  • In-situ Brazilian test apparatus suitable for X-ray CT system
  • In-situ Brazilian test apparatus suitable for X-ray CT system

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Embodiment 1

[0025] Such as figure 1 As shown, the present invention provides an in-situ arc Brazil test device suitable for X-ray CT systems. The device includes an arc pressing surface (1), a rectangular base (2), a fixed baffle (3) and a positioning engraving Line (4), wherein the circular arc pressing surface (1) is arranged in the middle of the rectangular base (2), fixed baffles (3) are arranged on both sides of the long side of the rectangular base (2), and the rectangular bottom surface and the assembly The upper and lower plane anvils of the mechanical loading device on the X-ray CT system are kept in good contact. The fixed baffle (3) is used for precise positioning of the disc sample. The relative distance between the two fixed baffles (3) and the thickness of the sample keep the assembly size positive The tolerance is +0.04~+0.1mm. At the same time, the positioning engraved line (4) is processed at the midline position outside the fixed baffle. The fixed baffle is provided with t...

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Abstract

The invention discloses an in-situ Brazilian test apparatus suitable for an X-ray CT system. The apparatus includes an arc-shaped pressing surface, a base, two fixed baffles and gauge marks. The arc-shaped pressing surface is arranged on the middle of the base which is rectangular in shape; the fixed baffles are arranged on two sides of long sides of the rectangular base; the gauge marks are arranged on the center lines of the outer sides of the fixed baffles; there are two observing windows on the fixed baffles at opposite positions. The Brazilian test apparatus is suitable for the X-ray CT system and can be repeatedly used, has excellent stability and collimation on small-size samples, is easy to use and has good adaptability, and can be applied to industrial X-ray CT systems in different models.

Description

Technical field [0001] The invention relates to the technical field of material performance testing, in particular to an in-situ Brazilian test device suitable for X-ray CT systems. Background technique [0002] The tensile strength of solid brittle explosives is one of its important mechanical properties. Due to the limitations of the direct tensile test method of explosives, the sample size is large and the amount of charge used is large, it is often difficult to sample special components in the development stage of explosive formulations. It meets the requirements of the above-mentioned standard sample preparation and cannot obtain its mechanical property data; in addition, the sample shape is more complicated, the processing accuracy is high, and the sample preparation cycle is long also seriously affects the research progress; at the same time, the dumbbell-shaped tensile sample is in the test Loading eccentricity is easy to occur, leading to stress concentration and damage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08
Inventor 陈华原曾年李敬明戴斌刘本德刘晨
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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