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Method for nondestructive testing closed pore rate of porous material based on industrial CT

A non-destructive testing, porous material technology, applied in suspension and porous material analysis, measurement device, permeability/surface area analysis, etc. Strong, accurate and precise effects

Inactive Publication Date: 2019-06-21
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Secondly, at present, very few researchers use porous tantalum in the medical field, but it is only in the stage of small laboratory tests, and has not been really promoted, and no research has been carried out on the porosity detection of tantalum, and only the existing There are methods for testing other porous materials. However, as mentioned above, in addition to damage, the existing detection methods also have defects such as inaccurate or inaccurate test results, but they can accurately or accurately detect the pore parameters of porous tantalum. It is of great necessity for its application in the medical field

Method used

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  • Method for nondestructive testing closed pore rate of porous material based on industrial CT
  • Method for nondestructive testing closed pore rate of porous material based on industrial CT
  • Method for nondestructive testing closed pore rate of porous material based on industrial CT

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Embodiment 1

[0042] Embodiment 1: as figure 1 , 2 , 5, 6 and 7, this embodiment is for figure 1 The sample 1# shown is tested. Sample 1# is a medical porous tantalum implant. The medical implant is columnar, with a length of 80mm and a diameter of φ10mm. thread.

[0043] Before using the method of this embodiment for detection, first select a complete sample 1#, and use industrial CT to detect it. The industrial CT used in this embodiment is a 600kV / 225kV dual-source industrial DR / CT imaging system. The device is available on the market. The industrial CT in this embodiment is purchased from the China Academy of Engineering Physics. Its main technical parameters are as follows:

[0044] Detection method standard scan focus size Conventional ≤0.4mm, microscopic ≤6μm Penetration Maximum Equivalent Steel Thickness 60mm Detectable workpiece diameter ≤500mm Image quality meter sensitivity Better than 1.5% Maximum magnification ratio of micro-CT 200...

Embodiment 2

[0062] Embodiment 2: as image 3 , 4 , 5, 6 and 7 show: the present embodiment is for such as image 3 The sample 2# shown is tested. Sample 2# is also a medical porous tantalum implant. The medical implant is columnar, with a length of 10 mm and a diameter of φ10 mm.

[0063] Before adopting the method of this embodiment for detection, first select a complete sample 2#, and use industrial CT to detect it. This embodiment uses the same industrial CT as that of Embodiment 1. The specific detection steps are as follows:

[0064] Step 1: Start the industrial CT device system and perform training on the industrial CT ray tube;

[0065] Among them, if the industrial CT is not turned on at intervals of more than 24 hours, it will perform training processing, enter the time and number of downtime days, and select the system to automatically train the machine. If the industrial CT is powered on within 24 hours, no training is required.

[0066] Step 2: Cover the X-ray emission ex...

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PUM

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Abstract

The invention discloses a method for nondestructive testing the closed pore rate of a porous material based on industrial CT. The method specifically comprises the following steps: obtaining a DR image of a porous sample piece by adopting industrial CT scanning, then reconstructing a three-dimensional model of the porous material, obtaining the total volume and the closed pore volume of the porousmaterial through VGStudio MX software, and obtaining the closed pore rate of the sample through a formula (the closed pore volume / sample volume)*100%.

Description

[0001] Technical field: [0002] The present invention relates to a method for detecting closed porosity of porous materials, in particular to a nondestructive detection method for closed porosity of porous materials based on industrial CT. [0003] Background technique: [0004] Porous materials, as a new type of engineering material with excellent performance in both function and structure, have been widely used in industries such as metallurgical machinery, petrochemical industry, energy and environmental protection, national defense and military industry, nuclear technology, biopharmaceuticals, and medical equipment. For example, porous materials can be used for energy absorption and shock absorption, noise reduction and noise reduction, such as impact plates for automobiles, used as sound filters; porous materials can be used to filter and separate gases or liquids, so as to achieve the purification and separation of media ; Porous materials can be used in heat exchangers ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 叶雷郝莉娜邓阳全
Owner CHONGQING RUNZE PHARM CO LTD