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Nondestructive testing method for porosity of porous material based on industrial CT

A non-destructive testing and porous material technology, applied in suspension and porous material analysis, measurement devices, permeability/surface area analysis, etc., can solve problems such as damage, inaccurate or inaccurate test results, and achieve accurate and precise results Effect

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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  • Nondestructive testing method for porosity of porous material based on industrial CT
  • Nondestructive testing method for porosity of porous material based on industrial CT
  • Nondestructive testing method for porosity 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 20...

Embodiment 2

[0066] Embodiment 2: as image 3 , 4 , 5 and 6 show: this 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.

[0067] Before adopting the method of this embodiment for detection, the first complete sample 2# is selected, and the same industrial CT as in embodiment 1 is used.

[0068] The specific detection steps are as follows:

[0069] Step 1: Start the industrial CT device system and perform training on the industrial CT ray tube;

[0070] 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.

[0071] Step 2: Cover the metal sheet at the X-ray emission exit of the industrial CT s...

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Abstract

The invention discloses a porosity detection method for porous material based on an industrial CT. The method specifically comprises the following steps: obtaining a DR image of a porous sample pieceby adopting industrial CT scanning, then reconstructing a three-dimensional model of the porous material, obtaining the total volume and the pore volume of the porous material through VGStudio MX software, and obtaining the porosity of the sample through a formula pore volume / sample volume)*100%.

Description

[0001] Technical field: [0002] The present invention relates to a method for detecting the porosity of a porous material, in particular to a nondestructive detection method for the porosity of a porous material 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 with...

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