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Method for calculating porous material hole structure fractal dimension

A porous material, fractal dimension technology, applied in suspension and porous material analysis, permeability/surface area analysis, measurement device, etc. Low-cost, physically meaningful effects

Inactive Publication Date: 2009-04-22
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a calculation method for the fractal dimension of the porous material pore structure, which can effectively solve the problem that the existing fractal dimension cannot completely describe the complex pore structure of the tested porous material. Practical Issues with Features

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  • Method for calculating porous material hole structure fractal dimension
  • Method for calculating porous material hole structure fractal dimension
  • Method for calculating porous material hole structure fractal dimension

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Embodiment Construction

[0034] A method for calculating the fractal dimension of a porous material pore structure according to the present invention comprises the following steps:

[0035] Step 1. Use an image acquisition device to capture a two-dimensional pore structure image of the outer surface or a section of the porous material to be detected, and transmit the collected two-dimensional pore structure image to a computer for analysis and processing to obtain a two-dimensional image of the porous material to be detected. A pore boundary image, the two-dimensional pore boundary of each pore in the two-dimensional pore boundary image is a plane polygon composed of a plurality of pixels as vertices. Wherein, in the collected two-dimensional pore structure image, there is an obvious color contrast between the image regions corresponding to the solid skeleton material of the porous material and the pore space respectively. The image acquisition device is a metallographic microscope or a scanning elect...

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Abstract

The invention discloses a computational method for porous material pore structure fractal dimension, which comprises the following steps: the dimensional pore edge image of the porous materials to be detected is obtained; the dimensional pore edge of each pore in the dimensional pore edge image is a planar polygon which comprises of a plurality of pixels as climaxes; the coordinate value of each climax of the planar polygon is determined by a computer; a feature factor Z of each pore is obtained by processing and calculation with a computer; the processing procedure of the computer comprises the following steps: an irregular factor Q of each pore is calculated; an acutance factor A of each pore is calculated; the feature factor Z of each pore is calculated; the fractal dimension DS of the appearance of each pore is calculated. The computational method can effectively solve the practical problem that the current fractal dimension can not completely represent structure characteristics of complex holes of the porous materials to be detected.

Description

technical field [0001] The invention relates to the technical field of analysis and characterization of the pore structure of a porous material, in particular to a calculation method for the fractal dimension of the pore structure of a porous material. Background technique [0002] Porous materials are an important class of structurally and functionally integrated materials that exist widely in nature and engineering applications. Due to the existence of a large number of pores inside it, it has many excellent properties different from dense materials, but due to the different sizes of pores, random distribution, and disordered pore space structure, the pore structure description and performance research of porous materials become complicated. change. The traditional pore structure performance testing and research method is to equate pores to a cylindrical pore model. Compared with the actual complex pore structure, this cylindrical pore model is too simplified, and it is d...

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Application Information

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IPC IPC(8): G01N15/08G01B11/26
Inventor 奚正平朱纪磊汤慧萍王建永李程
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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