Method for analyzing microstructure of porous body, and program and microstructure analyzer for the same

Patent metadata

Field	Value
Publication number	US-2016307318-A1
Application number	US-201615086684-A
Country	US
Kind code	A1
Filing date	Mar 31, 2016
Priority date	Apr 14, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A method for analyzing a microstructure of a porous body is, for example, a method using porous-body data in which positional information providing a position of a voxel of a porous body obtained by three-dimensional scanning is associated with voxel type information including information that allows determination as to whether the voxel is a spatial voxel representing a space or an object voxel representing an object. This method includes (a) a step of defining an imaginary surface that is in contact with at least one object voxel present on a surface of the porous body, and identifying, as opening-related voxels, spatial voxels that are in contact with the imaginary surface and spatial voxels that continuously lie in a linear direction from the imaginary surface; and (b) a step of analyzing a microstructure of the porous body on a basis of the opening-related voxels.

First claim

What is claimed is:

1 . A method for analyzing a microstructure of a porous body using porous-body data in which positional information providing a position of a voxel of a porous body obtained by three-dimensional scanning is associated with voxel type information including information that allows determination as to whether the voxel is a spatial voxel representing a space or an object voxel representing an object, the method comprising:
(a) a step of defining an imaginary surface that is in contact with at least one object voxel present on a surface of the porous body, and identifying, as opening-related voxels, a spatial voxel that is in contact with the imaginary surface and a predetermined number or more of spatial voxels that continuously lie in a predetermined linear direction from the imaginary surface toward an inside of the porous body or identifying, as opening-related voxels, a predetermined number or more of spatial voxels that continuously lie in a predetermined linear direction from the imaginary surface toward an inside of the porous body; and (b) a step of analyzing a microstructure of the porous body on a basis of the opening-related voxels.

2 . The method for analyzing a microstructure of a porous body according to claim 1 ,
wherein in the step (a), the imaginary surface is defined as a plane parallel to any of an XY plane, an XZ plane, and a YZ plane in three-dimensional coordinates; or a plane which is in contact with three or more object voxels present on the surface of the porous body and in which a triangle formed by at least one set of three object voxels selected from the three or more object voxels includes a barycenter of the surface of the porous body.

3 . The method for analyzing a microstructure of a porous body according to claim 1 ,
wherein in the step (b), when the microstructure of the porous body is analyzed on a basis of the opening-related voxels, the microstructure of the porous body is analyzed on a basis of at least information obtained from the opening-related voxels that appear on the imaginary surface.

4 . The method for analyzing a microstructure of a porous body according to claim 3 ,
wherein in the step (b), the information is information concerning straight pores constituted by opening-related voxels that continuously lie in the linear direction from the imaginary surface.

5 . The method for analyzing a microstructure of a porous body according to claim 1 ,
wherein in the step (b), when the microstructure of the porous body is analyzed on a basis of the opening-related voxels, a plane obtained by shifting the imaginary surface in an inward direction of the porous body by a predetermined distance is defined as an imaginary reference plane, and the microstructure of the porous body is analyzed on a basis of at least information obtained from the opening-related voxels that appear on the imaginary reference plane.

6 . The method for analyzing a microstructure of a porous body according to claim 5 ,
wherein in the step (b), the information is information concerning a pore-linear portion that is an aggregate of opening-related voxels adjacent to each other on the imaginary reference plane.

7 . The method for analyzing a microstructure of a porous body according to claim 5 ,
wherein in the step (b), when the predetermined distance is set, multiple pieces of porous-body data having different porosities are prepared in advance, a relationship between a distance from the imaginary surface to an imaginary section and a proportion of the opening-related voxels on the imaginary section is determined for each of the porous-body data, a range of the distance in which an ascending order of the proportion matches an ascending order of the porosity is determined, and the predetermined distance is set within the range.

8 . A program causing one or more computers to execute each step in the method for analyzing a microstructure of a porous body according to claim 1 .

9 . A microstructure analyzer comprising:
storage for storing porous-body data in which positional information providing a position of a voxel of a porous body obtained by three-dimensional scanning is associated with voxel type information including information that allows determination as to whether the voxel is a spatial voxel representing a space or an object voxel representing an object; identification device for defining an imaginary surface that is in contact with at least one object voxel present on a surface of the porous body, and identifying, as opening-related voxels, spatial voxels that are in contact with the imaginary surface and a predetermined number or more of spatial voxels that continuously lie in a predetermined linear direction from the imaginary surface toward an inside of the porous body or identifying, as opening-related voxels, a predetermined number or more of spatial voxels that continuously lie in a predetermined linear direction from the imaginary surface toward an inside of the porous body; and an analyzer for analyzing a microstructure of the porous body on a basis of the opening-related voxels.

Assignees

• Ngk Insulators Ltd

Inventors

• Sakai Ayaka
• Sakashita Satoshi
• Nagaoka Hiroyuki

Classifications

• G06T7/0004 Primary

  Industrial image inspection · CPC title

• G06T7/60

  Analysis of geometric attributes · CPC title

• G06T15/08

  Volume rendering · CPC title

• G06T7/0014 Primary

  using an image reference approach · CPC title

• G06T2207/30004

  Biomedical image processing · CPC title