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A 3D modeling and measurement method for microscopic multiphase structure based on cross-section profile sequence

A multi-phase structure and three-dimensional modeling technology, which is applied in three-dimensional metallographic testing, mechanical manufacturing technology and image measurement fields, can solve problems such as high cost, low precision, and difficult reconstruction of three-dimensional models

Active Publication Date: 2021-02-26
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to change and solve the three-dimensional measurement of particle phase, crystal and pore microstructure in multi-phase materials such as particle-reinforced composite materials, polycrystalline metals and porous materials, and the three-dimensional model weight of such materials. In order to solve the problems of high construction difficulty, low precision and high cost, it provides a device capable of realizing multi-phase material entity measurement and three-dimensional model reconstruction

Method used

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  • A 3D modeling and measurement method for microscopic multiphase structure based on cross-section profile sequence
  • A 3D modeling and measurement method for microscopic multiphase structure based on cross-section profile sequence
  • A 3D modeling and measurement method for microscopic multiphase structure based on cross-section profile sequence

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Experimental program
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Effect test

Embodiment 1

[0036] A three-dimensional modeling and measurement device for microscopic multiphase structure based on the sequence of cross-sectional profiles, mainly for samples of particle-reinforced composite materials, such as figure 1 As shown, it is mainly composed of high-precision CNC three-axis mobile platform, indexable precision plane grinding and polishing device, image acquisition device and accessories:

[0037] The high-precision CNC three-axis mobile platform includes: the frame body of the three-axis mobile platform is composed of a base and a column perpendicular to the base on one side of the base. There are a pair of X-guiding rails on the base parallel to the direction of the column, and the X-guiding rails are in front of the base. In the middle of the side and the rear side, there is an X-direction worktable on the X-direction rail that can move linearly on the X-direction rail. The X-direction rail and the X-direction worktable form a sliding pair, and the X-directio...

Embodiment 2

[0043] A method for modeling and measuring a three-dimensional model of a microscopic multiphase structure based on a sequence of cross-sectional profiles. The sample type is mainly a particle-reinforced composite material. The following steps are carried out:

[0044] (1) Make the particle-reinforced composite material sample into a metallographic test sample, then place the sample on the tray, and then clamp the sample with clamps;

[0045] (2) Start the grinding wheel indexing motor, X-direction linear reciprocating motor and Y-direction linear reciprocating motor, so that the first grinding wheel is located directly above the sample, move the beam downward, and use the first grinding wheel to perform trial grinding on the sample until the test The surface of the sample is completely ground by the grinding wheel;

[0046] (3) Keep the position of the beam unchanged, drive the X-direction linear reciprocating motor and the Y-direction linear reciprocating motor, so that the ...

Embodiment 3

[0057] The difference from the second embodiment is that the reconstruction of the high-precision three-dimensional metallographic model after grinding the polycrystalline metal material layer is realized.

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Abstract

The invention relates to the technical fields of mechanical manufacturing and image measurement in mechanical engineering, in particular to the field of three-dimensional metallographic testing. A three-dimensional modeling and measurement method for microscopic multiphase structure based on the profile sequence of the microscopic multiphase structure. The sample of the microscopic multiphase structure material is made into a sample for metallographic testing, and the first grinding wheel, the second grinding wheel, and the third grinding wheel are used for trial grinding. At the same time, the upper surface image of the sample is collected through the first microlens, the second microlens, and the third microlens, and the contour data of each phase boundary in the tomographic image is determined by edge detection and sub-pixel subdivision algorithms, and eight-field continuous code tracking and The NURBS free-form surface reconstruction method reconstructs the three-dimensional model of the closed boundary of each phase, and obtains the three-dimensional solid model of each phase through Boolean operations.

Description

technical field [0001] The invention relates to the technical fields of mechanical manufacturing and image measurement in mechanical engineering, in particular to the field of three-dimensional metallographic testing. Background technique [0002] In the 3D simulation analysis of multiphase materials such as particle-reinforced composite materials, polycrystalline metals, and porous materials, as well as the 3D simulation analysis of molding and cutting processes, and the physical measurement of 3D dimensions, it is necessary to measure the 3D dimensions of particle phases, crystals, and pores. , and generate a three-dimensional model reflecting the multi-phase material entity, which lays the foundation for evaluating the preparation quality of materials or performing high-precision three-dimensional simulation analysis. At present, the two-dimensional scale measurement and analysis of ordinary metallographic testing of multi-phase materials such as particle-reinforced compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84G01B11/24G01B11/00
CPCG01B11/002G01B11/24G01N21/84
Inventor 董志国侯张敏马志鹏刘沛林朱徐辉刘建成张晓东白小云
Owner TAIYUAN UNIV OF TECH
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