Three-dimensional modelling measurement method of microscopic multi-phase structure based on section profile sequence

A multi-phase structure and three-dimensional modeling technology, applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems such as low precision, high cost, and difficult reconstruction of three-dimensional models

Active Publication Date: 2019-04-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Three-dimensional modelling measurement method of microscopic multi-phase structure based on section profile sequence
  • Three-dimensional modelling measurement method of microscopic multi-phase structure based on section profile sequence
  • Three-dimensional modelling measurement method of microscopic multi-phase structure based on 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 field of machine manufacturing and the technical field of image measurement in mechanical engineering, and in particular relates to the field of three-dimensional metallographic testing. A three-dimensional modelling measurement method of a microscopic multi-phase structure based on a section profile sequence comprises the steps of: making a microscopic multi-phase structure material specimen into a specimen for metallographic testing, trying to grind through a first grinding wheel, a second grinding wheel and a third grinding wheel, simultaneously, acquiring an upper surface image of the specimen through a first microscopic lens, a second microscopic lens and a third microscopic lens, determining profile data of each phase boundary in a faultage image by using edge detection and sub-pixel subdivision algorithms, performing three-dimensional model reconstruction of the closed boundary of each phase by using eight-field joint mark tracking and NURBS freedom curve reconstruction methods, and obtaining a three-dimensional entity model of each phase through Boolean operation.

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 Applications(China)
IPC IPC(8): G01N21/84G01B11/24G01B11/00
CPCG01B11/002G01B11/24G01N21/84
Inventor 董志国刘建成张晓东白小云
Owner TAIYUAN UNIV OF TECH
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