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
CN109596618AActive Publication Date: 2019-04-09TAIYUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TAIYUAN UNIV OF TECH
Publication Date
2019-04-09

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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.
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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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