System for measuring displacement field in reconstructed material component based on CT

Abstract

The invention discloses a system for measuring a displacement field in a reconstructed material component based on CT. The system comprises an experiment platform, a CT machine main body, a to-be-measured material component, iron sand particles, a substance identification and image processing computer, a control computer matched with a CT machine, a CT machine display control platform and a data analysis computer, wherein the CT machine is used for acquiring CT scanning data of the to-be-measured material component; the substance identification and image processing computer is used for carrying out three-dimensional reconstruction on the CT scanning data of the to-be-measured material component to obtain a three-dimensional position distribution diagram of iron sand particles of each moment; and the data analysis computer is used for carrying out image processing on the three-dimensional position distribution diagram of the iron sand particles, carrying out whole-field matching on positions of all the iron sand particles at different phases, and determining the position change of all the iron sand particles at the different moments to form the whole displacement field. The measurement system is simple to operate and has high precision; the influences on the mechanical property of the to-be-measured material component are small and the measurement of the whole displacement field in the material component is realized.

Description

technical field [0001] The invention relates to a measurement system for the internal displacement field of a material component, in particular to a measurement system for reconstructing the internal displacement field of a material component based on CT. Background technique [0002] Social production and living activities are inseparable from the application of various materials, and the scientific and rational application of these materials is inseparable from the study of the mechanical properties of these materials. The measurement of the internal displacement field of a material component is an important content in the study of the mechanical properties of a material, so it is of great significance to measure the internal displacement field of a material component. [0003] At present, most methods of measuring internal displacement of material components use buried displacement measurement probes to measure internal displacement. This type of method is contact measure...

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Problems solved by technology

[0003] At present, most methods of measuring internal displacement of material components use buried displacement measurement probes to measure internal displacement. This type of method is contact measurement, which can only obtain the displacement at some measuring points inside the material component, and it is difficult to obtain the displacement distribution of the entire field inside the material. , troublesome operation, the arrangement of measuring point probes will affect the mechanical properties of the material components to be tested

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