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Method for measuring internal permeability of prepreg with three-dimensional space analysis

A detection method and three-dimensional space technology, which can be applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problem of inability to truly detect the permeability of prepreg materials, and achieve the effects of high accuracy, simple operation and easy process.

Active Publication Date: 2012-01-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem that the existing method cannot truly detect the permeability inside the prepreg; and provides a three-dimensional space analysis detection method for the internal permeability of the prepreg

Method used

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  • Method for measuring internal permeability of prepreg with three-dimensional space analysis
  • Method for measuring internal permeability of prepreg with three-dimensional space analysis
  • Method for measuring internal permeability of prepreg with three-dimensional space analysis

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specific Embodiment approach 1

[0010] Specific Embodiment 1: In this embodiment, the detection method of three-dimensional spatial analysis of the internal permeability of prepreg is realized according to the following steps: the prepreg is placed in a polytetrafluoroethylene plastic tube, and then placed in a high-resolution micro-CT Then, under the conditions of voltage 80kV and current 80μA, the 3D image of the prepreg was obtained after rotating 180° or 360° with a rotation angle increment of 0.4°, and the 3D image of the prepreg was analyzed by Advanced Bone Analysis software. Process to obtain the volume R1 of the colored area and the total volume of the prepreg as R, and then bring it into the formula: R1 / R×100%, that is, the detection of the internal permeability of the prepreg by three-dimensional space analysis is completed.

specific Embodiment approach 2

[0011] Specific embodiment two: in this embodiment, the detection method of three-dimensional space analysis prepreg internal permeability is realized according to the following steps: cut off the glass cloth phenolic resin prepreg with a diameter of 2 cm and a thickness of 1 cm from the production line, put Put the prepreg into the PTFE plastic tube, put the prepreg into the PTFE plastic tube, and then put it in the high-resolution micro-CT, and then under the condition of the voltage of 80kV and the current of 80μA, the rotation angle increment is Acquire a 3D image of the prepreg after a 0.4° rotation of 180° (see figure 1 ), using the Advanced Bone Analysis software to process the 3D image of the prepreg to obtain the volume of the colored area R1 = 24.86mm 3 And the total volume of prepreg is R=36.49mm 3 , and then put into the formula: R1 / R×100%=68.13%, that is, the three-dimensional spatial analysis of the internal permeability detection of the prepreg is completed.

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specific Embodiment approach 3

[0013] Specific embodiment three: in this embodiment, the detection method of three-dimensional space analysis prepreg internal permeability is realized according to the following steps: cut off the glass cloth phenolic resin prepreg with a diameter of 2 cm and a thickness of 1 cm from the production line, put Put the prepreg into the PTFE plastic tube, put the prepreg into the PTFE plastic tube, and then put it in the high-resolution micro-CT, and then under the condition of the voltage of 80kV and the current of 80μA, the rotation angle increment is Acquire 3D image of prepreg after 0.4° rotation 360°, (see figure 2 ), using the Advanced Bone Analysis software to process the 3D image of the prepreg to obtain the volume of the colored area R1 = 24.86mm 3 And the total volume of prepreg is R=36.49mm 3 , and then put into the formula: R1 / R×100%=68.13%, that is, the three-dimensional spatial analysis of the internal permeability detection of the prepreg is completed.

[0014]...

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Abstract

The invention discloses a method for measuring internal permeability of a prepreg with three-dimensional space analysis, relating to a method for measuring the internal permeability of the prepreg. The invention aims at solving the technical problem that the internal permeability of the prepreg can not be really measured with the present methods. The method comprises the following steps: putting the prepreg in a teflon plastic tube, then putting the teflon plastic tube with the prepreg in a high resolution micro-CT to acquire 3D images of the prepreg, using a software named Advanced Bone Analysis to process the 3D images of the prepreg to acquire R1 which represents the volume of color range and R which represents the total volume of the prepreg, then substituting R1 and R into a formula or R1 / R*100%, so that the measurement of the internal permeability of the prepreg with three-dimensional space analysis is complete. According to the invention, the internal permeability of the prepreg can be measured accurately. The method has the advantages of simple process and easy operation, and can be used for process measurement of the prepreg formed by gumming of various kinds of reinforcing material and different resin matrixes.

Description

technical field [0001] The invention relates to a method for detecting the internal permeability of a prepreg. Background technique [0002] Prepreg is a combination of fibers or fabrics impregnated with a certain amount of resin, processed into a resin matrix and a reinforcement under certain processes and conditions, and is an intermediate material for manufacturing composite materials. At present, prepregs have been widely used in defense industries such as aerospace, civil industries such as energy and automobiles, so the research on prepregs is of great significance. [0003] The detection of internal permeability during prepreg processing is an important evaluation index of prepreg. The amount of glue impregnated with fibers or fabrics is small, the impregnation inside the prepreg is uneven, and the quality of the prepreg product is poor, which will lead to unqualified products in the subsequent manufacturing process and cannot meet the needs of continuous production....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/04
Inventor 姜波黄玉东刘丽白永平孟令辉白惠文费飞飞潘海涛
Owner HARBIN INST OF TECH