Carbon fiber reinforced polymer (CFRP) machined surface appearance representation method

A technology of surface morphology and composite materials, which can be used in measurement devices, instruments, etc., and can solve problems such as errors

Inactive Publication Date: 2013-12-25
陈慧群
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Problems solved by technology

[0003] At present, the surface morphology characterization technology of carbon fiber composite materials still adopts or borrows the characterization standards and evaluation models of the surface quality of metal workpieces based on the assumption of isotropy, so that even if very advanced surface roughness mea

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  • Carbon fiber reinforced polymer (CFRP) machined surface appearance representation method
  • Carbon fiber reinforced polymer (CFRP) machined surface appearance representation method
  • Carbon fiber reinforced polymer (CFRP) machined surface appearance representation method

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] see Figure 1 to Figure 6 , The invention provides a carbon fiber composite material machining surface morphology characterization method, the carbon fiber composite material processing surface morphology characterization. On the basis of the parameters characterizing the surface roughness of the workpiece, the present invention studies the application of wavelet theory in the shape extraction of CFRP (Carbon Fiber Reinforced Polymer) material cutting surface, and establishes the wavelet analysis method to extract the three-dimensional surface shape mathematical model , provide a CFRP machining surface morphology characterization method based on wavelet evaluation criteria, design an evaluation system that can truly reflect the CFRP cutting surface morphology, and at the same time obtain a method for accurately characterizing the cutting...

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Abstract

The invention provides a carbon fiber reinforced polymer (CFRP) machined surface appearance representation method. The method includes the steps that a to-be-represented workpiece is a continuous curve block on a bounded domain, and a surface appearance characteristic function F(x,y) is measured; wavelet component division is carried out on the appearance characteristic function F(x,y) of the three-dimensional surface of the bounded domain, and representation of the surface appearance is further carried out. The method is based on a wavelet assessment reference, machined surface appearance of the CFRP is truly reflected, and meanwhile the machined surface appearance which is precisely represented is obtained by calculating representation parameters. According to a wavelet theory, a multi-fractal spectrum of the machined surface of the CFRP is calculated by means of a wavelet transform method, and multi-fractal parameters are identified to represent characteristics of the machined surface appearance of the CFRP. An appearance representation model is built on the basis of multi-fractal characteristic analysis of the machined surface of the CFRP, the characteristics of the whole machined surface can be described, and local appearance characteristics can be described.

Description

technical field [0001] The invention relates to a method for characterization of the surface morphology of carbon fiber composite material cutting. Background technique [0002] Carbon Fiber Reinforced Polymer (CFRP, Carbon Fiber Reinforced Polymer) is a high-tech new material with excellent mechanical properties. It has the advantages of light weight, high strength, high specific modulus, low thermal expansion coefficient, excellent heat resistance and wear resistance. It is widely used in the fields of aerospace, transportation, sports equipment, civil engineering and other industrial special materials. Compared with the processing mechanism of ordinary metal materials, its material characteristics are anisotropy. Moreover, there are many defects on the surface of CFRP machining, and these defects are not all cut directly by the cutting edge, and the cutting surface will produce many special shapes. [0003] At present, the surface morphology characterization technology ...

Claims

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Application Information

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IPC IPC(8): G01B21/20
Inventor 陈慧群梁东莺
Owner 陈慧群
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