Evaluation method of surface roughness of fiber reinforced composite material

A technology of surface roughness and composite materials, applied in the direction of measuring devices, instruments, etc., can solve the problems of inaccurate, contact probe wear measurement, etc.
CN104089601AInactive Publication Date: 2014-10-08BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
Publication Date
2014-10-08
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to an evaluation method of surface roughness of a fiber reinforced composite material, and belongs to the technical field of material surface integrity evaluation. According to the method, firstly, a non-contact test instrument is selected and used for extracting original data of the machined surface of the material; secondly, the gross error theory is used, and filtering gross errors, namely, manufacturing defects of the material itself are filtered out; at last, analysis software is used for analyzing and processing the filtered-out data to obtain corresponding surface roughness data. Due to the fact that the manufacturing defects of the material itself are filtered out, the three-dimensional roughness data are used as evaluation data, and authentic evaluation on roughness of the machined surface of the material can be achieved.
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Description

technical field

[0001] The invention relates to the technical field of material surface integrity evaluation, in particular to a method for evaluating the surface roughness of fiber-reinforced composite materials. Background technique

[0002] At present, C / C, C / SiC and other materials have gradually become important candidate materials for the key thermal structures of aerospace vehicles due to their good physical and chemical properties. The surface quality of composite material components is an important factor affecting component performance, yield and reliability. At present, in the design, processing and use of composite materials in China, the traditional metal material surface quality testing and evaluation methods are still used, but ordinary metal materials Some conclusions and experience of cutting surface roughness are not applicable to composite materials. This is mainly because the surface roughness evaluation method of metal materials belongs to the two-dimen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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