叶片表面粗糙度测量三维和二维评价比对分析

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中图分类号：TB9 文献标志码：A 文章编号：1674-5124（2025）08-0033-07

Abstract： Aircraft engine blades are a type of irregular and complex curved parts， and the performance of the engine is greatly affected by the surface roughness of the blades. However， the measurement and evaluation standards for blade surface roughness parameters are not yet perfect. Especially in the field of 3D measurement，although the 3D topography measurement technology of the surface has been gradually developed，the corresponding evaluation standards and calibration specifications have not kept up， making it dificult to guide the specific measurement process of blade surface roughness. In order to improve the measurement reliability of blade surface roughness，experimental research has been conducted on the influencing factors of blade surface roughness measurement process， such as blade clamping， light intensity， and evaluation length.A comparative analysis has been conducted on the 3D and 2D evaluation methods of roughnes.It is indicated by the experimental results that the relative fluctuation of the measurement results of the 3D evaluation method is basically within 3% under repeated clamping and changes in illumination， and the measurement results of the 3D evaluation method can reach stability when the length of the data involved in theevaluation reaches twice the sampling length.The 3D evaluation method is less affected by the factors affecting the measurement process compared to 2D methods， resulting in more stable measurement results and higher measurement efficiency.To some extent， the advantages ofthe 3D surface roughness evaluation method have been verified， providing support for the promotion and application of surface roughness 3D measurement equipment and methods in the development of civil aircraft engine blades.

Keywords： aero-engine blade; roughness; 3D measurement

0 引言

零件的工作表面质量对零件工作性能有着至关重要的影响[1]。（剩余10161字）