Geometry Fractal Characteristics of Milled Surface Profiles
Huang Yi-jian · Journal of Huaqiao University · 2010
The fractal geometry was used to investigate the microtopography of the milled surface.By use of the method of structural function and of rescaled range analysis,the fractal dimension D and vertical scale coefficient G of the different milled surfaces can be obtained.According to the calculation results,the corresponding surface profiles are simulated by using the improved the Weierstrass-Mandelbrot fractal function and the graphs of high degree of normalization probability density distribution of the measured and simulated surface profiles are plotted.The experimental results have shown that the fractal dimension D and vertical scale coefficient G of the milled surface profile decrease with the increase of roughness,the simulated and measured surface profiles have the same high degree of normalization probability density distribution and the former can reflect the fine structure of the surface profiles more really.