Analytical Model for Guideway Surface Roughness

1976 ◽  
Vol 98 (4) ◽  
pp. 425-431 ◽  
Author(s):  
M. Bala Krishna ◽  
D. A. Hullender
Keyword(s):  
Numerical Simulation ◽  
Surface Roughness ◽  
Spectral Density ◽  
Power Spectral Density ◽  
Analytical Model ◽  
Digital Computer ◽  
Short Wavelength ◽  
Simulation Techniques ◽  
Power Spectral ◽  
Computer Numerical Simulation

An analytical model is presented for calculating the power spectral density of relatively short wavelength guideway irregularities associated with surface roughness. The results are presented in terms of design tolerances which can be interpreted in terms of the familiar California profile index or in terms of measurable deviations from a straight edge. Digital computer numerical simulation techniques are used to verify the model.

Corrected power spectral density of the surface roughness of tire rubber sliding on abrasive material

2021 ◽  
Vol 153 ◽  
pp. 106632
Author(s):  
Hiro Tanaka ◽  
Kenta Okui ◽  
Yuki Oku ◽  
Hironori Takezawa ◽  
Yoji Shibutani
Keyword(s):  
Surface Roughness ◽  
Spectral Density ◽  
Power Spectral Density ◽  
Abrasive Material ◽  
Tire Rubber ◽  
Power Spectral

The Effect of Up-Cutting and Down-Cutting Directions on Materials Swelling in Ultra-Precision Raster Milling

2006 ◽  
Vol 532-533 ◽  
pp. 697-700 ◽  
Author(s):  
Ming Chu Kong ◽  
Wing Bun Lee ◽  
Chi Fai Cheung ◽  
Suet To
Keyword(s):  
Surface Roughness ◽  
Spectral Density ◽  
Power Spectral Density ◽  
Surface Finish ◽  
Copper Alloys ◽  
Cutting Conditions ◽  
Power Spectral ◽  
Ultra Precision ◽  
Important Means ◽  
Cutting Direction

The influence of materials swelling across the steps on surface roughness under up-cutting and down-cutting direction in ultra-precision raster milling was investigated. The normalized extent of swelling is characterized by a swelling significance index, defined based on the power spectral density of the roughness profile. Materials swelling was found to be significant in ultra-precision raster milling, especially when copper alloys machined in the up-cutting direction. The findings in the present study provide an important means for improving the surface finish of the raster-milled surfaces and optimizing the cutting conditions.

Surface roughness and power spectral density study of SHI irradiated ultra-thin gold films

2009 ◽  
Vol 256 (2) ◽  
pp. 558-561 ◽  
Author(s):  
P. Dash ◽  
P. Mallick ◽  
H. Rath ◽  
A. Tripathi ◽  
Jai Prakash ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Spectral Density ◽  
Power Spectral Density ◽  
Gold Films ◽  
Power Spectral ◽  
Density Study

Evaluation of WEDM Surface Quality

2010 ◽  
Vol 97-101 ◽  
pp. 4080-4083 ◽  
Author(s):  
Lei Geng ◽  
Hua Yan Zhong
Keyword(s):  
Surface Roughness ◽  
Fractal Dimension ◽  
Spectral Density ◽  
Surface Topography ◽  
Surface Quality ◽  
Power Spectral Density ◽  
Evaluation Method ◽  
Fractal Theory ◽  
Machined Surface ◽  
Power Spectral

The formation of WEDM surface is a complicated process. There are many factors which make machined surface topography have the characteristics of complex and irregular, and impact using performance of parts. The work investigated microscopic features of the WEDM surface topography based on power spectral density and fractal theory, and proposed power spectral density evaluation method of the WEDM surface. The fractal dimension of the WEDM surface was calculated by structure function method. The physical meaning of the fractal dimension of the WEDM surface was described. The result shows that topography of the WEDM surface exhibits strong fractal characteristics within a certain scale. The processing parameters and pulse power performance will affect the fractal dimension D. The fractal dimension D has a certain relationship with the surface roughness Ra. It is more reasonable to use the fractal dimension D as well as the surface roughness Ra together to evaluate WEDM surface quality.

Comparative study of surface roughness with power spectral density and multifractal spectrum

2007 ◽  
Author(s):  
Shuyi Gan ◽  
Qing Zhou ◽  
Yilin Hong ◽  
Xiangdong Xu ◽  
Ying Liu ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Comparative Study ◽  
Spectral Density ◽  
Power Spectral Density ◽  
Multifractal Spectrum ◽  
Power Spectral
Sign in / Sign up

Export Citation Format

Share Document