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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.11 [2004] >
IJEMS Vol.11(1) [February 2004] >
| Title: | Characterization of nanoscale roughness in single point diamond turned optical surfaces using power spectral density analysis |
| Authors: | Khan, Gufran Sayeed
Sarepaka, Rama Gopal V
Chattopadhyay, K D
Jain, P K
Bajpai, R P |
| Issue Date: | Feb-2004 |
| Publisher: | CSIR |
| Abstract: | Power spectral density (PSD)
distribution provides an accurate measure of roughness of an optical surface.
This article presents an analysis of optical surface roughness generated by
single point diamond turning (SPDT) using PSD. For this study, flat 60 mm
diameter aluminium-6061 samples are machined for varying tool feed rates, while
keeping the other machining parameters constant. The 1-D PSD distributions are computed from
the surface roughness data obtained by mechanical profilometer. The PSD
distribution of the surface roughness profile is composed of primarily three
periodic components, which are correlated to the tool feed rate, material
induced vibrations and machine-tool vibrations.
An attempt has been made to identify their individual contributions in
PSD estimates. This study helps in improving the surface quality by selecting
optimum process parameters. |
| Page(s): | 25-30 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.11(1) [February 2004]
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