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Abstract: In
order to clarify the validity of the method of root mean square
measurement(RMSM) for fractal characterization of surfaces, a set of
surfaces with different roughness are processed by turning, milling,
grinding and rubbing, and their fractal characterizations are performed
with the RMSM method and the structure function measurement(SFM)
method for comparing. The results show that RMSM method has the
characteristics as follows: wider range of scale invariance and better
linearity of fractal characterization curves to make it more accurate;
less dependent on sampling frequency and nonvolatility of fractal
information during fractal calculation to be more objective; and
definite physical meanings and simple fractal characterization to become
easier. The RMSM is a valid method for fractal characterization of
machined surfaces.
Key words:Root
mean square measurement Structure function measurement
Machined surface Fractal characterization
CLC No: TG84
国家自然科学基金(50475164，50225519)和江苏省自然科学基金(BK2002116)资助项目.
Received
20051118, received in revised form 20060418
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