Areal autocorrelation and spectral analysis of surface topography
In addition to the statistical and geometric analysis methods, areal autocorrelation functions and spectral analysis techniques are also very important tools for extracting and representing certain features of 3-D surface topography. Since a practically acquired 3-D surface can always be represented by a discrete data matrix, it can be processed with advanced digital signal processing techniques. This can be very helpful for exploring the features that cannot readily be studied by other methods.
KeywordsFast Fourier Transform Autocorrelation Function Electric Discharge Machine Discrete Fourier Transform Engineering Surface
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