Recently B-spline wavelets (ISO 16610-29) have been accepted in precision engineering as an official Technical Specification for analyzing engineering surfaces. However, in some applications where fractal signals are involved it is better that the wavelet behaves like a fractional differentiator. Th
Metrological characteristics of wavelet filter used for engineering surfaces
β Scribed by K. Lingadurai; M.S. Shunmugam
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 817 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0263-2241
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β¦ Synopsis
The functional behavior of manufactured surfaces is influenced by the errors such as roughness, waviness and form errors that are present on the surface. A filtering process is used to establish a three-dimensional reference surface consisting of waviness and form errors and the roughness component is separated with reference to it. The metrological characteristics of a filter are better understood in terms of wavelength content and phase information. In this paper, metrological characteristics of wavelet filter suggested for processing of engineering surfaces are discussed. A few typical manufactured surfaces and their reference surfaces established by wavelet filter are further analyzed by random process techniques to bring out the waviness content and phase matching.
π SIMILAR VOLUMES
Research into techniques for areal surface analysis has recently included wavelet filtering. The requirements for filtering surface analysis include: linear phase shift; finite pulse response and perfect reconstruction -only biorthogonal wavelets satisfy these conditions. The biorthogonal spline wav
A new approach based on the combination of wavelet and fractal theories is proposed. The purpose is to provide a mechanism to evaluate the characteristics of engineering surfaces more accurately and comprehensively. The wavelet transformation models and the fractal representation of engineering surf