Technique of Decomposition of Form Deviation for Freeform Surfaces

Abstract:

This paper presents the technique of decomposition of form deviation based on the use of wavelet filter and Fourier transform. The method allows decomposing the total deviation into systematic, random systematic (waviness) and random components. The method testing was carried out for the statistics of the deviation of the suction side of the turbine engine compressor blade. The accuracy check of the estimates of form deviations generated by the method in a series of simulated surfaces with pre-laid characteristics was carried out. The results showed that the method of decomposition allows one to estimate exactly the components of the form deviation of the simulated surfaces in their series.

• Periodical: Key Engineering Materials (Volume 685)
• Pages: 334-339
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.685.334
• Online since: February 2016
• Authors: Vadim Andreevich Pechenin, Michael Alexandrovich Bolotov, N.V. Ruzanov
• Keywords: Deviation of Form, Fourier Transform, Stochastic Simulation, Wavelet Filter

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