Multi-Scale Topography Analysis of Multi-Axis Machined Surfaces Based on Dual-Tree Complex Wavelet Transform
| Autor: | Da Wei Wang, Jun Zhao, Wen Zhen Qin, Weimin Huang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Frequency band Mechanical Engineering Acoustics Multi axis Structural engineering Surface finish Low frequency Condensed Matter Physics Medium frequency Radio spectrum Mechanics of Materials Ball (bearing) General Materials Science Complex wavelet transform business |
| Zdroj: | Materials Science Forum. 874:351-356 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.874.351 |
| Popis: | Multi-axis ball end milling experiments of H13 die steel have been conducted with four different cutter postures, and the 3D topographies of machined surfaces are acquired by optical profiler. The multi-scale analysis is carried out on the machined surfaces based on 2D dual-tree complex wavelet transform (2D DT-CWT). The topographies are decomposed into different frequency bands, and the roughness in every frequency band is calculated. The results reveal that the roughnesses of the machined surfaces under different cutter postures are quite different, the roughness is the lowest when the lead angle is 12° and the tilt angle is-22°. The roughnesses under different cutter postures exhibit similar changing trend with the variation of frequency bands: the roughnesses in the high and low frequency bands are relatively lower, the roughnesses in the medium frequency bands are higher. The 2D DT-CWT provides an ideal comprehensive topography analysis method for performance evaluation of machined surfaces. |
| Databáze: | OpenAIRE |
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