Abstract
Existing ISO segmented and continuous separation methods for differentiating the two components contained within a bi-Gaussian stratified surface were developed based on the fit of the probability material ratio curve. In the present study, because of the significant effect of the plateau component on tribological behavior such as asperity contact, wear and friction, a truncated separation method is proposed based on the truncation of the upper Gaussian component defined by zero skewness. The three separation methods are applied to real worn surfaces. Surface-separation and surface-reconstruction results show that the truncated method accurately captures the upper component identically to the ISO and continuous ones. The identification of the lower component characteristics requires performing a curve fit procedure on the data left after truncation. However, the truncated method fails in identifying the upper component when the material ratio of the transition is less than 9%.
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Acknowledgments
This work was supported by the National Key Basic Research (973) Program of China (No. 2012CB026003), the National Science and Technology Major Project (No. ZX06901), and the National Science and Technology Support Plan Projects (No. 2015BAA08B02).
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Songtao HU. He is a Ph.D. student since 2012 in Department of Mechanical Engineering, Tsinghua University, China. His research interest is mechanical face seals.
Weifeng HUANG. He is currently an associate professor in Department of Mechanical Engineering, Tsinghua University, China. His research interest is mechanical face seals.
Noel BRUNETIERE. He is currently a CRNS researcher in Institut Pprime, France. His research interest is tribology, lubrication and fluid sealing.
Xiangfeng LIU. He is currently a professor and Ph.D. candidate supervisor in Department of Mechanical Engineering, Tsinghua University, China. His research interest is machine design and mechanical face seals.
Yuming WANG. He is currently a professor and a Ph.D. candidate supervisor in Department of Mechanical Engineering, Tsinghua University, China, and an academician of Chinese Academy of Engineering. His research interest is the fluid sealing technology.
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Hu, S., Huang, W., Brunetiere, N. et al. Truncated separation method for characterizing and reconstructing bi-Gaussian stratified surfaces. Friction 5, 32–44 (2017). https://doi.org/10.1007/s40544-016-0129-3
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DOI: https://doi.org/10.1007/s40544-016-0129-3