Bi-Gaussian stratified effect of rough surfaces on acoustic emission under a dry sliding friction. (March 2018)

• Record Type: Journal Article
• Authors: Hu, Songtao; Huang, Weifeng; Shi, Xi; Peng, Zhike; Liu, Xiangfeng; Wang, Yuming
• Is Part Of: Tribology international. Volume 119(2018)
• Page Start: 308
• Page End: 315
• Publication Date: 2018-03
• Subjects: Acoustic emission -- Sliding friction -- Surface topography -- Surface simulation; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2017.11.010
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: Bi-Gaussian stratified theory is introduced into the field of acoustic emission (AE). A deterministic AE RMS model under a sliding friction is established referring to the existing Fan's statistical model. The Johnson and the modified Pawlus approaches are performed on real worn surfaces, yielding non-Gaussian and bi-Gaussian reconstructed surfaces. The deterministic model is applied to the above surfaces, finding that the bi-Gaussian stratified characteristic is close to a real sliding friction. The superiority of the modified Pawlus reconstruction approach is revealed. With respect to the improper assumption of Fan's model on the Gaussian distribution, a further investigation on re-establishing a bi-Gaussian statistical AE model under a sliding friction is expected. Highlights: Bi-Gaussian stratified theory is applied to acoustic emission. Bi-Gaussian stratified characteristic of rough surfaces is close to a real sliding friction. Superiority of bi-Gaussian stratified reconstruction method is revealed.