Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/75967
Title: Stick-slip dynamics in a Ni62Nb38 metallic glass film during nanoscratching
Authors: Han, DX
Wang, G
Ren, JL
Yu, LP
Yi, J
Hussain, I
Song, SX
Xu, H
Chan, KC 
Liaw, PK
Keywords: Stick-slip dynamics
Metallic glass film
Nanoscratching
Self-similar behavior
Fractal dimension
Issue Date: 2017
Publisher: Pergamon Press
Source: Acta materialia, 2017, v. 136, p. 49-60 How to cite?
Journal: Acta materialia 
Abstract: Stick-slip dynamics during nanoscratching, is investigated for the Ni62Nb38 metallic glass. Detrended fluctuation analysis is introduced to explore the influence of loading force on the temporal scaling and stick-slip behavior. The self-similar characteristics and complexity in the temporal scale of the lateral force signal are investigated. A modified Cauchy class model is used for the stochastic stick-slip process, which connects the fractal dimension and the Hurst exponent and features the positive correlation process. The confidence intervals of the differential friction coefficient at different loading forces elucidate the inhomogeneous (and homogeneous) shear-branching processes during the nanoscratching process.
URI: http://hdl.handle.net/10397/75967
ISSN: 1359-6454
EISSN: 1873-2453
DOI: 10.1016/j.actamat.2017.06.061
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