Modelling Acoustic Emissions induced by dynamic fluid-asperity shearing in hydrodynamic lubrication regime

Jiaojiao Ma; Hao Zhang; Zhanqun Shi; Fulei Chu; Fengshou Gu; Andrew D. Ball

doi:10.1016/j.triboint.2020.106590

Modelling Acoustic Emissions induced by dynamic fluid-asperity shearing in hydrodynamic lubrication regime

Jiaojiao Ma, Hao Zhang, Zhanqun Shi, Fulei Chu, Fengshou Gu, Andrew D. Ball

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

This paper investigates the mechanism and characteristics of Acoustic Emission (AE) generated from the dynamic Fluid-Asperities Shearing (FAS) in the hydrodynamic lubrication (HL) regime. Firstly, a FAS model is derived to take into account the dynamic effect of surface asperities. Then, the influence of surface profiles, lubricants and operating conditions are illustrated on AE characteristics, i.e. magnitudes and frequency bandwidths. It has been found that the correlation length of surface roughness parameters and shear rate are two main factors affecting FAS behaviours and consequently AE characteristics. Finally, the corresponding experiments are carried out based on a rheometer rig, which validate the predictability of the model and new findings, paving the foundation for developing AE based monitoring techniques.

Original language	English
Article number	106590
Number of pages	12
Journal	Tribology International
Volume	153
Early online date	8 Aug 2020
DOIs	https://doi.org/10.1016/j.triboint.2020.106590
Publication status	Published - 1 Jan 2021

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SDG 9 Industry, Innovation, and Infrastructure

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title = "Modelling Acoustic Emissions induced by dynamic fluid-asperity shearing in hydrodynamic lubrication regime",

abstract = "This paper investigates the mechanism and characteristics of Acoustic Emission (AE) generated from the dynamic Fluid-Asperities Shearing (FAS) in the hydrodynamic lubrication (HL) regime. Firstly, a FAS model is derived to take into account the dynamic effect of surface asperities. Then, the influence of surface profiles, lubricants and operating conditions are illustrated on AE characteristics, i.e. magnitudes and frequency bandwidths. It has been found that the correlation length of surface roughness parameters and shear rate are two main factors affecting FAS behaviours and consequently AE characteristics. Finally, the corresponding experiments are carried out based on a rheometer rig, which validate the predictability of the model and new findings, paving the foundation for developing AE based monitoring techniques.",

keywords = "Acoustic emission, Dynamic fluid-asperity shearing, Hydrodynamic lubrication, Surface roughness parameters",

author = "Jiaojiao Ma and Hao Zhang and Zhanqun Shi and Fulei Chu and Fengshou Gu and Ball, \{Andrew D.\}",

note = "Funding Information: This research is supported by the National Natural Science Foundation of China (Grant no. 51705127 , 51875166 ), Hebei Provincial International Science and Technology Cooperation Program of China (Grant no. 17394303D ), Joint Doctoral Training Foundation of HEBUT (Grant no. 2018HW0005 ) and the Tribology Science Fund of the State Key Laboratory of Tribology (Grant no. SKLTKF18A05 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.triboint.2020.106590",

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T1 - Modelling Acoustic Emissions induced by dynamic fluid-asperity shearing in hydrodynamic lubrication regime

AU - Ma, Jiaojiao

AU - Zhang, Hao

AU - Shi, Zhanqun

AU - Chu, Fulei

AU - Gu, Fengshou

AU - Ball, Andrew D.

N1 - Funding Information: This research is supported by the National Natural Science Foundation of China (Grant no. 51705127 , 51875166 ), Hebei Provincial International Science and Technology Cooperation Program of China (Grant no. 17394303D ), Joint Doctoral Training Foundation of HEBUT (Grant no. 2018HW0005 ) and the Tribology Science Fund of the State Key Laboratory of Tribology (Grant no. SKLTKF18A05 ). Publisher Copyright: © 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2021/1/1

Y1 - 2021/1/1

N2 - This paper investigates the mechanism and characteristics of Acoustic Emission (AE) generated from the dynamic Fluid-Asperities Shearing (FAS) in the hydrodynamic lubrication (HL) regime. Firstly, a FAS model is derived to take into account the dynamic effect of surface asperities. Then, the influence of surface profiles, lubricants and operating conditions are illustrated on AE characteristics, i.e. magnitudes and frequency bandwidths. It has been found that the correlation length of surface roughness parameters and shear rate are two main factors affecting FAS behaviours and consequently AE characteristics. Finally, the corresponding experiments are carried out based on a rheometer rig, which validate the predictability of the model and new findings, paving the foundation for developing AE based monitoring techniques.

AB - This paper investigates the mechanism and characteristics of Acoustic Emission (AE) generated from the dynamic Fluid-Asperities Shearing (FAS) in the hydrodynamic lubrication (HL) regime. Firstly, a FAS model is derived to take into account the dynamic effect of surface asperities. Then, the influence of surface profiles, lubricants and operating conditions are illustrated on AE characteristics, i.e. magnitudes and frequency bandwidths. It has been found that the correlation length of surface roughness parameters and shear rate are two main factors affecting FAS behaviours and consequently AE characteristics. Finally, the corresponding experiments are carried out based on a rheometer rig, which validate the predictability of the model and new findings, paving the foundation for developing AE based monitoring techniques.

KW - Acoustic emission

KW - Dynamic fluid-asperity shearing

KW - Hydrodynamic lubrication

KW - Surface roughness parameters

UR - https://www.scopus.com/pages/publications/85089379923

U2 - 10.1016/j.triboint.2020.106590

DO - 10.1016/j.triboint.2020.106590

M3 - Article

AN - SCOPUS:85089379923

SN - 0301-679X

VL - 153

JO - Tribology International

JF - Tribology International

M1 - 106590

ER -

Modelling Acoustic Emissions induced by dynamic fluid-asperity shearing in hydrodynamic lubrication regime

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