... fluid leakage in metallic seals. Leakage of water through the interface of the metallic valve and valve seats was measured. The analysis focused on the combined effect of roughness, waviness and form error of metallic seal surfaces on leakage, with a detailed emphasis on the significance of form errors...

...Cheng Xiong; Bo Xu; Zhenqian Chen Purpose This study aims to investigate the rarefaction effects on flow and thermal performances of an equivalent sand-grain roughness model for aerodynamic thrust bearing. Design/methodology/approach In this study, a model of gas lubrication thrust bearing...

...Alireza Khodabandeh; Mohammad Mahdi Abootorabi Purpose First, the effect of magnetic field intensity and nano-ferrofluid concentrations on surface roughness was evaluated in magnetic minimum quantity lubrication (MMQL). Then, the effect of lubricant flow rate and nozzle position on surface...

... 2020 03 01 2021 18 02 2021 21 03 2021 22 03 2021 22 03 2021 © Emerald Publishing Limited 2021 Emerald Publishing Limited Licensed re-use rights only SEM Roughness Microstructure Anti-wear and friction-reducing Dry sliding tests Friction noise...

...Fuying Zhang; Junmei Yang; Haoche Shui; Chengcheng Dong Purpose This paper aims to obtain the film thickness, friction torque and pumping rate and analyze the effects of roughness and surface micro-dimple texture (circular, square and equilateral triangle) on the performance of the oil seal...

...Pentyala Srinivasa Rao; Amit Kumar Rahul Purpose This paper aims to investigate the effect of surface roughness (radial and azimuthal) and viscosity variation on a squeeze film of a conical bearing with a non-Newtonian lubricant by using Rabinowitsch fluid model. Design/methodology/approach...

...Bifeng Yin; Huiqin Zhou; Bo Xu; Hekun Jia Purpose The purpose of this paper is to investigate the coupling mechanism of the roughness distribution characteristic and surface textures on the cylinder liner. Design/methodology/approach The cylinder liner-piston ring lubrication model with non...

... of coefficient of friction (CoF) and wear rate for each matching materials. In addition, the roughness and the morphology of worn surface of different matching materials were quantitatively characterized. Findings The study revealed that material combinations have different friction performances. Test...

...Hui Zhang; Guangneng Dong; Guozhong Dong Purpose The main purpose of this paper is to present the effort on developing a mixed elastohydrodynamic lubrication (EHL) model to study the tribological effect of asperities on rough surface. Design/methodology/approach The model, with the use...

... of the mechanical-assembled multi-layer components to reveal the influence mechanism of every component on friction properties, will provide a new test approach for tribology. Xiaoming Han can be contacted at: hanxm@djtu.edu.cn © Emerald Group Publishing Limited 2016 Wear Friction Roughness...

... Limited 2012 Stainless steel Grinding Metals Temperature Force Roughness Surface grinding Sub‐zero coolant Liquid carbon dioxide Grinding burns Hardness Manufacturers are currently focusing on developing high‐speed and precision grinding operations, which will enable them...

...Osama M. Abuzeid Purpose The purpose of this paper is to construct a continuous time series model to study the thermal creep of rough surfaces in contact. Design/methodology/approach For normal loading, the contact between rough surfaces can often be modeled as the contact of an effective...

...Sudipto Ray; S.K. Roy Chowdhury Purpose The paper's aim is to predict numerically the contact temperatures between two rough sliding bodies and to compare with the experimental results. Design/methodology/approach An elastic contact algorithm is used to analyze the normal contact between two...