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Friction losses in valves and fittings for viscoplastic fluids
(Canadian Soc Chemical Engineering, 2005-04-01)
Data on pressure drop were obtained in stainless steel, sanitary fittings and valves during laminar and turbulent flow of aqueous suspensions of sucrose and bentonite. The rheological properties of these suspensions were ...
Friction coefficient and abrasive wear modes in ball-cratering tests conducted at constant normal force and constant pressure-Preliminary results
(ELSEVIER SCIENCE SA, 2009)
The micro-scale abrasive wear test by rotative ball has gained large acceptance in universities and research centers, being widely used in studies on the abrasive wear of materials. Two wear modes are usually observed in ...
The spatial–temporal total friction coefficient of the fault viewed from the perspective of seismo-electromagnetic theory
(Copernicus Gesellschaft MBH, 2020)
Recently, it has been shown theoretically how the lithospheric stress changes could be linked with magnetic anomalies, frequencies, spatial distribution and the magneticmoment magnitude relation using the electrification ...
A study on friction coefficient and wear coefficient of coated systems submitted to micro-scale abrasion tests
(2013)
Several works on friction coefficient during abrasive wear tests are available in the literature, but only a few were dedicated to the friction coefficient in micro-abrasive wear tests conducted with rotating ball. This ...
Coeficientes de perda de carga em valvulas e acessorios no escoamento laminar de fluidos nao-Newtonianos
(2000-01-01)
Friction loss coefficients for laminar flow of xantan gum solutions (concentrations in the range of 0.1-0.5% by weight) through valves and fittings were experimentally determined. The rheological behavior, studied by means ...
Coeficientes de perda de carga em valvulas e acessorios no escoamento laminar de fluidos nao-Newtonianos
(2000-01-01)
Friction loss coefficients for laminar flow of xantan gum solutions (concentrations in the range of 0.1-0.5% by weight) through valves and fittings were experimentally determined. The rheological behavior, studied by means ...
Study of the Influence of the Micro-Abrasive Wear Modes on the Behaviors of the Volume of Wear and Coefficient of Friction of Thin Films Submitted to Micro-Abrasive Wear
(2019-04-13)
The purpose of this work is to study the influence of the micro-abrasive wear modes on the behaviors of the
volume of wear (V) and on the coefficient of friction (µ) of thin films. Experiments were conducted with thin
films ...
Determinação experimental de Coeficientes de Atrito de diferentes partículas para aplicação na modelagem de escoamentos densos
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2022-08-31)
Systems involving particles are very common in many engineering applications. The interaction between these particles and of them with the equipment surfaces can strongly affect their dis-tribution, which will often influence ...
Influence of the normal force, abrasive slurry concentration and abrasive wear modes on the coefficient of friction in ball-cratering wear tests
(2014)
The purpose of this work is to study the influence of the normal force (N), abrasive slurry concentration (C) and abrasive wear modes on the coefficient of friction in ball-cratering wear tests. Experiments were conducted ...