Method and device for measurement of dynamic viscosity

13th International Conference on Tribology

Ciornei, F.C.^1 ; Alaci, S.^1 ; Amarandei, D.^1 ; Irimescu, L.^1 ; Romanu, I.C.^1 ; Acsinte, L.I.^1

Department of Mechanics and Technologies Stefan Cel Mare, University of Suceava, Universitatii 13, Suceava

720229, Romania^1

关键词: Contact points;    Dynamic viscosities;    Friction torque;    Law of motions;    Liquid lubricants;    Rotation motions;    Spherical surface;    Test rigs;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/174/1/012041/pdf
DOI  :  10.1088/1757-899X/174/1/012041

来源: IOP

【 摘 要 】

The paper proposes a methodology and ensuing test rig for finding the viscosity of a liquid lubricant. The principle consists in obtaining a contact between two spherical surfaces, one concave and the other one convex. One of the surfaces is kept immobile and to the other, a rotation motion is imposed around the common normal in the contact point and then the law of motion for the mobile lens is found. The law of motion allows for estimation of friction torque, dependent on viscosity at its turn. Applying the method for mineral oils, values comparable to the ones presented by the producer were obtained.