Measurement of Lubricant Viscosity and Detection of Boundary Slip at High Shear Rates

摘要

Friction between solid and liquid interfaces plays an important role in many mechanical devices such as high speed bearings and liquid-floated gyroscopes. The interfacial friction depends greatly on rheological behaviors of liquids and interactions at high shear rates, which are not well understood fundamentally. There are a lot of demands to fully elucidate the precise nature of the rheological and interfacial performance of liquids at high shear rates despite many seemingly classical theories at low shear rates. Some Newtonian liquids such as ethylene glycol and glycerol were found to exhibit different rheological responses significantly at high shear rates.