This paper reports measurements of the effective tensile strength (or ‘cavitation threshold’), Fc, of Newtonian silicone oils over a range of shear viscosities, and of a multigrade oil over a range of temperatures, T, in the range 20°C ≤ T ≤ 140°C. These measurements are the first to be obtained for a lubricant under dynamic stressing by tension, over a range of temperatures representative of those encountered under its normal operating conditions. This work introduces a method of estimating Fc from direct measurements of static positive pressures: it thereby eschews the reliance in previous related work upon direct measurements of dynamic negative pressures by transducers designed for use in the range of positive pressures.
Measurements of the Tensile Strength of Oils Under Dynamic Stressing
Sae Technical Papers
SAE Powertrain & Fluid Systems Conference & Exhibition ; 2002
2002-10-21
Conference paper
English
Measurements of the tensile strength of oils under dynamic stressing
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