Author(s)

S.W.J. Brown, R.L. Williams & P.R. Williams

Abstract

The ‘Bullet-Piston’ (B-P) dynamic stressing technique, which involves the reflection of pressure pulses (as tension) at the free surface of a column of liquid, has been used to study the tensile strength, Fc of Newtonian and non-Newtonian fluids. A comparative study of Fc for silicone oils (Newtonian fluids) and aqueous polyacrylamide, PAA, solutions (non-Newtonian) is reported, using an improved B-P apparatus. The B-P apparatus is also analogous to the dynamic loading conditions encountered in a bearing, where a fluid is subjected to pressure and tension over short timescales, and the effect of temperature on F, for a commercial motor oil is reported herein

Keywords