A new test for measurement of the mechanical properties of granular powders is proposed, consisting of upsetting the powder inside a metal tube. The radial pressure is found by correlating measurements of radial bulging of the tube with numerical analysis of tube bulging. Estimates of the error on the determination of the radial pressure are given along with an evaluation of the coefficient of friction for a specific case. New data for the yield surfaces for BSCCO are given and found to be in good agreement with previously published data.
Powder Technology, 2006, Vol 161, Issue 3, p. 220-226