A feasibility study of scattered-light photoelasticity in the determination of the side pressure distribution of the pressed powder bed

A method for the determination of the side pressure distribution of the pressed powder bed by the scattered-light photoelastic technique has been proposed. A cylindrical container made of photoelastic-sensitive material was used as a die, the powder in which was pressed uniaxially. The stress distribution in the wall of the container was measured by the scattered-light photoelastic method. The stress distribution at the inner surface of the container wall was obtained by extrapolation, and the pressure components of the powder bed at the powder—container interface were evaluated from the stress. The existence of a maximum of the side pressure near the surface of the powder bed is suggested.