Abstract
A quasi grain model made of compressed lead balls was applied to determine a correction factor for conversion of an actual grain structure into spherical one. The correction factor is 0.96 to 0.97. A computer simulation method using a statistical interception model was proposed to estimate the spatial sphere distribution from plane circle one. Two hundred sphere samples are required to ensure successful approximation for the actual interception of spheres by the interception model. This computer simulation permits a better result than the Schwartz-Saltykov and Saltykov methods except for the standard deviation in the Schwartz-Saltykov method.
