<報文>微小粒子を中心にした単粒子の破壊特性の寸法効果

概要

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The effect of particle size on the breakage properties of a single particle has been investigated by compression tests on spherical and irregular-shaped specimens of five brittle minerals and two coals in a wide size range from 100mm to 1 micrometer. It has been found that the compressive strength of particles as well as the specific fracture energy increase with decreasing particle size. The dependence of the strength or the specific fracture energy on particle size has been found more complicated with those particles which are smaller than 100 micrometers. It has also been found that the brittle particles undergo a partially-plastic deformation when the size ranges from 10 to 30 micrometers, while they are subjected to a fully-plastic deformation when the particle size is below 1 to 5 micrometers.
東北大学の論文
1989-09-30