COMPARISON OF STRESS-CONCENTRATION VERSUS MINIMUM SOLID AREA BASED MECHANICAL PROPERTY POROSITY RELATIONS

Stress concentrations due to pore shape are questioned as a fundamental determinant of mechanical property-porosity relations, especially elastic property-porosity relations. On the other hand, actual solid load-bearing areas, especially minimum solid areas of porous bodies, clearly are a determinant of mechanical property-porosity effects. The correlation of pore shape-stress concentration effects with elastic properties of ceramics can be explained by the correlation of pore shapes with minimum solid areas.