Abstract
In order to study the strength evaluation method using miniature ceramic specimens, flexural fixtures for these miniature specimens were developed and mechanical strength of alumina ceramics whose size varied from 0.2(thickness)×2(width)×7(length)mm to 3×4×40mm was measured using these fixtures. The average strength of small specimens increased with decreasing specimen size. The dependence of strength on size was approximated using a Weibull size scaling with effective area.